Texture coordinates were stored incorrectly (3-channel array is read as if there were 2 channels), fixed
Faces were pushed back to the output array instead of indexed writing which produced a lot of empty faces, fixed
A set of ground truth tests were added to cover these issues
std::vector<cv::Mat> support added forsaveMesh() which is required for Python bindings
More command line args were added to rasterization test data generator

Pull Request Readiness Checklist

See details athttps://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

I agree to contribute to the project under Apache 2 License.
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
The PR is proposed to the proper branch
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

Rostislav Vasilikhin added11 commits

April 4, 2024 12:57

download script added

0b88dc5

extraction progress

7267bbd

verbose, refactoring

62b2516

script: minors

e2a6a83

more fixes to download script

af3c930

script moved to benchmark repo

a5a341d

test fixed

3e25d4a

testdata generator: custom params

ad62a04

load mesh: fix texCoords and indices

38deee5

adding gold vals

a807470

saveMesh: support vector<Mat>

d6560c7

asmorkalov added bug category: samples category: 3d module labels

Apr 10, 2024

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asmorkalov commentedApr 10, 2024

2024-04-10T04:39:24.4511239Z ======================================================================2024-04-10T04:39:24.4513335Z FAIL: test_loadMesh (test_iomesh.raster_test)2024-04-10T04:39:24.4516024Z ----------------------------------------------------------------------2024-04-10T04:39:24.4518133Z Traceback (most recent call last):2024-04-10T04:39:24.4521164Z   File "/home/ci/opencv/modules/3d/misc/python/test/test_iomesh.py", line 36, in test_loadMesh2024-04-10T04:39:24.4525235Z     self.fail('texture coordinates array should be 1x18x2 or 18x1x2')2024-04-10T04:39:24.4528255Z AssertionError: texture coordinates array should be 1x18x2 or 18x1x22024-04-10T04:39:24.4530100Z 2024-04-10T04:39:24.4531218Z ----------------------------------------------------------------------