generic-library/opencv
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

added assertion for small image sizes to SURF_GPU (ticket #1323)

Browse Source
This commit is contained in:
Vladislav Vinogradov 2011-09-05 06:03:49 +00:00
parent 914ed44e28
commit b371bd68df
2 changed files with 26 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
modules/gpu/src/cuda/surf.cu
View File

@ -323,7 +323,7 @@ namespace cv { namespace gpu { namespace surf
const int layer_rows = img_rows >> octave;
const int layer_cols = img_cols >> octave;
int min_margin = ((calcSize(octave, 2) >> 1) >> octave) + 1;
const int min_margin = ((calcSize(octave, 2) >> 1) >> octave) + 1;
dim3 threads(16, 16);

39
modules/gpu/src/surf.cpp
View File

@ -84,6 +84,21 @@ using namespace cv::gpu::surf;
namespace
{
int calcSize(int octave, int layer)
{
/* Wavelet size at first layer of first octave. */
const int HAAR_SIZE0 = 9;
/* Wavelet size increment between layers. This should be an even number,
such that the wavelet sizes in an octave are either all even or all odd.
This ensures that when looking for the neighbours of a sample, the layers
above and below are aligned correctly. */
const int HAAR_SIZE_INC = 6;
return (HAAR_SIZE0 + HAAR_SIZE_INC * layer) << octave;
}
class SURF_GPU_Invoker : private CvSURFParams
{
public:
@ -102,6 +117,16 @@ namespace
CV_Assert(mask.empty() || (mask.size() == img.size() && mask.type() == CV_8UC1));
CV_Assert(nOctaves > 0 && nOctaveLayers > 0);
CV_Assert(TargetArchs::builtWith(GLOBAL_ATOMICS) && DeviceInfo().supports(GLOBAL_ATOMICS));
const int min_size = calcSize(nOctaves - 1, 0);
CV_Assert(img_rows - min_size >= 0);
CV_Assert(img_cols - min_size >= 0);
const int layer_rows = img_rows >> (nOctaves - 1);
const int layer_cols = img_cols >> (nOctaves - 1);
const int min_margin = ((calcSize((nOctaves - 1), 2) >> 1) >> (nOctaves - 1)) + 1;
CV_Assert(layer_rows - 2 * min_margin > 0);
CV_Assert(layer_cols - 2 * min_margin > 0);
maxFeatures = min(static_cast<int>(img.size().area() * surf.keypointsRatio), 65535);
maxCandidates = min(static_cast<int>(1.5 * maxFeatures), 65535);
@ -279,20 +304,6 @@ void cv::gpu::SURF_GPU::uploadKeypoints(const vector<KeyPoint>& keypoints, GpuMa
namespace
{
int calcSize(int octave, int layer)
{
/* Wavelet size at first layer of first octave. */
const int HAAR_SIZE0 = 9;
/* Wavelet size increment between layers. This should be an even number,
such that the wavelet sizes in an octave are either all even or all odd.
This ensures that when looking for the neighbours of a sample, the layers
above and below are aligned correctly. */
const int HAAR_SIZE_INC = 6;
return (HAAR_SIZE0 + HAAR_SIZE_INC * layer) << octave;
}
int getPointOctave(float size, const CvSURFParams& params)
{
int best_octave = 0;