Angular point detection method and angular point detection device
A corner point detection and corner point technology, applied in the field of image processing, can solve the problems of inaccurate image processing results, difficult image processing to detect corner pixels quickly and accurately, and achieves a simple implementation method, low hardware cost, and improved accuracy. degree of effect
Active Publication Date: 2016-04-20
SPREADTRUM COMM (SHANGHAI) CO LTD
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[0004] The invention solves the problem that it is difficult to quickly and accurately detect corner pixels in image processing, resulting in inaccurate image processing results
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[0043] In the process of detecting corner points in the prior art, it is difficult to detect the corner points quickly and accurately, and the image processing is inaccurate.
[0044] In order to solve the above problems, the technical solution of the present invention provides a corner detection method, such as figure 1 As shown, the method includes:
[0045] Execute step S1, respectively acquire the confidence level that the first pixel is a corner point according to each detection template, and the first pixel is a pixel to be detected.
[0046] In this application document, corresponding detection templates can be set according to the direction of detecting corner points, that is, different detection templates can be set corresponding to different detection directions of corner points.
[0047] Corresponding to each detection template, the confidence degree of the corner point can be correspondingly obtained. For example, for any detection module, the sum of the product o...
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The invention discloses an angular point detection method and an angular point detection device, which are used for detection of an angular point of an image. The angular point detection method is characterized in that a first pixel can be acquired respectively by various detection templates, and can be used as a confidence level of an angular point, and the first pixel can be used as the pixel to be detected; a first set can be acquired according to the first pixel, which is used as the confidence level of the angular point, and the first set can be determined according to a non-zero position of a first detection template, and the second set can be determined according to a zero point of the first detection template; when the difference value between the mean value of the first set values and the mean value of the second set values is greater than or equal to the difference threshold value, the first pixel can be determined to be the angular point. The angular point detection method is advantageous in that the detection of the angular points in different directions can be realized quickly and accurately, and the detection accuracy of the angular points can be effectively improved, and the image processing effect can be improved; the realization method is simple, and the hardware cost is low.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to a corner detection method and device. Background technique [0002] Corner detection detection technology is a very key technology in image processing, for example, in image fusion, image edge enhancement, moving target detection and tracking, optical flow calculation and three-dimensional reconstruction, it is necessary to detect the corners in image data. Click to check. An image corner is a point where the grayscale transformation value of the pixel in all directions within its field is sufficiently high. The corner is an important feature of the image point. The accurate extraction of the corner is of great significance for image matching, target recognition and other neighborhoods. . [0003] Corner detection methods include template matching-based detection methods and geometric feature-based detection methods. However, in the process of detecting corner ...
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IPC IPC(8): G06T7/00
Inventor 彭晓峰朱洪波张乐王浩
Owner SPREADTRUM COMM (SHANGHAI) CO LTD