Open Source Computer Vision Library https://opencv.org/

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opencv/modules/calib3d/src

History

Maxim Smolskiy 697512bb9f Merge pull request #26014 from MaximSmolskiy:increase-search-radius-for-corners-neighbors-in-ChessBoardDetector-findQuadNeighbors ... Increase neighbors search radius for corners in ChessBoardDetector:findQuadNeighbors #26014 I didn't do everything right the way I wanted at #25991. I forgot that `edge_len` is edge **squared** length as well as `thresh_scale` is threshold for **squared** scale. So, I wanted to increase scale by `sqrt(2)` times (idea is to use quad diagonal instead of quad side) and therefore `thresh_scale` should be equal to `sqrt(2)^2 = 2`. And refactor variables names to explicitly indicate that they are squared, so that no one else falls into this trap I tested this PR with benchmark ``` python3 objdetect_benchmark.py --configuration=generate_run --board_x=7 --path=res_chessboard --synthetic_object=chessboard ``` PR increases detected chessboards number by `1/2%`: ``` cell_img_size = 100 (default) before category detected chessboard total detected chessboard total chessboard average detected error chessboard all 0.941667 13560 14400 0.596726 Total detected time: 136.68963200000007 sec after category detected chessboard total detected chessboard total chessboard average detected error chessboard all 0.952083 13710 14400 0.595984 Total detected time: 136.55770600000014 sec ---------------------------------------------------------------------------------------------------------------------------------------------- cell_img_size = 10 before category detected chessboard total detected chessboard total chessboard average detected error chessboard all 0.579167 8340 14400 4.198448 Total detected time: 2.535998999999999 sec after category detected chessboard total detected chessboard total chessboard average detected error all 0.591389 8516 14400 4.155250 Total detected time: 2.700832999999997 sec ``` ### 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 - [ ] 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		8 months ago
..
opencl	Misc. modules/ typos (cont.)	7 years ago
usac	fix type for ilp64 api	11 months ago
ap3p.cpp	Merge pull request #23607 from alexander-varjo:alexander-varjo-patch-1	2 years ago
ap3p.h	Add SOLVEPNP_IPPE for planar pose estimation. Add solvePnPGeneric function that returns all the pose solutions and the reprojection errors.	6 years ago
calib3d_c_api.h	Merge pull request #25141 from Kumataro:fix25140_4.x	1 year ago
calibinit.cpp	Merge pull request #26014 from MaximSmolskiy:increase-search-radius-for-corners-neighbors-in-ChessBoardDetector-findQuadNeighbors	8 months ago
calibration.cpp	Merge pull request #25824 from j3knk:calib3d/fix_projectpoints	10 months ago
calibration_handeye.cpp	Merge pull request #24897 from JStech:fix-handeye	11 months ago
checkchessboard.cpp	More fixes for iterators-are-pointers case	2 years ago
chessboard.cpp	Use CV_LOG_DEBUG for debug logging in chessboard detector.	10 months ago
chessboard.hpp	Merge pull request #23109 from seanm:misc-warnings	2 years ago
circlesgrid.cpp	fix detect rotated grid, added test	1 year ago
circlesgrid.hpp	fix detect rotated grid, added test	1 year ago
compat_ptsetreg.cpp	Merge remote-tracking branch 'upstream/3.4' into merge-3.4	3 years ago
distortion_model.hpp	calib3d: move undistort files from imgproc	7 years ago
dls.cpp	Merge pull request #21405 from h6197627:3.4	3 years ago
dls.h	Merge pull request #21405 from h6197627:3.4	3 years ago
epnp.cpp	calib3d: initialize local vars, fix indentation in for loops	6 years ago
epnp.h	Fixed some issues found by static analysis	8 years ago
fisheye.cpp	Added fisheye::distort with non-identity projection matrix.	9 months ago
fisheye.hpp	switch mask type from vector<int> to vector<uchar>	10 years ago
five-point.cpp	Merge pull request #25064 from vpisarev:em_5point_fix	1 year ago
fundam.cpp	Merge pull request #25665 from vrabaud:jacobian	11 months ago
hal_replacement.hpp	Merge pull request #25511 from savuor:rv/hal_projectpoints	12 months ago
homography_decomp.cpp	Merge pull request #13601 from JimZhou-001:JimZhou-001	6 years ago
ippe.cpp	Fixed assertions on ippe solver	5 years ago
ippe.hpp	Merge pull request #23109 from seanm:misc-warnings	2 years ago
levmarq.cpp	Merge remote-tracking branch 'upstream/3.4' into merge-3.4	6 years ago
main.cpp	IPPInitSingelton was added to contain IPP related global variables;	10 years ago
p3p.cpp	Merge pull request #23109 from seanm:misc-warnings	2 years ago
p3p.h	Add SOLVEPNP_IPPE for planar pose estimation. Add solvePnPGeneric function that returns all the pose solutions and the reprojection errors.	6 years ago
polynom_solver.cpp	Merge pull request #19583 from theroyalpekka:patch-1	4 years ago
polynom_solver.h	Normalize line endings and whitespace	13 years ago
posit.cpp	mostly removed obsolete C API from calib3d (at least at the interface level) (#13081)	7 years ago
precomp.hpp	Merge pull request #23109 from seanm:misc-warnings	2 years ago
ptsetreg.cpp	Merge pull request #23078 from ivashmak:update_vsac	2 years ago
quadsubpix.cpp	calib3d: fixed VS2019 warning C4756	5 years ago
rho.cpp	Merge pull request #23109 from seanm:misc-warnings	2 years ago
rho.h	Merge pull request #23109 from seanm:misc-warnings	2 years ago
solvepnp.cpp	Partially back-port #25075 to 4.x	1 year ago
sqpnp.cpp	Merge pull request #21702 from mlourakis:4.x	3 years ago
sqpnp.hpp	cheirality -> chirality	3 years ago
stereobm.cpp	Merge pull request #24301 from hanliutong:rewrite-stereo-sift	2 years ago
stereosgbm.cpp	Merge pull request #24301 from hanliutong:rewrite-stereo-sift	2 years ago
triangulate.cpp	Partially back-port #25075 to 4.x	1 year ago
undistort.dispatch.cpp	Merge pull request #21931 from victor1234:calib3d-add-undistortImagePoints	3 years ago
undistort.simd.hpp	Merge pull request #24325 from hanliutong:rewrite	2 years ago
upnp.cpp	build: GCC9 compilation	6 years ago
upnp.h	build: GCC9 compilation	6 years ago
usac.hpp	Merge pull request #24499 from ivashmak:usac_bug_fix	1 year ago