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some improvements of existing sse3 optimization of bilateral filter in case of 8uc3. Now perf tests take 6120ms instead of previous 7250ms (1.18x speed-up)

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pull/577/head
Ilya Lavrenov 12 years ago
parent 242a6de719
commit efad6942e2
1 changed files with 12 additions and 8 deletions
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  1. 20
      modules/imgproc/src/smooth.cpp

20
modules/imgproc/src/smooth.cpp
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@ -1787,6 +1787,7 @@ public:
#if CV_SSE3
if( haveSSE3 )
{
const __m128i izero = _mm_setzero_si128();
const __m128 _b0 = _mm_set1_ps(static_cast<float>(b0));
const __m128 _g0 = _mm_set1_ps(static_cast<float>(g0));
const __m128 _r0 = _mm_set1_ps(static_cast<float>(r0));
@ -1794,14 +1795,17 @@ public:
for( ; k <= maxk - 4; k += 4 )
{
const uchar* sptr_k = sptr + j + space_ofs[k];
const uchar* sptr_k1 = sptr + j + space_ofs[k+1];
const uchar* sptr_k2 = sptr + j + space_ofs[k+2];
const uchar* sptr_k3 = sptr + j + space_ofs[k+3];
__m128 _b = _mm_set_ps(sptr_k3[0],sptr_k2[0],sptr_k1[0],sptr_k[0]);
__m128 _g = _mm_set_ps(sptr_k3[1],sptr_k2[1],sptr_k1[1],sptr_k[1]);
__m128 _r = _mm_set_ps(sptr_k3[2],sptr_k2[2],sptr_k1[2],sptr_k[2]);
const int* const sptr_k0 = reinterpret_cast<const int*>(sptr + j + space_ofs[k]);
const int* const sptr_k1 = reinterpret_cast<const int*>(sptr + j + space_ofs[k+1]);
const int* const sptr_k2 = reinterpret_cast<const int*>(sptr + j + space_ofs[k+2]);
const int* const sptr_k3 = reinterpret_cast<const int*>(sptr + j + space_ofs[k+3]);
__m128 _b = _mm_cvtepi32_ps(_mm_unpacklo_epi16(_mm_unpacklo_epi8(_mm_cvtsi32_si128(sptr_k0[0]), izero), izero));
__m128 _g = _mm_cvtepi32_ps(_mm_unpacklo_epi16(_mm_unpacklo_epi8(_mm_cvtsi32_si128(sptr_k1[0]), izero), izero));
__m128 _r = _mm_cvtepi32_ps(_mm_unpacklo_epi16(_mm_unpacklo_epi8(_mm_cvtsi32_si128(sptr_k2[0]), izero), izero));
__m128 _z = _mm_cvtepi32_ps(_mm_unpacklo_epi16(_mm_unpacklo_epi8(_mm_cvtsi32_si128(sptr_k3[0]), izero), izero));
_MM_TRANSPOSE4_PS(_b, _g, _r, _z);
__m128 bt = _mm_andnot_ps(_signMask, _mm_sub_ps(_b,_b0));
__m128 gt = _mm_andnot_ps(_signMask, _mm_sub_ps(_g,_g0));

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