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Fix generateImage for charuco chessboard by AleksandrPanov · Pull Request #24873 · opencv/opencv · GitHub
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Fix generateImage for charuco chessboard
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Fix generateImage for charuco chessboard #24873
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fixed marker generation in charuco board #25673 When generating Charuco board markers in `generateImage()`, a problem occurs as in #24806, #24873: In low resolution:  In medium resolution:  This PR fixed this problems:   The test checks the inner and outer borders of the Aruco markers. In the outer border of Aruco marker, all pixels should be white. In the inner border of Aruco marker, all pixels should be black.  ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
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Fixes #24806
The problem was only if the size of the image is not completely divided by the size of the square of the chessboard.
Now the corners of the chessboard are generated as closely as possible with the values of getChessboardCorners(), and now the error (between chessboard corners) is no more than 0.5 pixels.
Before fix:
After fix:
There are still some problems with ArUco markers.
Pull Request Readiness Checklist
See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request
Patch to opencv_extra has the same branch name.