A quaternion gradient operator for color image edge detection.
Lianghai JinEnmin SongLei LiXiang LiPublished in: ICIP (2013)
Keyphrases
- color texture
- gradient information
- color images
- color information
- color texture segmentation
- photometric invariant
- fourier transform
- color space
- image indexing and retrieval
- multiscale
- color quantization
- unsupervised segmentation
- human vision
- color features
- wavelet transform
- color image segmentation
- color segmentation
- color constancy
- digital images
- gradient direction
- gradient domain
- color matching
- multiresolution
- computer vision