Haar-like feature

Haar-like features are a type of simple rectangular feature used in computer vision, particularly in object detection tasks, such as face detection. They were popularized by the Viola-Jones object detection framework, which utilizes these features for rapid detection of objects in images. ### Characteristics of Haar-like Features: 1. **Structure**: Haar-like features are essentially the difference in intensity between rectangular regions of an image. They are computed as differences of sums of pixels in these regions.