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Forbid incorrect patchSize values in ORB

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This commit is contained in:
Andrey Kamaev 2012-08-15 16:50:02 +04:00
parent b0927397e9
commit 859ee6087c
1 changed files with 4 additions and 2 deletions

6
modules/features2d/src/orb.cpp

@ -633,7 +633,7 @@ static void computeKeyPoints(const vector<Mat>& imagePyramid,
// pre-compute the end of a row in a circular patch
int halfPatchSize = patchSize / 2;
vector<int> umax(halfPatchSize + 1);
vector<int> umax(halfPatchSize + 2);
int v, v0, vmax = cvFloor(halfPatchSize * sqrt(2.f) / 2 + 1);
int vmin = cvCeil(halfPatchSize * sqrt(2.f) / 2);
@ -643,7 +643,7 @@ static void computeKeyPoints(const vector<Mat>& imagePyramid,
// Make sure we are symmetric
for (v = halfPatchSize, v0 = 0; v >= vmin; --v)
{
while (umax[v0] == umax[v0 + 1])
while (umax[v0] == umax[v0 + 1])
++v0;
umax[v] = v0;
++v0;
@ -723,6 +723,8 @@ static void computeDescriptors(const Mat& image, vector<KeyPoint>& keypoints, Ma
void ORB::operator()( InputArray _image, InputArray _mask, vector<KeyPoint>& _keypoints,
OutputArray _descriptors, bool useProvidedKeypoints) const
{
CV_Assert(patchSize >= 2);
bool do_keypoints = !useProvidedKeypoints;
bool do_descriptors = _descriptors.needed();