minor addition to SURF doc (#188)

14 years ago · 5eae542769
parent 354be115f2
commit 5eae542769
1 changed files with 4 additions and 1 deletions
--- a/doc/features2d_detection_description.tex
+++ b/doc/features2d_detection_description.tex
@ -414,7 +414,10 @@ public:
    // detects keypoints using fast multi-scale Hessian detector
    void operator()(const Mat& img, const Mat& mask,
                    vector<KeyPoint>& keypoints) const;
-    // detects keypoints and computes the SURF descriptors for them
+    // detects keypoints and computes the SURF descriptors for them;
+    // output vector "descriptors" stores elements of descriptors and has size 
+    // equal descriptorSize()*keypoints.size() as each descriptor is 
+    // descriptorSize() elements of this vector.
    void operator()(const Mat& img, const Mat& mask,
                    vector<KeyPoint>& keypoints,
                    vector<float>& descriptors,