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Alexander Alekhin f4d55d512f imgproc: fix bit-exact GaussianBlur() / sepFilter2D() (#15855) 
* 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
2019-11-18 01:39:27 +03:00
..
test
imgproc: fix bit-exact GaussianBlur() / sepFilter2D() (#15855)
2019-11-18 01:39:27 +03:00