DCT & Quantization based Multi-Layer Data Hiding in RGB Images

Project Description

A new lossless image compression scheme based on the DCT was developed. This method caused a significant reduction in entropy, thus making it possible to achieve compression using a traditional entropy coder. The method performed well when compared to the popular lossless JPEG method. Future work will focus on finding an efficient hardware implementation, possibly taking advantage of commonality between the new method and the existing DCT-based lossy JPEG method.DCT converts the spatial image representation into a frequency map: the low-order or DC"" term represents the average value in the block