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Image boundary determination method and device, equipment and storage medium

A technology for determining methods and boundaries, applied in the field of image processing, can solve problems that sometimes exist, affect the accuracy of boundary determination, and numerical differences

Active Publication Date: 2017-08-18
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing method for determining the image boundary, a series of operations are required on the image, such as binarization processing or edge detection.
[0003] For example, for circular graphics or similar graphics with two obvious boundaries (outer boundary and inner boundary), the location of the boundary is sometimes located at the inner boundary and sometimes at the outer boundary, and the values ​​of the outer boundary and inner boundary are different, Affects the accuracy of boundary judgment

Method used

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  • Image boundary determination method and device, equipment and storage medium
  • Image boundary determination method and device, equipment and storage medium
  • Image boundary determination method and device, equipment and storage medium

Examples

Experimental program
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Embodiment 1

[0056] Figure 1a It is a flow chart of a method for determining an image boundary provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of identifying an image boundary, and the method can be executed by an image boundary determination device, which can use software and / or or by means of hardware. The method specifically may include the following steps:

[0057] S110. Perform binarization on the target image to obtain a binarized target image.

[0058] Specifically, binary processing is performed on the target image, and the target image can be obtained using an image acquisition device. Wherein, the image acquisition device may be a camera or a terminal device equipped with a camera. The binarization process is to set the gray value of the pixel on the target image to 0 or 255, that is, the entire image presents a visual effect of only black and white. Optionally, the target image may be a circular figure or a similar figure wit...

Embodiment 2

[0079] figure 2 It is a flow chart of a method for determining an image boundary provided by Embodiment 2 of the present invention. On the basis of the above-mentioned embodiments, this embodiment is concerned with "according to preset rules, calculate the foreground point of each target boundary within a preset area. Eigenvalues" were optimized. The method specifically may include the following steps:

[0080] S210. Perform binarization on the target image to obtain a binarized target image.

[0081] S220. Determine a basic boundary of the binarized target image, where the basic boundary is a basic right boundary.

[0082] S230. According to the basic boundary, determine a plurality of target boundaries with a preset number of left and right columns or a preset number of upper and lower rows of the basic boundary.

[0083] S240. Calculate the center position in the row direction of the binarized target image to obtain the center position of each target boundary.

[0084]...

Embodiment 3

[0111] image 3 It is a flow chart of a method for determining an image boundary provided in Embodiment 3 of the present invention, and this embodiment is optimized on the basis of the foregoing embodiments. The method specifically may include the following steps:

[0112] S310. Perform binarization on the target image to obtain a binarized target image.

[0113] S320. Determine a basic boundary of the binarized target image, where the basic boundary is a basic right boundary.

[0114] S330. According to the basic boundary, determine a plurality of target boundaries with a preset number of left and right columns or a preset number of upper and lower rows of the basic boundary.

[0115] S340. According to a preset rule, calculate the feature value of the foreground point of each target boundary within the preset area.

[0116] S350. Determine the boundary of the target image from the multiple target boundaries according to the obtained multiple feature values.

[0117] S360...

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Abstract

An embodiment of the invention discloses an image boundary determination method and device, equipment and a storage medium. The method comprises the following steps: carrying out binaryzation on a target image to obtain a binary target image; determining a basic boundary of the binary target image, wherein the basic boundary is a basic right boundary; according to the basic boundary, determining multiple target boundaries of left and right preset row number and upper and lower preset line number of the basic boundary; according to a preset rule, calculating a characteristic value of a foreground point of each target boundary in a preset region; and according to the obtained characteristic values, determining boundaries of a target image from the multiple target boundaries. Precision in determining a right boundary of the image is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of image processing, and in particular, to an image boundary determination method, device, device, and storage medium. Background technique [0002] In the existing method for determining the image boundary, a series of operations are required on the image, such as binarization or edge detection. . [0003] For example, for circular graphics or similar graphics with two obvious boundaries (outer boundary and inner boundary), the location of the boundary is sometimes located at the inner boundary, and sometimes at the outer boundary, and the values ​​​​of the outer boundary and inner boundary are different. Affect the accuracy of boundary judgment. [0004] Banknote identification includes face value-oriented identification and banknote authenticity identification. In banknote identification, the accuracy of the boundary judgment of character strings on banknotes affects the accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/20G06T7/13G06T7/11
CPCG07D7/2016
Inventor 李杰
Owner SHENZHEN YIHUA COMP