Harris affine region detector
| Feature detection | 
|---|
| Edge detection | 
| Corner detection | 
| Blob detection | 
| Ridge detection | 
| Hough transform | 
| Structure tensor | 
| Affine invariant feature detection | 
| Feature description | 
| Scale space | 
In the fields of computer vision and image analysis, the Harris affine region detector belongs to the category of feature detection. Feature detection is a preprocessing step of several algorithms that rely on identifying characteristic points or interest points so to make correspondences between images, recognize textures, categorize objects or build panoramas.