A method and system for cutting argon flower images on the interface of ladle bottom argon blowing slag

Abstract

The embodiment of this specification discloses a method and system for segmenting an argon flower image of the interface of argon-blown slag at the bottom of a ladle, including obtaining an argon flower image of the slag surface of the ladle. Obtaining the outer contour of the tank mouth. Redrawing the outer contour of the tank mouth to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth. According to the argon flower image of the slag surface of the ladle and the minimum circumscribed rectangle information of the outer contour of the tank mouth, the argon flower image of the slag surface is segmented to obtain two segmented argon flower images of the slag surface. Performing argon flower segmentation, splicing the two segmented argon flower contour images correspondingly, and obtaining an argon flower contour splicing image. The argon flower image of the slag surface of the ladle is segmented into upper and lower parts, and the argon flower contours of the segmented images are segmented respectively, so as to realize the separate recognition of the two argon flowers of the argon flower image of the slag surface of the ladle. The argon stirring intensity of two independent argon branches is identified, and the argon flower size feedback is provided by regulation. The outer contour of the tank mouth can be automatically identified, the segmentation plane parameters can be automatically calculated, and the segmentation and splicing of the two argon flower contours can be automatically realized.

Description

Technical Field

[0001] The invention relates to the field of automatic detection and image processing in iron and steel metallurgy, and in particular to an argon flower image cutting method for the interface of argon-blown slag at the bottom of a ladle. Background Art

[0002] The vision-based ladle bottom argon blowing technology has been successfully applied in the molten steel smelting site. The argon flower image on the slag surface of the ladle is collected by a camera, and the size of the argon flower on the slag surface is detected using image recognition technology. Combined with the on-site argon blowing process, the bottom blowing argon flow rate is adjusted in real time according to the detected argon flower size, thereby realizing automatic adjustment of the bottom blowing argon flow rate based on the negative feedback of argon flower detection, thereby improving the bottom blowing argon stirring effect.

[0003] In order to improve the efficiency of argon stirring, most steel mills use double-permeable bricks arranged at a certain angle at the bottom of the ladle. During the argon blowing process of the double-permeable brick ladle, due to the argon blowing process requirements or excessive bottom blowing flow, two argon flowers on the slag surface blend together, which has a certain impact on the subsequent control, as follows:

[0004] 1. During strong stirring, two argon flowers overlap, which affects the segmentation of the argon flower image on the slag surface. Only one large argon flower can be segmented, which cannot meet the requirement of segmenting two independent argon flowers.

[0005] 2. The two air-permeable bricks correspond to two independent argon gas channels. The flow rate of each channel is controlled individually according to the size of each argon flower. However, during strong stirring, only a large argon flower is separated, which makes it difficult to independently control the single-channel argon flow rate. Summary of the invention

[0006] The embodiments of this specification provide a method and system for cutting argon flower images on the interface of argon-blown slag at the bottom of a ladle.

[0007] In a first aspect, the present specification provides a method for cutting an argon flower image on the interface of a ladle bottom argon-blown slag, comprising:

[0008] Obtaining an argon flower image of the ladle slag surface; the argon flower image of the ladle slag surface is an argon flower image of the ladle slag surface including an argon flower image obtained from a slag surface camera video;

[0009] Based on the argon flower image on the slag surface of the ladle, an outer contour of the tank mouth is obtained by image segmentation; the outer contour of the tank mouth is the outer contour of the tank mouth where the molten steel exists;

[0010] The outer contour of the tank mouth is redrawn to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth; the minimum circumscribed rectangle information of the outer contour of the tank mouth includes the pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the length of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the width of the minimum circumscribed rectangle of the outer contour of the tank mouth;

[0011] According to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth, the slag surface argon flower image is segmented to obtain two segmented slag surface argon flower images; the two segmented slag surface argon flower images include a first segmented slag surface argon flower image and a second segmented slag surface argon flower image;

[0012] The two argon flower images of the cut slag surface are subjected to argon flower segmentation to obtain two segmented argon flower contour images; the two segmented argon flower contour images include a first segmented argon flower contour image and a second segmented argon flower contour image;

[0013] The first segmented argon flower contour image and the second segmented argon flower contour image are spliced ​​to obtain an argon flower contour spliced ​​image.

[0014] Optionally, the step of redrawing the outer contour of the can mouth to obtain the minimum circumscribed rectangle information of the outer contour of the can mouth includes:

[0015] Input the pixel points in the outer contour of the tank mouth into the minimum circumscribed matrix algorithm to obtain the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth includes the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the pixel width of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the pixel height of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth include the horizontal coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth and the vertical coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth;

[0016] The minimum circumscribed rectangle is redrawn according to the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth, so as to obtain the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0017] Optionally, the slag surface argon flower image is segmented according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two segmented slag surface argon flower images, including:

[0018] Acquire the slag surface image information; the slag surface image information includes the slag surface image pixel height and the slag surface image pixel width;

[0019] Obtaining the slag surface image distortion coefficient;

[0020] The slag surface image distortion coefficient is specifically obtained by calculating the following formula:

[0021] k s =w0 / h0

[0022] k s represents the distortion coefficient of the slag surface image; w0 represents the pixel width of the minimum circumscribed rectangle of the tank mouth outer contour; h0 represents the pixel height of the minimum circumscribed rectangle of the tank mouth outer contour;

[0023] Based on the slag surface image information and the slag surface image distortion coefficient, a slag surface argon flower image cutting line is obtained;

[0024] A cutting line of the ladle slag surface argon flower image is drawn to cut the ladle slag surface argon flower image to obtain two cut slag surface argon flower images.

[0025] Optionally, obtaining the argon flower image cutting line of the ladle slag surface based on the slag surface image information and the slag surface image distortion coefficient includes:

[0026] The argon flower image cutting line of the ladle slag surface is specifically obtained by the following formula:

[0027] L=y0+int(k s *h0 / 2)

[0028] Among them, the starting coordinates of the tangent line of the ladle slag surface argon flower image are (0,y0+int(k s *h0 / 2); the end point coordinate of the tangent line of the ladle slag surface argon flower image is (w p ,y0+int(k s *h0 / 2);

[0029] Where y0 represents the ordinate of the starting point of the minimum circumscribed rectangle of the outer contour of the tank mouth; k s is the slag surface image distortion coefficient; h0 is the minimum circumscribed rectangle pixel height of the tank mouth outer contour; w p The slag surface image information includes pixel width.

[0030] Optionally, drawing the slag surface argon flower image cutting line of the ladle slag surface, cutting the argon flower image of the ladle slag surface, and obtaining two cut slag surface argon flower images includes:

[0031] The ladle slag surface argon flower image is cut to obtain two cut ladle slag surface argon flower images; the two cut ladle slag surface argon flower images include a first cut ladle slag surface argon flower image and a second cut ladle slag surface argon flower image;

[0032] Among them, the argon flower images of the two cut ladles slag surface are as follows:

[0033]

[0034] Wherein, P is the argon flower image of the slag surface of the ladle; P1 is the argon flower image of the slag surface of the first cut ladle; P2 is the argon flower image of the slag surface of the second cut ladle; k s is the slag surface image distortion coefficient; h0 is the minimum circumscribed rectangle pixel height of the tank mouth outer contour; w p h is the pixel width of the slag surface image; p is the pixel width of the slag surface image; y0 represents the ordinate of the starting point of the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0035] Optionally, the two argon flower images of the cut slag surface are subjected to argon flower segmentation to obtain two corresponding segmented argon flower contour images, including:

[0036] Performing image preprocessing on the first cut ladle slag surface argon sparkle image, using threshold segmentation to extract the argon sparkle contour of the first cut ladle slag surface argon sparkle image, and obtaining the first cut ladle slag surface argon sparkle image;

[0037] The second cut ladle slag surface argon scar image is subjected to image preprocessing, and the argon scar contour of the second cut ladle slag surface argon scar image is obtained by using threshold segmentation to obtain the second cut ladle slag surface argon scar image.

[0038] Optionally, the first segmented argon flower contour image and the second segmented argon flower contour image are spliced ​​together.

[0039] Get the Argon Flower outline stitching image, including:

[0040] The first segmented argon flower contour image and the second segmented argon flower contour image are vertically spliced ​​to obtain an argon flower contour spliced ​​image.

[0041] In a second aspect, the present specification provides a ladle bottom argon blowing slag interface argon flower image cutting system, comprising:

[0042] An image acquisition module is used to obtain an argon flower image on the slag surface of a ladle; the argon flower image on the slag surface of the ladle is an argon flower image on the slag surface of the ladle including an argon flower image obtained from a slag surface camera video;

[0043] A contour extraction module, based on the ladle slag surface argon flower image, obtains the outer contour of the tank mouth through image segmentation; the outer contour of the tank mouth is the outer contour of the tank mouth where the molten steel exists;

[0044] The minimum circumscribed matrix drawing module redraws the outer contour of the tank mouth to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth; the minimum circumscribed rectangle information of the outer contour of the tank mouth includes the pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the length of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the width of the minimum circumscribed rectangle of the outer contour of the tank mouth;

[0045] A cutting module, according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the tank mouth, cuts the slag surface argon flower image to obtain two cut slag surface argon flower images; the two cut slag surface argon flower images include a first cut slag surface argon flower image and a second cut slag surface argon flower image;

[0046] The argon flower segmentation module performs argon flower segmentation on the two argon flower images of the cut slag surface, and correspondingly obtains two segmented argon flower contour images; the two segmented argon flower contour images include a first segmented argon flower contour image and a second segmented argon flower contour image;

[0047] The splicing module splices the first segmented argon flower contour image and the second segmented argon flower contour image to obtain an argon flower contour splicing image.

[0048] Optionally, the step of redrawing the outer contour of the can mouth to obtain the minimum circumscribed rectangle information of the outer contour of the can mouth includes:

[0049] Input the pixel points in the outer contour of the tank mouth into the minimum circumscribed matrix algorithm to obtain the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth includes the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the pixel width of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the pixel height of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth include the horizontal coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth and the vertical coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth;

[0050] The minimum circumscribed rectangle is redrawn according to the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth, so as to obtain the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0051] Optionally, the slag surface argon flower image is segmented according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two segmented slag surface argon flower images, including:

[0052] Acquire the slag surface image information; the slag surface image information includes the slag surface image pixel height and the slag surface image pixel width;

[0053] Obtaining the slag surface image distortion coefficient;

[0054] The slag surface image distortion coefficient is specifically obtained by calculating the following formula:

[0055] k s =w0 / h0;

[0056] k s represents the distortion coefficient of the slag surface image; w0 represents the pixel width of the minimum circumscribed rectangle of the tank mouth outer contour; h0 represents the pixel height of the minimum circumscribed rectangle of the tank mouth outer contour;

[0057] Based on the slag surface image information and the slag surface image distortion coefficient, a slag surface argon flower image cutting line is obtained;

[0058] A cutting line of the ladle slag surface argon flower image is drawn to cut the ladle slag surface argon flower image to obtain two cut slag surface argon flower images.

[0059] The beneficial effects of the embodiments of this specification are as follows:

[0060] The embodiments of this specification provide a scheme to obtain a ladle slag surface argon flower image. The ladle slag surface argon flower image is a ladle slag surface argon flower image obtained from a slag surface camera video and containing an argon flower image. Based on the ladle slag surface argon flower image, the outer contour of the tank mouth is obtained by image segmentation. The outer contour of the tank mouth is the outer contour of the tank mouth where molten steel exists. The outer contour of the tank mouth is redrawn to obtain the minimum circumscribed rectangle information of the tank mouth outer contour. The minimum circumscribed rectangle information of the tank mouth outer contour includes the pixel coordinates of the minimum circumscribed rectangle of the tank mouth outer contour, the length of the minimum circumscribed rectangle of the tank mouth outer contour, and the width of the minimum circumscribed rectangle of the tank mouth outer contour. According to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the tank mouth outer contour, the slag surface argon flower image is segmented to obtain two segmented slag surface argon flower images. The two segmented slag surface argon flower images include a first segmented slag surface argon flower image and a second segmented slag surface argon flower image. The two segmented slag surface argon flower images are segmented to obtain two segmented argon flower contour images. The two segmented argon flower contour images include a first segmented argon flower contour image and a second segmented argon flower contour image. The first segmented argon flower contour image and the second segmented argon flower contour image are spliced ​​to obtain an argon flower contour spliced ​​image.

[0061] The present invention divides the argon flower image of the ladle slag surface into two parts, the upper and lower parts, and the argon flower contours of the divided images are respectively segmented, so as to realize the separate recognition of two argon flowers of the argon flower image of the ladle slag surface. It can meet the recognition of the argon stirring intensity of the two independent argon branches of the ladle bottom blowing argon, and provide argon flower size feedback for the argon gas regulation of the two independent argon branches. It can automatically identify the outer contour of the tank mouth, automatically calculate the cutting plane parameters, and automatically realize the segmentation and splicing of the two argon flower contours. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present specification. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0063] Figure 1 A flow chart of a method for cutting argon flower images on the interface of argon-blown slag at the bottom of a ladle provided in an embodiment of this specification.

[0064] Figure 2 A planar schematic diagram of an argon flower image on the slag surface of a ladle in an argon flower image cutting system for the interface of argon flower on slag blown from the bottom of a ladle provided by an embodiment of the present invention.

[0065] Figure 3 An original image of the argon flower image on the slag surface of a ladle in an argon flower image cutting system for the interface of argon flower on the slag of a ladle bottom blowing provided by an embodiment of the present invention.

[0066] Figure 4 An embodiment of the present invention provides a ladle outer contour segmentation diagram in a ladle bottom argon blowing slag interface argon flower image cutting system.

[0067] Figure 5 An image after cutting of the argon flower image on the slag surface of a ladle in an argon flower image cutting system for the interface of argon flower on slag blown from the bottom of a ladle provided by an embodiment of the present invention.

[0068] Figure 6 An image after segmentation of the argon flower image on the slag surface of a ladle in an argon flower image segmentation system for the interface of argon flower on slag blown from the bottom of a ladle provided by an embodiment of the present invention.

[0069] Figure 7 An embodiment of the present invention provides an argon flower contour splicing image in an argon flower image cutting system for the interface of argon flower on a ladle bottom blowing argon slag.

[0070] Figure 8 It is a schematic diagram of a block structure of an electronic device provided by an embodiment of the present invention.

[0071] Labels in the figure: bus 500; receiver 501; processor 502; transmitter 503; memory 504; bus interface 505. DETAILED DESCRIPTION

[0072] In order to better understand the above technical scheme, the technical scheme of the embodiments of this specification is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of this specification, rather than limitations on the technical scheme of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0073] like Figure 1 As shown, it is a flow chart of a method for cutting argon flower images on the interface of ladle bottom argon blowing slag provided in an embodiment of this specification, and the method comprises the following steps:

[0074] Step S101: obtaining an argon flower image of a ladle slag surface. The argon flower image of a ladle slag surface is an argon flower image of a ladle slag surface including an argon flower image obtained from a slag surface camera video.

[0075] The position of the ladle slag surface camera is fixed, so the position of the ladle slag surface photographed is fixed. Figure 3 The schematic diagram of the argon flower image on the ladle slag surface is shown in Figure 2 shown.

[0076] Step S102: Based on the ladle slag surface argon flower image, the outer contour of the ladle mouth is obtained by image segmentation. The outer contour of the ladle mouth is the outer contour of the ladle mouth where the molten steel exists.

[0077] Among them, by obtaining the grayscale image of the argon flower on the slag surface of the ladle, the gradient of the pixel point and the gradient threshold are judged, and the pixel points greater than the gradient threshold are segmented to obtain the outer contour of the tank mouth. Figure 4 shown.

[0078] Step S103: redrawing the outer contour of the tank mouth to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth; the minimum circumscribed rectangle information of the outer contour of the tank mouth includes the pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the length of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the width of the minimum circumscribed rectangle of the outer contour of the tank mouth;

[0079] Among them, since the position of the camera on the slag surface of the ladle and the shape of the tank mouth are fixed, the minimum circumscribed rectangle of the outer contour of the tank mouth is a rectangle parallel to the argon flower image on the slag surface of the ladle.

[0080] The pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth are the values ​​of the lower left corner in the matrix, that is, the coordinates of the pixel point with the smallest horizontal and vertical coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0081] Step S104: Slice the slag surface argon flower image according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two sliced ​​slag surface argon flower images. The two sliced ​​slag surface argon flower images include a first sliced ​​slag surface argon flower image and a second sliced ​​slag surface argon flower image;

[0082] Step S105: Segment the two cutting slag surface argon flower images to obtain two corresponding segmented argon flower contour images; the two segmented argon flower contour images include a first segmented argon flower contour image and a second segmented argon flower contour image.

[0083] Step S106: stitching the first segmented argon flower contour image and the second segmented argon flower contour image to obtain an argon flower contour stitching image.

[0084] Optionally, redrawing the outer contour of the tank mouth to draw the minimum circumscribed rectangle of the outer contour of the tank mouth includes:

[0085] The pixel points in the outer contour of the tank mouth are input into the minimum circumscribed matrix algorithm to obtain the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth includes the pixel coordinates (x0, y0) of the initial starting point of the minimum circumscribed rectangle of the outer contour of the tank mouth, the pixel width w0 of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the pixel height h0 of the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0086] Among them, the minimum external matrix algorithm can use the minAreaRect function in opencv to obtain the center point and width and height of the external matrix, and then subtract half of the width pixel value from the horizontal coordinate pixel position of the center point, and subtract half of the height pixel value from the vertical coordinate pixel position of the center point to obtain the starting point position.

[0087] Among them, the initial starting point pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth (x0, y0), the pixel width w0 of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the pixel height h of the minimum circumscribed rectangle of the outer contour of the tank mouth 0。

[0088] The minimum circumscribed rectangle is redrawn according to the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth, so as to obtain the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0089] Through the above method, the initial starting point pixel coordinates and width and height of the minimum circumscribed rectangle of the outer contour of the can mouth are obtained, so that the argon flower image can be cut more accurately in the subsequent cutting work.

[0090] Optionally, the slag surface argon flower image is segmented according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two segmented slag surface argon flower images, including:

[0091] Acquire the slag surface image information; the slag surface image information includes the slag surface image pixel height and the slag surface image pixel width;

[0092] Obtaining the slag surface image distortion coefficient;

[0093] The slag surface image distortion coefficient is specifically obtained by calculating the following formula:

[0094] k s =w0 / h0;

[0095] The k s represents the distortion coefficient of the slag surface image; w0 represents the pixel width of the minimum circumscribed rectangle of the outer contour of the tank mouth; h0 represents the pixel height of the minimum circumscribed rectangle of the outer contour of the tank mouth;

[0096] Based on the slag surface image information and the slag surface image distortion coefficient, a slag surface argon flower image cutting line is obtained;

[0097] A cutting line of the ladle slag surface argon flower image is drawn to cut the ladle slag surface argon flower image to obtain two cut slag surface argon flower images.

[0098] Among them, the image of the argon flower on the slag surface of the ladle is cut into the image after cutting. Figure 5 shown.

[0099] Through the above method, the lens distortion is removed. Since the double air-permeable bricks are symmetrically distributed up and down on the bottom of the ladle, the argon flower image on the slag surface of the ladle is cut into two separate argon flower images up and down. The argon blowing effect is judged separately, which can better control the argon flow rate of each channel.

[0100] Optionally, the slag surface argon flower image segmentation is performed according to the slag surface image parameters and in combination with the pixel coordinates and length and width of the minimum circumscribed rectangle of the outer contour of the tank mouth, including:

[0101] The argon flower image cutting line of the ladle slag surface is specifically obtained by the following formula:

[0102] L=y0+int(k s *h0 / 2)

[0103] Among them, the starting coordinates of the tangent line of the ladle slag surface argon flower image are (0,y0+int(k s *h0 / 2). The coordinates of the end point of the tangent line of the argon flower image on the ladle slag surface are (w p ,y0+int(k s *h0 / 2).

[0104] Wherein, y0 represents the ordinate of the starting point of the minimum circumscribed rectangle of the outer contour of the tank mouth. s is the distortion coefficient of the slag surface image. h0 is the pixel height of the minimum circumscribed rectangle of the tank mouth outer contour; w p The slag surface image information includes pixel width.

[0105] Through the above method, since the double-permeable bricks are symmetrically distributed up and down on the bottom of the ladle, they are cut at the center line after removing the lens distortion, that is, the center line of the original tank mouth, so that they can be divided into two average areas. Each area can judge the argon blowing effect as independently as possible, and the argon flow rate of each channel can be better controlled.

[0106] Optionally, drawing a cutting line of the ladle slag surface argon flower image, cutting the ladle slag surface argon flower image, and obtaining two cut slag surface argon flower images, including:

[0107] The ladle slag surface argon flower image is cut to obtain two cut ladle slag surface argon flower images. The two cut ladle slag surface argon flower images include a first cut ladle slag surface argon flower image and a second cut ladle slag surface argon flower image.

[0108] Among them, the argon flower images of the two cut ladles slag surface are as follows:

[0109]

[0110] Wherein, P is the argon flower image of the slag surface of the ladle; P1 is the argon flower image of the first cut slag surface of the ladle; P2 is the argon flower image of the second cut slag surface of the ladle; k s is the slag surface image distortion coefficient; h0 is the minimum circumscribed rectangle pixel height of the tank mouth outer contour; w p is the pixel width of the slag surface image; p is the pixel width of the slag surface image; y0 represents the ordinate of the starting point of the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0111] Among them, in this embodiment, after the ladle slag surface argon flower image is segmented, a ladle slag surface argon flower image segmentation parameter table is obtained, indicating the pixel coordinates of each value in the image ladle slag surface argon flower image, as shown in Table 1.

[0112] Table 1 Example 1 Ladle slag surface argon flower image cutting parameter table

[0113] parameter Value (pixels) parameter Value (pixels) <![CDATA[(w p ,h p )]]> (2048,1536) <![CDATA[(w0,h0)]]> (919,680) <![CDATA[(x0,y0)]]> (157,742) <![CDATA[k s ]]> 1.35 <![CDATA[P1]]> [0:1201,0:2048) <![CDATA[P2]]> [1202:1536,0:2048)

[0114] By the above method, the ladle slag surface argon flower image is cut according to the ladle slag surface argon flower image cutting line, and the pixel values ​​of the cut area are divided to obtain two cut ladle slag surface argon flower images after cutting. Each area can judge its own argon blowing effect separately, and the argon flow rate of each area can be better controlled.

[0115] Optionally, the two argon flower images of the cut slag surface are subjected to argon flower segmentation to obtain two corresponding segmented argon flower contour images, including:

[0116] The first cut ladle slag surface argon sparkle image is subjected to image preprocessing, and the argon sparkle contour of the first cut ladle slag surface argon sparkle image is extracted by using threshold segmentation to obtain the first cut ladle slag surface argon sparkle image.

[0117] Among them, image preprocessing includes grayscale operations. By obtaining the grayscale image of the argon flower on the slag surface of the ladle, the gradient of the pixel point and the size of the gradient threshold are judged, and the pixel points greater than the gradient threshold are segmented to obtain the outer contour of the tank mouth.

[0118] The first segmented ladle slag surface argon flower image obtained is a binary image in which the inside of the outline is white and the outside of the outline is black.

[0119] The second segmented ladle slag surface argon sparkle image is subjected to image preprocessing, and the argon sparkle contour of the second segmented ladle slag surface argon sparkle image is obtained by using threshold segmentation.

[0120] The segmentation method used in the second segmentation of the ladle slag surface argon flower image is the same as the segmentation method used in the first segmentation image.

[0121] The image after segmentation of the ladle slag surface argon flower image is as follows: Figure 6 shown.

[0122] Through the above method, the corresponding contours of the segmented images are extracted. By extracting the contours separately, the segmented argon flower contours can be better obtained, and the argon flower images within the contours can be extracted and processed, thereby more accurately segmenting the argon flowers in the two images.

[0123] Optionally, the step of splicing the first segmented argon flower contour image and the second segmented argon flower contour image to obtain a spliced ​​argon flower contour image includes:

[0124] The first segmented argon flower contour image and the second segmented argon flower contour image are vertically spliced ​​to obtain an argon flower contour spliced ​​image.

[0125] Among them, the argon flower contour stitching image, such as Figure 7 shown.

[0126] By the above method, the segmented images are spliced ​​to obtain an image of the same size as the original image. The image of the argon flower is obtained separately, so that the image can realize the independent detection of the upper and lower argon flowers on the slag surface of the ladle, and the spliced ​​image can be better observed with the original image.

[0127] Through the above method, in order to overcome the influence of the overlap of two argon flowers on the argon flow control caused by a large argon blowing flow rate, a method for cutting the argon flower image of the argon flower interface of the ladle bottom argon blowing slag is provided. Based on the argon flower position, the slag surface image is cut into two parts, the argon flower contour of each part is extracted respectively, and the upper and lower argon flowers of the argon flower image of the ladle slag surface are independently detected.

[0128] Based on the same inventive concept, the embodiment of this specification provides a ladle bottom argon blowing slag interface argon flower image cutting system, the system comprising:

[0129] The image acquisition module obtains the argon flower image of the ladle slag surface; the argon flower image of the ladle slag surface is the argon flower image of the ladle slag surface including the argon flower image obtained from the slag surface camera video.

[0130] The contour extraction module obtains the outer contour of the tank mouth through image segmentation based on the argon flower image on the slag surface of the ladle; the outer contour of the tank mouth is the outer contour of the tank mouth where the molten steel exists.

[0131] The minimum circumscribed matrix drawing module redraws the outer contour of the tank mouth to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth; the minimum circumscribed rectangle information of the outer contour of the tank mouth includes the pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the length of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the width of the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0132] The cutting module cuts the slag surface argon flower image according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two cut slag surface argon flower images. The two cut slag surface argon flower images include a first cut slag surface argon flower image and a second cut slag surface argon flower image.

[0133] The segmentation module performs segmentation on the two slag surface images to obtain two segmented contour images. The two segmented contour images include a first segmented contour image and a second segmented contour image.

[0134] The splicing module splices the first segmented argon flower contour image and the second segmented argon flower contour image to obtain an argon flower contour splicing image.

[0135] Optionally, the step of redrawing the outer contour of the can mouth to obtain the minimum circumscribed rectangle information of the outer contour of the can mouth includes:

[0136] Input the pixel points in the outer contour of the tank mouth into the minimum circumscribed matrix algorithm to obtain the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth. The initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth includes the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the pixel width of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the pixel height of the minimum circumscribed rectangle of the outer contour of the tank mouth. The initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth include the horizontal coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth and the vertical coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0137] The minimum circumscribed rectangle is redrawn according to the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth, so as to obtain the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0138] Optionally, the slag surface argon flower image is segmented according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two segmented slag surface argon flower images, including:

[0139] The slag surface image information is obtained. The slag surface image information includes the slag surface image pixel height and the slag surface image pixel width.

[0140] Obtain the slag surface image distortion coefficient.

[0141] The slag surface image distortion coefficient is specifically obtained by calculating the following formula:

[0142] k s =w0 / h0

[0143] k s represents the distortion coefficient of the slag surface image; w0 represents the pixel width of the minimum circumscribed rectangle of the outer contour of the tank mouth; h0 represents the pixel height of the minimum circumscribed rectangle of the outer contour of the tank mouth.

[0144] Based on the slag surface image information and the slag surface image distortion coefficient, the argon flower image cutting line of the ladle slag surface is obtained.

[0145] A cutting line of the ladle slag surface argon flower image is drawn to cut the ladle slag surface argon flower image to obtain two cut slag surface argon flower images.

[0146] Regarding the system in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0147] The embodiment of the present invention further provides an electronic device, such as Figure 8 As shown, it includes a memory 504, a processor 502, and a computer program stored in the memory 504 and executable on the processor 502. When the processor 502 executes the program, the steps of any method of the argon flower image cutting method for the interface of argon flower at the bottom of the ladle and slag is implemented.

[0148] Among them, Figure 8 In the embodiment of the present invention, a bus architecture (represented by bus 500) is shown, which may include any number of interconnected buses and bridges, and bus 500 links various circuits including one or more processors represented by processor 502 and memory represented by memory 504. Bus 500 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 505 provides an interface between bus 500 and receiver 501 and transmitter 503. Receiver 501 and transmitter 503 may be the same element, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 502 is responsible for managing bus 500 and general processing, while memory 504 may be used to store data used by processor 502 when performing operations.

[0149] An embodiment of the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the above-mentioned methods for cutting the argon flower image at the interface of argon-blown slag at the bottom of the ladle and the data involved above.

[0150] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing such systems. In addition, the present invention is not directed to any specific programming language either. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the description of the above specific languages ​​is for disclosing the best mode of the present invention.

[0151] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0152] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0153] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0154] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims below, any one of the claimed embodiments may be used in any combination.

[0155] The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the apparatus according to an embodiment of the present invention. The present invention may also be implemented as a device or device program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention may be stored on a computer-readable medium, or may have the form of one or more signals. Such a signal may be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0156] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

Claims

1. A method for cutting argon flower images on the interface of ladle bottom argon blowing slag, characterized in that: include: Obtaining an argon flower image of the ladle slag surface; the argon flower image of the ladle slag surface is an argon flower image of the ladle slag surface including an argon flower image obtained from a slag surface camera video; Based on the argon flower image on the slag surface of the ladle, an outer contour of the tank mouth is obtained by image segmentation; the outer contour of the tank mouth is the outer contour of the tank mouth where the molten steel exists; The outer contour of the tank mouth is redrawn to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth; the minimum circumscribed rectangle information of the outer contour of the tank mouth includes the pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the length of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the width of the minimum circumscribed rectangle of the outer contour of the tank mouth; According to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth, the slag surface argon flower image is segmented to obtain two segmented slag surface argon flower images; the two segmented slag surface argon flower images include a first segmented slag surface argon flower image and a second segmented slag surface argon flower image; The two argon flower images of the cut slag surface are subjected to argon flower segmentation to obtain two segmented argon flower contour images; the two segmented argon flower contour images include a first segmented argon flower contour image and a second segmented argon flower contour image; The first segmented argon flower contour image and the second segmented argon flower contour image are spliced ​​to obtain an argon flower contour spliced ​​image.

2. The method according to claim 1, characterized in that The step of redrawing the outer contour of the tank mouth to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth includes: Input the pixel points in the outer contour of the tank mouth into the minimum circumscribed matrix algorithm to obtain the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth includes the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the pixel width of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the pixel height of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth include the horizontal coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth and the vertical coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth; The minimum circumscribed rectangle is redrawn according to the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth, so as to obtain the minimum circumscribed rectangle of the outer contour of the tank mouth.

3. The method according to claim 1, characterized in that The slag surface argon flower image is segmented according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two segmented slag surface argon flower images, including: Acquire slag surface image information; the slag surface image information includes slag surface image pixel height and slag surface image pixel width; Obtaining the slag surface image distortion coefficient; The slag surface image distortion coefficient is specifically obtained by calculating the following formula: k s =w0 / h0 k s represents the distortion coefficient of the slag surface image; w0 represents the pixel width of the minimum circumscribed rectangle of the tank mouth outer contour; h0 represents the pixel height of the minimum circumscribed rectangle of the tank mouth outer contour; Based on the slag surface image information and the slag surface image distortion coefficient, a slag surface argon flower image cutting line is obtained; A cutting line of the ladle slag surface argon flower image is drawn to cut the ladle slag surface argon flower image to obtain two cut slag surface argon flower images.

4. The method according to claim 3, characterized in that The step of obtaining the argon flower image cutting line of the ladle slag surface based on the slag surface image information and the slag surface image distortion coefficient comprises: The argon flower image cutting line of the ladle slag surface is specifically obtained by the following formula: L=y0+int(k s *h0 / 2) Among them, the starting coordinates of the tangent line of the ladle slag surface argon flower image are (0,y0+int(k s *h0 / 2); the end point coordinate of the tangent line of the ladle slag surface argon flower image is (w p ,y0+int(k s *h0 / 2); Where y0 represents the ordinate of the starting point of the minimum circumscribed rectangle of the outer contour of the tank mouth; k s is the slag surface image distortion coefficient; h0 is the minimum circumscribed rectangle pixel height of the tank mouth outer contour; w p The slag surface image information includes pixel width.

5. The method according to claim 3, characterized in that The step of drawing a cutting line of the ladle slag surface argon flower image and cutting the ladle slag surface argon flower image to obtain two cut slag surface argon flower images includes: The ladle slag surface argon flower image is cut to obtain two cut ladle slag surface argon flower images; the two cut ladle slag surface argon flower images include a first cut ladle slag surface argon flower image and a second cut ladle slag surface argon flower image; Among them, the argon flower images of the two cut ladles slag surface are as follows: Wherein, P is the argon flower image of the slag surface of the ladle; P1 is the argon flower image of the slag surface of the first cut ladle; P2 is the argon flower image of the slag surface of the second cut ladle; k s is the slag surface image distortion coefficient; h0 is the minimum circumscribed rectangle pixel height of the tank mouth outer contour; w p h is the pixel width of the slag surface image; p is the pixel width of the slag surface image; y0 represents the ordinate of the starting point of the minimum circumscribed rectangle of the outer contour of the tank mouth.

6. The method according to claim 1, characterized in that The two argon flower images of the cut slag surface are subjected to argon flower segmentation to obtain two segmented argon flower contour images, including: Performing image preprocessing on the first cut ladle slag surface argon flower image, using threshold segmentation to extract the argon flower contour of the first cut ladle slag surface argon flower image, and obtaining the first cut ladle slag surface argon flower image; The image preprocessing is performed on the second cut ladle slag surface argon flower image, and the threshold value segmentation is adopted to obtain the argon flower contour of the second cut ladle slag surface argon flower image to obtain the second cut ladle slag surface argon flower image.

7. The method according to claim 1, characterized in that The step of splicing the first segmented argon flower contour image and the second segmented argon flower contour image to obtain a spliced ​​argon flower contour image comprises: The first segmented argon flower contour image and the second segmented argon flower contour image are vertically spliced ​​to obtain an argon flower contour spliced ​​image.

8. A ladle bottom argon blowing slag interface argon flower image cutting system, characterized in that: include: An image acquisition module is used to obtain an argon flower image on the slag surface of a ladle; the argon flower image on the slag surface of the ladle is an argon flower image on the slag surface of the ladle including an argon flower image obtained from a slag surface camera video; A contour extraction module, based on the ladle slag surface argon flower image, obtains the outer contour of the tank mouth through image segmentation; the outer contour of the tank mouth is the outer contour of the tank mouth where the molten steel exists; The minimum circumscribed matrix drawing module redraws the outer contour of the tank mouth to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth; the minimum circumscribed rectangle information of the outer contour of the tank mouth includes the pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the length of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the width of the minimum circumscribed rectangle of the outer contour of the tank mouth; A cutting module, according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the tank mouth, cuts the slag surface argon flower image to obtain two cut slag surface argon flower images; the two cut slag surface argon flower images include a first cut slag surface argon flower image and a second cut slag surface argon flower image; The argon flower segmentation module performs argon flower segmentation on the two argon flower images of the cut slag surface, and correspondingly obtains two segmented argon flower contour images; the two segmented argon flower contour images include a first segmented argon flower contour image and a second segmented argon flower contour image; The splicing module splices the first segmented argon flower contour image and the second segmented argon flower contour image to obtain an argon flower contour splicing image.

9. The system according to claim 8, characterized in that The step of redrawing the outer contour of the tank mouth to obtain the minimum circumscribed rectangle information of the outer contour of the tank mouth includes: Input the pixel points in the outer contour of the tank mouth into the minimum circumscribed matrix algorithm to obtain the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth includes the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth, the pixel width of the minimum circumscribed rectangle of the outer contour of the tank mouth, and the pixel height of the minimum circumscribed rectangle of the outer contour of the tank mouth; the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth include the horizontal coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth and the vertical coordinates of the initial starting pixel coordinates of the minimum circumscribed rectangle of the outer contour of the tank mouth; The minimum circumscribed rectangle is redrawn according to the initial information of the minimum circumscribed rectangle of the outer contour of the tank mouth, so as to obtain the minimum circumscribed rectangle of the outer contour of the tank mouth.

10. The system according to claim 8, characterized in that The slag surface argon flower image is segmented according to the ladle slag surface argon flower image and the minimum circumscribed rectangle information of the outer contour of the ladle mouth to obtain two segmented slag surface argon flower images, including: Acquire slag surface image information; the slag surface image information includes slag surface image pixel height and slag surface image pixel width; Obtaining the slag surface image distortion coefficient; The slag surface image distortion coefficient is specifically obtained by calculating the following formula: k s =w0 / h0; k s represents the distortion coefficient of the slag surface image; w0 represents the pixel width of the minimum circumscribed rectangle of the tank mouth outer contour; h0 represents the pixel height of the minimum circumscribed rectangle of the tank mouth outer contour; Based on the slag surface image information and the slag surface image distortion coefficient, a slag surface argon flower image cutting line is obtained; A cutting line of the ladle slag surface argon flower image is drawn to cut the ladle slag surface argon flower image to obtain two cut slag surface argon flower images.

Images