Increasing image compression rate using steganography
作者：
Highlights：
• Two new image compression algorithms based on DCT-JPEG and DWT-JPEG, called Stego-JPEG (DCT) and Stego-JPEG (DWT), are investigated.
• The key idea is to compress a block of an image using lossy JPEG, and then hide the resulting bits into subsequent blocks.
• Increasing compression ratio is improved with high quality for both Stego-JPEG (DCT) and Stego-JPEG (DWT).
• For color images, Stego-JPEG (DCT) and Stego-JPEG (DWT) have more compression ratio than grayscale also decrease of PSNR is better than grayscale.
摘要
•Two new image compression algorithms based on DCT-JPEG and DWT-JPEG, called Stego-JPEG (DCT) and Stego-JPEG (DWT), are investigated.•The key idea is to compress a block of an image using lossy JPEG, and then hide the resulting bits into subsequent blocks.•Increasing compression ratio is improved with high quality for both Stego-JPEG (DCT) and Stego-JPEG (DWT).•For color images, Stego-JPEG (DCT) and Stego-JPEG (DWT) have more compression ratio than grayscale also decrease of PSNR is better than grayscale.
论文关键词：Steganography,DCT,DWT,JPEG
论文评审过程：Available online 24 June 2013.
论文官网地址：https://doi.org/10.1016/j.eswa.2013.06.008
