Contrast enhancement using completely overlapped uniformly decrementing sub-block histogram equalization for less controlled illumination variation.
Shree Devi GanesanMunir RabbaniPublished in: Int. Arab J. Inf. Technol. (2019)
Keyphrases
- histogram equalization
- contrast enhancement
- illumination variations
- image enhancement
- face images
- gray level
- face recognition
- object tracking
- illumination conditions
- image matching
- image contrast enhancement
- multiscale
- image contrast
- visual quality
- sparse representation
- partial occlusion
- enhanced image
- color images
- lighting conditions
- gray scale
- tone mapping
- wavelet transform
- dynamic range compression
- transfer function
- human faces
- edge detection
- input image
- image data
- feature vectors
- viewpoint
- feature space
- high quality