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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/ORBDescriptorExtractorTest.java
+2 -2
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@@ -53,7 +53,7 @@ public class ORBDescriptorExtractorTest extends OpenCVTestCase {
Mat truth = new Mat(1, 32, CvType.CV_8UC1) {
{
put(0, 0,
6, 74, 6, 129, 2, 130, 56, 0, 36, 132, 66, 165, 172, 6, 3, 72, 102, 61, 163, 214, 0, 144, 65, 232, 4, 32, 138, 129, 4, 21, 37, 88);
6, 74, 6, 129, 2, 130, 56, 0, 44, 132, 66, 165, 172, 6, 3, 72, 102, 61, 171, 214, 0, 144, 65, 232, 4, 32, 138, 131, 4, 21, 37, 217);
}
};
assertDescriptorsClose(truth, descriptors, 1);
@@ -92,7 +92,7 @@ public class ORBDescriptorExtractorTest extends OpenCVTestCase {
Mat truth = new Mat(1, 32, CvType.CV_8UC1) {
{
put(0, 0,
6, 10, 22, 5, 2, 130, 56, 0, 44, 164, 66, 165, 140, 6, 1, 72, 38, 61, 163, 210, 0, 208, 1, 104, 4, 32, 10, 131, 0, 37, 37, 67);
6, 10, 22, 5, 2, 130, 56, 0, 44, 164, 66, 165, 140, 6, 1, 72, 38, 61, 163, 210, 0, 208, 1, 104, 4, 32, 74, 131, 0, 37, 37, 67);
}
};
assertDescriptorsClose(truth, descriptors, 1);