ZTE Communications ›› 2015, Vol. 13 ›› Issue (2): 36-40.DOI: 10.3969/j.issn.1673-5188.2015.02.007
Ping Lu1, Xia Jia1, Hengliang Zhu2, Ming Liu1, Shouhong Ding2, and Lizhuang Ma2
Ping Lu1, Xia Jia1, Hengliang Zhu2, Ming Liu1, Shouhong Ding2, and Lizhuang Ma2
摘要: In this paper, we propose a novel image recompression framework and image quality assessment (IQA) method to efficiently recompress Internet images. With this framework image size is significantly reduced without affecting spatial resolution or perceptible quality of the image. With the help of IQA, the relationship between image quality and image evaluation scores can be quickly established, and the optimal quality factor can be obtained quickly and accurately within a pre determined perceptual quality range. This process ensures the image’s perceptual quality, which is applied to each input image. The test results show that, using the proposed method, the file size of images can be reduced by about 45%-60% without affecting their visual quality. Moreover, our new image-recompression framework can be used in to many different application scenarios.