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Merge pull request #8697 from sovrasov:cvt_col_bgra_bgra_fix

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This commit is contained in:
Vadim Pisarevsky 2017-05-17 14:11:51 +00:00
commit 03aa69da99
2 changed files with 31 additions and 6 deletions
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12
modules/imgproc/src/color.cpp
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@ -688,7 +688,7 @@ template<typename _Tp> struct RGB2RGB
for( int i = 0; i < n; i += 4 )
{
_Tp t0 = src[i], t1 = src[i+1], t2 = src[i+2], t3 = src[i+3];
dst[i] = t2; dst[i+1] = t1; dst[i+2] = t0; dst[i+3] = t3;
dst[i+bidx] = t0; dst[i+1] = t1; dst[i+(bidx^2)] = t2; dst[i+3] = t3;
}
}
}
@ -802,25 +802,25 @@ template<> struct RGB2RGB<uchar>
for ( ; i <= n - 64; i += 64 )
{
uint8x16x4_t v_src = vld4q_u8(src + i), v_dst;
v_dst.val[0] = v_src.val[2];
v_dst.val[0] = v_src.val[bidx];
v_dst.val[1] = v_src.val[1];
v_dst.val[2] = v_src.val[0];
v_dst.val[2] = v_src.val[bidx^2];
v_dst.val[3] = v_src.val[3];
vst4q_u8(dst + i, v_dst);
}
for ( ; i <= n - 32; i += 32 )
{
uint8x8x4_t v_src = vld4_u8(src + i), v_dst;
v_dst.val[0] = v_src.val[2];
v_dst.val[0] = v_src.val[bidx];
v_dst.val[1] = v_src.val[1];
v_dst.val[2] = v_src.val[0];
v_dst.val[2] = v_src.val[bidx^2];
v_dst.val[3] = v_src.val[3];
vst4_u8(dst + i, v_dst);
}
for ( ; i < n; i += 4)
{
uchar t0 = src[i], t1 = src[i+1], t2 = src[i+2], t3 = src[i+3];
dst[i] = t2; dst[i+1] = t1; dst[i+2] = t0; dst[i+3] = t3;
dst[i+bidx] = t0; dst[i+1] = t1; dst[i+(bidx^2)] = t2; dst[i+3] = t3;
}
}
}

25
modules/imgproc/test/test_color.cpp
View File

@ -2190,3 +2190,28 @@ TEST(ImgProc_Bayer2RGBA, accuracy)
}
}
}
TEST(ImgProc_BGR2RGBA, regression_8696)
{
Mat src(Size(80, 10), CV_8UC4);
src.setTo(Scalar(255, 0, 200, 100));
Mat dst;
cvtColor(src, dst, COLOR_BGR2BGRA);
EXPECT_DOUBLE_EQ(norm(dst - src, NORM_INF), 0.);
}
TEST(ImgProc_BGR2RGBA, 3ch24ch)
{
Mat src(Size(80, 10), CV_8UC3);
src.setTo(Scalar(200, 0, 200));
Mat dst;
cvtColor(src, dst, COLOR_BGR2BGRA);
Mat expected(Size(80, 10), CV_8UC4);
expected.setTo(Scalar(80, 0, 200, 255));
EXPECT_DOUBLE_EQ(norm(expected - dst, NORM_INF), 0.);
}