Abstract
Nowadays, most of people are using image for communication. And also, SNS (Social Network Service) which is used by young man have to be loaded images. So, we propose a new differential compression method for high-speed transfer. In this proposed method, the feature which is the encoding process according to subjectively image quality can be demonstrated. Human studies have shown that most of people have the interest about special area. Using the individuality, the relatively high quality can be obtained at the special area and the relatively low quality can be obtained at the other area in encoding process. In order to use these characteristics, the image is separated simple and complex block using 8x8 block standard deviation. And also, we have applied low compression rate and high compression rate to each region. The experimental results are demonstrated that proposed differential scheme can achieve better image quality at the high compression ratio. The proposed method is possible to maintain a high quality by differential compression of images. And then, we can apply to MPEC and H.26X.
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