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cvtColor RGB 2 Luv u8

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This commit is contained in:
Ilya Lavrenov 2015-01-12 10:59:30 +03:00
parent 584eed633e
commit e20613a776
2 changed files with 92 additions and 1 deletions
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2
modules/imgproc/perf/perf_cvt_color.cpp
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@ -204,7 +204,7 @@ PERF_TEST_P(Size_CvtMode, cvtColor8u,
)
{
Size sz = GetParam();
int mode = COLOR_Lab2RGB;
int mode = COLOR_RGB2Luv;
ChPair ch = getConversionInfo(mode);
mode %= COLOR_COLORCVT_MAX;

91
modules/imgproc/src/color.cpp
View File

@ -5691,9 +5691,43 @@ struct RGB2Luv_b
v_coeff3 = vdupq_n_f32(0.9732824427480916f);
v_coeff4 = vdupq_n_f32(136.259541984732824f);
v_alpha = vdup_n_u8(ColorChannel<uchar>::max());
#elif CV_SSE2
v_zero = _mm_setzero_si128();
v_scale_inv = _mm_set1_ps(1.f/255.f);
v_scale = _mm_set1_ps(2.55f);
v_coeff1 = _mm_set1_ps(0.72033898305084743f);
v_coeff2 = _mm_set1_ps(96.525423728813564f);
v_coeff3 = _mm_set1_ps(0.9732824427480916f);
v_coeff4 = _mm_set1_ps(136.259541984732824f);
#endif
}
#if CV_SSE2
void process(const float * buf,
__m128i & v_l, __m128i & v_u, __m128i & v_v) const
{
__m128 v_l0f = _mm_load_ps(buf);
__m128 v_l1f = _mm_load_ps(buf + 4);
__m128 v_u0f = _mm_load_ps(buf + 8);
__m128 v_u1f = _mm_load_ps(buf + 12);
__m128 v_v0f = _mm_load_ps(buf + 16);
__m128 v_v1f = _mm_load_ps(buf + 20);
_MM_DEINTERLIV_PS(v_l0f, v_l1f, v_u0f, v_u1f, v_v0f, v_v1f)
v_l0f = _mm_mul_ps(v_l0f, v_scale);
v_l1f = _mm_mul_ps(v_l1f, v_scale);
v_u0f = _mm_add_ps(_mm_mul_ps(v_u0f, v_coeff1), v_coeff2);
v_u1f = _mm_add_ps(_mm_mul_ps(v_u1f, v_coeff1), v_coeff2);
v_v0f = _mm_add_ps(_mm_mul_ps(v_v0f, v_coeff3), v_coeff4);
v_v1f = _mm_add_ps(_mm_mul_ps(v_v1f, v_coeff3), v_coeff4);
v_l = _mm_packs_epi32(_mm_cvtps_epi32(v_l0f), _mm_cvtps_epi32(v_l1f));
v_u = _mm_packs_epi32(_mm_cvtps_epi32(v_u0f), _mm_cvtps_epi32(v_u1f));
v_v = _mm_packs_epi32(_mm_cvtps_epi32(v_v0f), _mm_cvtps_epi32(v_v1f));
}
#endif
void operator()(const uchar* src, uchar* dst, int n) const
{
int i, j, scn = srccn;
@ -5735,6 +5769,26 @@ struct RGB2Luv_b
v_dst.val[2] = vmulq_f32(vcvtq_f32_u32(vmovl_u16(vget_high_u16(v_t2))), v_scale_inv);
vst3q_f32(buf + j + 12, v_dst);
}
#elif CV_SSE2
if (scn == 3)
{
for ( ; j <= (dn * 3 - 16); j += 16, src += 16)
{
__m128i v_src = _mm_loadu_si128((__m128i const *)src);
__m128i v_src_p = _mm_unpacklo_epi8(v_src, v_zero);
_mm_store_ps(buf + j, _mm_mul_ps(_mm_cvtepi32_ps(_mm_unpacklo_epi16(v_src_p, v_zero)), v_scale_inv));
_mm_store_ps(buf + j + 4, _mm_mul_ps(_mm_cvtepi32_ps(_mm_unpackhi_epi16(v_src_p, v_zero)), v_scale_inv));
v_src_p = _mm_unpackhi_epi8(v_src, v_zero);
_mm_store_ps(buf + j + 8, _mm_mul_ps(_mm_cvtepi32_ps(_mm_unpacklo_epi16(v_src_p, v_zero)), v_scale_inv));
_mm_store_ps(buf + j + 12, _mm_mul_ps(_mm_cvtepi32_ps(_mm_unpackhi_epi16(v_src_p, v_zero)), v_scale_inv));
}
int jr = j % 3;
if (jr)
src -= jr, j -= jr;
}
#endif
for( ; j < dn*3; j += 3, src += scn )
{
@ -5760,6 +5814,40 @@ struct RGB2Luv_b
vst3_u8(dst + j, v_dst);
}
#elif CV_SSE2
for ( ; j <= (dn - 32) * 3; j += 96)
{
__m128i v_l_0, v_u_0, v_v_0;
process(buf + j,
v_l_0, v_u_0, v_v_0);
__m128i v_l_1, v_u_1, v_v_1;
process(buf + j + 24,
v_l_1, v_u_1, v_v_1);
__m128i v_l0 = _mm_packus_epi16(v_l_0, v_l_1);
__m128i v_u0 = _mm_packus_epi16(v_u_0, v_u_1);
__m128i v_v0 = _mm_packus_epi16(v_v_0, v_v_1);
process(buf + j + 48,
v_l_0, v_u_0, v_v_0);
process(buf + j + 72,
v_l_1, v_u_1, v_v_1);
__m128i v_l1 = _mm_packus_epi16(v_l_0, v_l_1);
__m128i v_u1 = _mm_packus_epi16(v_u_0, v_u_1);
__m128i v_v1 = _mm_packus_epi16(v_v_0, v_v_1);
_MM_INTERLIV_EPI8(v_l0, v_l1, v_u0, v_u1, v_v0, v_v1)
_mm_storeu_si128((__m128i *)(dst + j), v_l0);
_mm_storeu_si128((__m128i *)(dst + j + 16), v_l1);
_mm_storeu_si128((__m128i *)(dst + j + 32), v_u0);
_mm_storeu_si128((__m128i *)(dst + j + 48), v_u1);
_mm_storeu_si128((__m128i *)(dst + j + 64), v_v0);
_mm_storeu_si128((__m128i *)(dst + j + 80), v_v1);
}
#endif
for( ; j < dn*3; j += 3 )
@ -5777,6 +5865,9 @@ struct RGB2Luv_b
#if CV_NEON
float32x4_t v_scale, v_scale_inv, v_coeff1, v_coeff2, v_coeff3, v_coeff4;
uint8x8_t v_alpha;
#elif CV_SSE2
__m128 v_scale, v_scale_inv, v_coeff1, v_coeff2, v_coeff3, v_coeff4;
__m128i v_zero;
#endif
};