Exploring DCT coefficient quantization effect for image tampering localization.
Wei WangJing DongTieniu TanPublished in: WIFS (2011)
Keyphrases
- tampering detection
- image data
- image features
- image content
- image classification
- single image
- multiscale
- input image
- image analysis
- image segmentation
- image retrieval
- tamper detection
- test images
- image representation
- object localization
- image regions
- quantization error
- color quantization
- image authentication
- accurate localization
- quantization step
- forgery detection
- edge detection
- image processing
- segmentation algorithm
- pixel values
- reverse engineering
- block coding
- quantization noise