Belt conveyor material volume measuring method and device, and storage medium
A technology of volume measurement and belt conveying, which is used in measurement devices, optical devices, image data processing, etc., can solve the problems of unconsidered occlusion between materials, reduced measurement accuracy, and less cross-sectional contours, so as to solve the occlusion between materials. and the effect of too large sampling spacing
Pending Publication Date: 2021-04-06
DALIAN MARITIME UNIVERSITY
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[0003] In the actual application of the above method, since the occlusion problem between materials is not considered, the laser contour points on the surface of the material captured by the camera will be incomplete when there is occlusion in the front and rear of the material, and the point deviation in the world coordinate system mapped to the line laser plane will be incomplete. few
In addition, when the moving speed of the belt conveyor is too fast or the frame rate of the camera is not high, the sampling interval is too large, the real cross-sectional profile is too small, and the measurement accuracy is reduced
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[0034] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0035] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...
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The invention provides a belt conveyor material volume measuring method and device, and a storage medium. The method comprises the following steps: S1, extracting images of the same position of a conveyor through a main camera and an auxiliary camera at different shooting angles; S2, de-noising the first image and the second image to obtain a first de-noised image and a second de-noised image; S3, separating the double laser lines and extracting central area pixel points of the laser lines; S4, mapping the laser contour points into a world coordinate system for contour point fusion; and S5, calculating the material volume according to the coordinates of the contour points and the speed information of the conveyor belt. According to the invention, two cameras with different angles are utilized to capture deformed laser strips and separate the laser strips, contour points in an image coordinate system are mapped into a world coordinate system in combination with calibration parameters, two sectional areas of a frame of material are calculated, the volume of the frame of material can be calculated in combination with speed information, and the volume of the material conveyed within a certain period of time can be measured in a non-contact manner by accumulating the materials passing through for a period of time.
Description
technical field [0001] The present invention relates to the technical field of image detection, in particular, to a method, device and storage medium for measuring the volume of a belt conveyor material. Background technique [0002] Existing material volume recognition methods based on image detection are generally implemented based on the following technologies: 1. Homography mapping: place the checkerboard at the line laser plane, and establish a homography mapping relationship between the image plane and the line laser plane. 2. Contour point extraction: extract the center of the light strip from the laser contour line on the material captured by the camera. 3. Volume calculation: Calculate the real cross-sectional area of the material by using the mapped contour points combined with the belt contour points during idling, and calculate the material volume according to the belt speed. [0003] In the actual application of the above method, since the occlusion problem b...
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IPC IPC(8): G06T7/62G06T7/181G06T5/00G01B11/28G01B11/25G01B11/00
CPCG06T7/62G06T7/181G01B11/28G01B11/25G01B11/002G06T5/70
Inventor 毕胜薄睿智肖畅刘旖恒
Owner DALIAN MARITIME UNIVERSITY