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[move sift.cpp] Updated internal calls to linear resize to use bit-exact version

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original commit: 8c394a4f2e
This commit is contained in:
Vitaly Tuzov 2017-12-01 13:10:59 +03:00
parent 69d43e2997
commit c5f06814bc
1 changed files with 6 additions and 1 deletions
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7
modules/features2d/src/sift.cpp
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@ -162,7 +162,8 @@ static const float SIFT_DESCR_MAG_THR = 0.2f;
// factor used to convert floating-point descriptor to unsigned char
static const float SIFT_INT_DESCR_FCTR = 512.f;
#if 0
#define DoG_TYPE_SHORT 0
#if DoG_TYPE_SHORT
// intermediate type used for DoG pyramids
typedef short sift_wt;
static const int SIFT_FIXPT_SCALE = 48;
@ -198,7 +199,11 @@ static Mat createInitialImage( const Mat& img, bool doubleImageSize, float sigma
{
sig_diff = sqrtf( std::max(sigma * sigma - SIFT_INIT_SIGMA * SIFT_INIT_SIGMA * 4, 0.01f) );
Mat dbl;
#if DoG_TYPE_SHORT
resize(gray_fpt, dbl, Size(gray_fpt.cols*2, gray_fpt.rows*2), 0, 0, INTER_LINEAR_EXACT);
#else
resize(gray_fpt, dbl, Size(gray_fpt.cols*2, gray_fpt.rows*2), 0, 0, INTER_LINEAR);
#endif
GaussianBlur(dbl, dbl, Size(), sig_diff, sig_diff);
return dbl;
}