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Merge pull request #17800 from Yosshi999:gsoc_sift-universal-intrinsic

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Alexander Alekhin 2020-07-11 19:09:21 +00:00
commit b96e9a4a4a
1 changed files with 12 additions and 17 deletions
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29
modules/features2d/src/sift.simd.hpp
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@ -73,6 +73,7 @@
#include <opencv2/core/hal/hal.hpp>
#include "opencv2/core/hal/intrin.hpp"
#include <opencv2/core/utils/buffer_area.private.hpp>
namespace cv {
@ -167,23 +168,17 @@ float calcOrientationHist(
int i, j, k, len = (radius*2+1)*(radius*2+1);
float expf_scale = -1.f/(2.f * sigma * sigma);
#if CV_SIMD
AutoBuffer<float> bufX(len + v_float32::nlanes);
AutoBuffer<float> bufY(len + v_float32::nlanes);
AutoBuffer<float> bufO(len + v_float32::nlanes);
AutoBuffer<float> bufW(len + v_float32::nlanes);
AutoBuffer<float> bufT(n+4 + v_float32::nlanes);
float *X = alignPtr(bufX.data(), CV_SIMD_WIDTH);
float *Y = alignPtr(bufY.data(), CV_SIMD_WIDTH);
float *Mag = X;
float *Ori = alignPtr(bufO.data(), CV_SIMD_WIDTH);
float *W = alignPtr(bufW.data(), CV_SIMD_WIDTH);
float *temphist = alignPtr(bufT.data(), CV_SIMD_WIDTH)+2;
#else
AutoBuffer<float> buf(len*4 + n+4);
float *X = buf.data(), *Y = X + len, *Mag = X, *Ori = Y + len, *W = Ori + len;
float* temphist = W + len + 2;
#endif
cv::utils::BufferArea area;
float *X = 0, *Y = 0, *Mag, *Ori = 0, *W = 0, *temphist = 0;
area.allocate(X, len, CV_SIMD_WIDTH);
area.allocate(Y, len, CV_SIMD_WIDTH);
area.allocate(Ori, len, CV_SIMD_WIDTH);
area.allocate(W, len, CV_SIMD_WIDTH);
area.allocate(temphist, n+4, CV_SIMD_WIDTH);
area.commit();
temphist += 2;
Mag = X;
for( i = 0; i < n; i++ )
temphist[i] = 0.f;