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RGB2Luv_f: R, G, B limited to [0, 1]

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This commit is contained in:
Rostislav Vasilikhin 2017-07-05 21:06:14 +03:00
parent 82811d0706
commit 6c71988c54
1 changed files with 27 additions and 0 deletions
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27
modules/imgproc/src/color.cpp
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@ -6607,6 +6607,7 @@ struct RGB2Luv_f
for( ; i <= n - 12; i += 12, src += scn * 4 )
{
float32x4x3_t v_src = vld3q_f32(src);
if( gammaTab )
{
v_src.val[0] = vmulq_f32(v_src.val[0], vdupq_n_f32(gscale));
@ -6627,6 +6628,15 @@ struct RGB2Luv_f
for( ; i <= n - 12; i += 12, src += scn * 4 )
{
float32x4x4_t v_src = vld4q_f32(src);
v_src.val[0] = vmaxq_f32(v_src.val[0], vdupq_n_f32(0));
v_src.val[1] = vmaxq_f32(v_src.val[1], vdupq_n_f32(0));
v_src.val[2] = vmaxq_f32(v_src.val[2], vdupq_n_f32(0));
v_src.val[0] = vminq_f32(v_src.val[0], vdupq_n_f32(1));
v_src.val[1] = vminq_f32(v_src.val[1], vdupq_n_f32(1));
v_src.val[2] = vminq_f32(v_src.val[2], vdupq_n_f32(1));
if( gammaTab )
{
v_src.val[0] = vmulq_f32(v_src.val[0], vdupq_n_f32(gscale));
@ -6670,6 +6680,20 @@ struct RGB2Luv_f
_mm_deinterleave_ps(v_r0, v_r1, v_g0, v_g1, v_b0, v_b1, v_a0, v_a1);
}
v_r0 = _mm_max_ps(v_r0, _mm_setzero_ps());
v_r1 = _mm_max_ps(v_r1, _mm_setzero_ps());
v_g0 = _mm_max_ps(v_g0, _mm_setzero_ps());
v_g1 = _mm_max_ps(v_g1, _mm_setzero_ps());
v_b0 = _mm_max_ps(v_b0, _mm_setzero_ps());
v_b1 = _mm_max_ps(v_b1, _mm_setzero_ps());
v_r0 = _mm_min_ps(v_r0, _mm_set1_ps(1.f));
v_r1 = _mm_min_ps(v_r1, _mm_set1_ps(1.f));
v_g0 = _mm_min_ps(v_g0, _mm_set1_ps(1.f));
v_g1 = _mm_min_ps(v_g1, _mm_set1_ps(1.f));
v_b0 = _mm_min_ps(v_b0, _mm_set1_ps(1.f));
v_b1 = _mm_min_ps(v_b1, _mm_set1_ps(1.f));
if ( gammaTab )
{
__m128 v_gscale = _mm_set1_ps(gscale);
@ -6704,6 +6728,9 @@ struct RGB2Luv_f
for( ; i < n; i += 3, src += scn )
{
float R = src[0], G = src[1], B = src[2];
R = std::min(std::max(R, 0.f), 1.f);
G = std::min(std::max(G, 0.f), 1.f);
B = std::min(std::max(B, 0.f), 1.f);
if( gammaTab )
{
R = splineInterpolate(R*gscale, gammaTab, GAMMA_TAB_SIZE);