Round hole detection method and device, electronic equipment and storage medium
A detection method and circular hole technology, applied in the field of image processing, can solve the problems of inaccurate detection, different, different shapes of circular hole images, etc., and achieve the effect of precise positioning and detection.
Pending Publication Date: 2021-01-05
佛山(华南)新材料研究院
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Problems solved by technology
If the relative positions of the round hole and the camera are different, the direction of the distortion will be different, resulting in different shapes of the round hole images at different positions. If all the round holes in the image are directly detected in the same way, the detection may be inaccurate
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[0061] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0062] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific ...
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The invention discloses a round hole detection method and device, electronic equipment and a storage medium, and relates to the technical field of image processing. The method comprises the followingsteps: acquiring an initial image of a plate with round holes, extracting a region of interest of each round hole, carrying out edge detection on the region of interest of each round hole, extractingpixel points of the outer contour of each round hole region; utilizing the number of the outer contours, the area of the outer contours and the maximum distance between the contour points on the outercontours to extract effective contour points from the pixel points; performing minimum bounding circle processing on the extracted effective contour points to obtain a minimum bounding circle, wherein the circle center position of the minimum bounding circle is the circle center position of the round hole, the radius of the minimum bounding circle is the radius of the round hole, and thus obtainign the position and radius of each round hole. According to the invention, each round hole is independently detected, the problem of inaccurate detection caused by detecting all the round holes in theimage according to the same mode in the prior art is solved, and thus accurate positioning and detection of the round holes are realized.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to a circular hole detection method, device, electronic equipment and storage medium. Background technique [0002] At present, the processing procedures such as cutting and drilling of plates have basically realized automatic production, but due to the existence of factors such as tool wear and operation errors, it is necessary to detect the diameter of the round hole and the position of the center of the circle. [0003] In related technologies, the solution for detecting round holes is as follows: a camera collects image information of a plate and sends it to a host computer; the host computer processes the collected image information to realize the detection of round holes. Due to the certain thickness of the plate, the image of the round hole captured by the camera will be distorted like an ellipse. If the relative positions of the round hole and the camera ar...
Claims
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IPC IPC(8): G06T7/00G06T7/11G06T7/13G06T7/62G06T7/66G06T7/70G06T5/30G06T5/00G06K9/32
CPCG06T7/0004G06T7/11G06T7/13G06T7/62G06T7/70G06T5/30G06T7/66G06T5/70
Inventor 王伟华肖曦杨欣雨
Owner 佛山(华南)新材料研究院