GridKeyPointFilter Class Reference

Places features into grid cells and discards the weakest features in each cell. More...

Public Member Functions
void	filter (std::vector< KeyPoint > *keypoints)
	GridKeyPointFilter (int img_width, int img_height, int bucket_width, int bucket_height, int max_keypoints_per_bucket)

Detailed Description

Places features into grid cells and discards the weakest features in each cell.

Constructor & Destructor Documentation

GridKeyPointFilter ( int  img_width, int  img_height, int  bucket_width, int  bucket_height, int  max_keypoints_per_bucket  )

inline

Construct a keypoint filter.

Conceptually, lays down a grid over the image and sorts keypoints into a grid cell based on their image locations. Then removes the weakest keypoints in each cell (using the Keypoint::score field) until there are at most max_keypoints_per_bucket in each grid cell.

Parameters

img_width	the width of the input image.
img_height	the height of the input image.
bucket_width	the width of each bucket.
bucket_height	the height of each bucket.
max_keypoints_per_bucket	the maximum number of keypoints in each grid cell after filtering.

Member Function Documentation

void filter

(

std::vector< KeyPoint > *

keypoints

)

filters the specified vector of keypoints.

Parameters

keypoints

input/output parameter. On output, the weakest keypoints in each grid cell will have been removed from this vector.

---

The documentation for this class was generated from the following file:

• grid_filter.hpp