Robust steganography is a technique of hiding secret messages in images so that the message can be recovered after additional image processing. One most popular processing operations JPEG recompression. Unfortunately, today's steganographic methods addressing this issue only provide probabilistic guarantee recovering and are consequently not errorless. That unacceptable since even single unexpe...

The standard JPEG format is almost the optimum format in image compression. The compression ratio in JPEG sometimes reaches 30:1. The compression ratio of JPEG could be increased by embedding the Five Modulus Method (FMM) into the JPEG algorithm. The novel algorithm gives twice the time as the standard JPEG algorithm or more. The novel algorithm was called FJPEG (Five-JPEG). The quality of the ...

Although significant progress has been achieved recently in automatic learning of steganographic cost, the existing methods designed for spatial images cannot be directly applied to JPEG which are more common media daily life. The difficulties migration mainly caused by characteristics <te...

JPEG, görüntü sıkıştırma için en yaygın kullanılan yöntemlerin başında gelmektedir. JPEG işleminde kuantalama adımında tablosu önemli bir rol oynamaktadır. Kuantalama görüntünün kalitesini ve miktarını ölçüde belirler. Bu nedenle tablosunun oluşturulması optimizasyon problemi olarak görülmektedir. makalede daha etkili tabloları oluşturulabilmesi oran-bozulma yaklaşımı, insan görsel sistemi yakl...