Recognition of Image Authenticity Using Significant DCT Coefficients Quantization.
Chin-Chen ChangJun-Chou ChuangTung-Shou ChenPublished in: Informatica (Slovenia) (2002)
Keyphrases
- dct coefficients
- image content
- jpeg compressed images
- input image
- image data
- image features
- image blocks
- discrete cosine transformation
- digital images
- jpeg images
- object recognition
- dct domain
- quantization step
- low frequency
- transform domain
- discrete cosine transform
- image segmentation
- multiscale
- pixel domain
- similarity measure
- feature extraction
- image representation
- image quality
- jpeg compression
- blocking artifacts
- compressed domain
- bitstream
- test images
- high frequency
- bit budget
- high resolution
- computational complexity