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fixed the error in SURF when no keypoint detected

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This commit is contained in:
Liu Liu 2010-05-18 07:16:24 +00:00
parent d79c97696b
commit a69804e158
1 changed files with 8 additions and 8 deletions
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16
modules/features2d/src/surf.cpp
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@ -352,8 +352,8 @@ static CvSeq* icvFastHessianDetector( const CvMat* sum, const CvMat* mask_sum,
CvSURFPoint point = cvSURFPoint( cvPoint2D32f(center_j,center_i),
CV_SIGN(trace_ptr[j]), sizes[layer], 0, val0 );
/* Interpolate maxima location within the 3x3x3 neighbourhood */
/* Interpolate maxima location within the 3x3x3 neighbourhood */
int ds = sizes[layer]-sizes[layer-1];
int interp_ok = icvInterpolateKeypoint( N9, sampleStep, sampleStep, ds, &point );
@ -430,7 +430,7 @@ struct SURFInvoker
CvMat _angle = cvMat(1, max_ori_samples, CV_32F, angle);
CvMat _patch = cvMat(PATCH_SZ+1, PATCH_SZ+1, CV_8U, PATCH);
int k, k1 = range.begin(), k2 = range.end();
int k, k1 = range.begin(), k2 = range.end();
int maxSize = 0;
for( k = k1; k < k2; k++ )
@ -662,7 +662,6 @@ const float SURFInvoker::DESC_SIGMA = 3.3f;
}
CV_IMPL void
cvExtractSURF( const CvArr* _img, const CvArr* _mask,
CvSeq** _keypoints, CvSeq** _descriptors,
@ -761,10 +760,11 @@ cvExtractSURF( const CvArr* _img, const CvArr* _mask,
}
}
cvScale( &_DW, &_DW, 1./gs );
cv::parallel_for(cv::BlockedRange(0, N),
cv::SURFInvoker(&params, keypoints, descriptors, img, sum,
apt, aptw, nangle0, &DW[0][0]));
if ( N > 0 )
cv::parallel_for(cv::BlockedRange(0, N),
cv::SURFInvoker(&params, keypoints, descriptors, img, sum,
apt, aptw, nangle0, &DW[0][0]));
//cv::SURFInvoker(&params, keypoints, descriptors, img, sum,
// apt, aptw, nangle0, &DW[0][0])(cv::BlockedRange(0, N));