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imgproc: fix bit-exact GaussianBlur() / sepFilter2D() (#15855)

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* imgproc: fix bit-exact GaussianBlur() / sepFilter2D()

- avoid kernels with bad approximation
- GaussiabBlur - apply error-diffusion approximation for kernel (8-bit fraction)

* java(test): update features2d ref data

* test: update test_facedetect
This commit is contained in:
Alexander Alekhin
2019-11-18 01:39:27 +03:00
committed by GitHub
parent 955b20230c
commit f4d55d512f
13 changed files with 349 additions and 117 deletions
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modules/features2d/misc/java/test/BruteForceL1DescriptorMatcherTest.java
+5 -5
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@@ -85,11 +85,11 @@ public class BruteForceL1DescriptorMatcherTest extends OpenCVTestCase {
matSize = 100;
truth = new DMatch[] {
new DMatch(0, 0, 0, 3.0975165f),
new DMatch(1, 1, 0, 3.5680308f),
new DMatch(2, 1, 0, 1.3722466f),
new DMatch(3, 1, 0, 1.3041023f),
new DMatch(4, 1, 0, 3.5970376f)
new DMatch(0, 0, 0, 3.0710702f),
new DMatch(1, 1, 0, 3.562016f),
new DMatch(2, 1, 0, 1.3682679f),
new DMatch(3, 1, 0, 1.3012862f),
new DMatch(4, 1, 0, 1.1852086f)
};
}