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compareHist

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This commit is contained in:
Ilya Lavrenov 2015-01-12 10:59:31 +03:00
parent 6bce6ee34a
commit 33176db5dc
1 changed files with 101 additions and 5 deletions
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106
modules/imgproc/src/histogram.cpp
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@ -2284,15 +2284,20 @@ double cv::compareHist( InputArray _H1, InputArray _H2, int method )
CV_Assert( it.planes[0].isContinuous() && it.planes[1].isContinuous() );
#if CV_SSE2
bool haveSIMD = checkHardwareSupport(CV_CPU_SSE2);
#endif
for( size_t i = 0; i < it.nplanes; i++, ++it )
{
const float* h1 = it.planes[0].ptr<float>();
const float* h2 = it.planes[1].ptr<float>();
len = it.planes[0].rows*it.planes[0].cols*H1.channels();
j = 0;
if( (method == CV_COMP_CHISQR) || (method == CV_COMP_CHISQR_ALT))
{
for( j = 0; j < len; j++ )
for( ; j < len; j++ )
{
double a = h1[j] - h2[j];
double b = (method == CV_COMP_CHISQR) ? h1[j] : h1[j] + h2[j];
@ -2302,7 +2307,51 @@ double cv::compareHist( InputArray _H1, InputArray _H2, int method )
}
else if( method == CV_COMP_CORREL )
{
for( j = 0; j < len; j++ )
#if CV_SSE2
if (haveSIMD)
{
__m128d v_s1 = _mm_setzero_pd(), v_s2 = v_s1;
__m128d v_s11 = v_s1, v_s22 = v_s1, v_s12 = v_s1;
for ( ; j <= len - 4; j += 4)
{
__m128 v_a = _mm_loadu_ps(h1 + j);
__m128 v_b = _mm_loadu_ps(h2 + j);
// 0-1
__m128d v_ad = _mm_cvtps_pd(v_a);
__m128d v_bd = _mm_cvtps_pd(v_b);
v_s12 = _mm_add_pd(v_s12, _mm_mul_pd(v_ad, v_bd));
v_s11 = _mm_add_pd(v_s11, _mm_mul_pd(v_ad, v_ad));
v_s22 = _mm_add_pd(v_s22, _mm_mul_pd(v_bd, v_bd));
v_s1 = _mm_add_pd(v_s1, v_ad);
v_s2 = _mm_add_pd(v_s2, v_bd);
// 2-3
v_ad = _mm_cvtps_pd(_mm_castsi128_ps(_mm_srli_si128(_mm_castps_si128(v_a), 8)));
v_bd = _mm_cvtps_pd(_mm_castsi128_ps(_mm_srli_si128(_mm_castps_si128(v_b), 8)));
v_s12 = _mm_add_pd(v_s12, _mm_mul_pd(v_ad, v_bd));
v_s11 = _mm_add_pd(v_s11, _mm_mul_pd(v_ad, v_ad));
v_s22 = _mm_add_pd(v_s22, _mm_mul_pd(v_bd, v_bd));
v_s1 = _mm_add_pd(v_s1, v_ad);
v_s2 = _mm_add_pd(v_s2, v_bd);
}
double CV_DECL_ALIGNED(16) ar[10];
_mm_store_pd(ar, v_s12);
_mm_store_pd(ar + 2, v_s11);
_mm_store_pd(ar + 4, v_s22);
_mm_store_pd(ar + 6, v_s1);
_mm_store_pd(ar + 8, v_s2);
s12 += ar[0] + ar[1];
s11 += ar[2] + ar[3];
s22 += ar[4] + ar[5];
s1 += ar[6] + ar[7];
s2 += ar[8] + ar[9];
}
#endif
for( ; j < len; j++ )
{
double a = h1[j];
double b = h2[j];
@ -2316,7 +2365,6 @@ double cv::compareHist( InputArray _H1, InputArray _H2, int method )
}
else if( method == CV_COMP_INTERSECT )
{
j = 0;
#if CV_NEON
float32x4_t v_result = vdupq_n_f32(0.0f);
for( ; j <= len - 4; j += 4 )
@ -2324,13 +2372,61 @@ double cv::compareHist( InputArray _H1, InputArray _H2, int method )
float CV_DECL_ALIGNED(16) ar[4];
vst1q_f32(ar, v_result);
result += ar[0] + ar[1] + ar[2] + ar[3];
#elif CV_SSE2
if (haveSIMD)
{
__m128d v_result = _mm_setzero_pd();
for ( ; j <= len - 4; j += 4)
{
__m128 v_src = _mm_min_ps(_mm_loadu_ps(h1 + j),
_mm_loadu_ps(h2 + j));
v_result = _mm_add_pd(v_result, _mm_cvtps_pd(v_src));
v_src = _mm_castsi128_ps(_mm_srli_si128(_mm_castps_si128(v_src), 8));
v_result = _mm_add_pd(v_result, _mm_cvtps_pd(v_src));
}
double CV_DECL_ALIGNED(16) ar[2];
_mm_store_pd(ar, v_result);
result += ar[0] + ar[1];
}
#endif
for( ; j < len; j++ )
result += std::min(h1[j], h2[j]);
}
else if( method == CV_COMP_BHATTACHARYYA )
{
for( j = 0; j < len; j++ )
#if CV_SSE2
if (haveSIMD)
{
__m128d v_s1 = _mm_setzero_pd(), v_s2 = v_s1, v_result = v_s1;
for ( ; j <= len - 4; j += 4)
{
__m128 v_a = _mm_loadu_ps(h1 + j);
__m128 v_b = _mm_loadu_ps(h2 + j);
__m128d v_ad = _mm_cvtps_pd(v_a);
__m128d v_bd = _mm_cvtps_pd(v_b);
v_s1 = _mm_add_pd(v_s1, v_ad);
v_s2 = _mm_add_pd(v_s2, v_bd);
v_result = _mm_add_pd(v_result, _mm_sqrt_pd(_mm_mul_pd(v_ad, v_bd)));
v_ad = _mm_cvtps_pd(_mm_castsi128_ps(_mm_srli_si128(_mm_castps_si128(v_a), 8)));
v_bd = _mm_cvtps_pd(_mm_castsi128_ps(_mm_srli_si128(_mm_castps_si128(v_b), 8)));
v_s1 = _mm_add_pd(v_s1, v_ad);
v_s2 = _mm_add_pd(v_s2, v_bd);
v_result = _mm_add_pd(v_result, _mm_sqrt_pd(_mm_mul_pd(v_ad, v_bd)));
}
double CV_DECL_ALIGNED(16) ar[6];
_mm_store_pd(ar, v_s1);
_mm_store_pd(ar + 2, v_s2);
_mm_store_pd(ar + 4, v_result);
s1 += ar[0] + ar[1];
s2 += ar[2] + ar[3];
result += ar[4] + ar[5];
}
#endif
for( ; j < len; j++ )
{
double a = h1[j];
double b = h2[j];
@ -2341,7 +2437,7 @@ double cv::compareHist( InputArray _H1, InputArray _H2, int method )
}
else if( method == CV_COMP_KL_DIV )
{
for( j = 0; j < len; j++ )
for( ; j < len; j++ )
{
double p = h1[j];
double q = h2[j];