文章基本信息

标题：Impact of Quantization Matrix on the Performance of JPEG
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作者：Mr.S. V. Viraktamath ; Dr. Girish V. Attimarad
期刊名称：International Journal of Future Generation Communication and Networking
印刷版ISSN：2233-7857
出版年度：2011
卷号：4
期号：3
出版社：SERSC
摘要：With the increase in imaging sensor resolution, the captured images are becoming larger and larger, which requires higher image compression ratio. Discrete Cosine Transform (DCT) quantization and entropy encoding are the two main steps in the Joint Photographic Experts Group (JPEG) image Compression standard. In order to investigate the impact of quantization matrix on the performance of JPEG, a sample DCT was calculated, images were quantized using several quantization matrices. The results are compared with the standard quantization matrix. The performance of JPEG is also analyzed for different images with different compression factors.
关键词：Compression; Discrete Cosine Transform (DCT); JPEG; Quantization.