• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.8 no.1
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• pp.19-24
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• 2008

This paper presents a new JPEG quantization table design method for mobile images in handset. From the characteristics of the mobile images, we propose a modeling method of the quantization table and select the optimized pre-emphasis factor from various sets of $240{\times}320$ images. From the experiment, we show that the performance is improved in the sense of bpp and PSNR, applying the proposed method.