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6699ca1a40
Fix mesh loading for texture coordinates and face indices #25382 ### This PR changes * 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 for `saveMesh()` which is required for Python bindings * More command line args were added to rasterization test data generator ### 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. - [x] The feature is well documented and sample code can be built with the project CMake
47 lines
1.6 KiB
Python
47 lines
1.6 KiB
Python
#!/usr/bin/env python
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# Python 2/3 compatibility
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from __future__ import print_function
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import os, numpy
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import math
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import unittest
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import cv2 as cv
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from tests_common import NewOpenCVTests
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class raster_test(NewOpenCVTests):
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def test_loadCloud(self):
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fin = self.find_file("pointcloudio/orig.obj")
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points, normals, colors = cv.loadPointCloud(fin)
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if points.shape != (8, 1, 3):
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self.fail('point array should be 8x1x3')
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if normals.shape != (6, 1, 3):
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self.fail('normals array should be 6x1x3')
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if colors.shape != (8, 1, 3):
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self.fail('colors array should be 8x1x3')
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def test_loadMesh(self):
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fin = self.find_file("pointcloudio/orig.obj")
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points, indices, normals, colors, texCoords = cv.loadMesh(fin)
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goodShapes = [(1, 18, 3), (18, 1, 3)]
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errorMsg = "%s array should be 18x1x3 or 1x18x3"
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for a, s in [(points, 'points'), (normals, 'normals'), (colors, 'colors')]:
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if a.shape not in goodShapes:
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self.fail(errorMsg % s)
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if texCoords.shape not in [(1, 18, 2), (18, 1, 2), (18, 2)]:
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self.fail('texture coordinates array should be 1x18x2 or 18x1x2')
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if isinstance(indices, numpy.ndarray):
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if indices.shape not in [(1, 6, 3), (6, 1, 3)]:
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self.fail('indices array should be 1x6x3 or 6x1x3')
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elif isinstance(indices, list) or isinstance(indices, tuple):
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for i in indices:
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if len(indices) != 6 or i.shape != (1, 3):
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self.fail('indices array should be 1x6x3 or 6x1x3')
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if __name__ == '__main__':
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NewOpenCVTests.bootstrap()
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