An improved first quantization matrix estimation for nonaligned double compressed JPEG images.

Heng Yao Hongbin Wei Chuan Qin Xinpeng Zhang

Published in: Signal Process. (2020)

Keyphrases

jpeg images
file size
compressed domain
compression algorithm
dct coefficients
compressed images
spatial domain
discrete cosine transform
data hiding
high quality
dct domain
motion vectors
denoising
frequency domain