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Volume: 16 | Article ID: art00067_2
Occurrence Condition of False Contour in JPEG and Its Improvement
  DOI :  10.2352/ISSN.2169-4451.2000.16.1.art00067_2  Published OnlineJanuary 2000

The performance of recent digital cameras, printers, scanners and other input-output devices are wonderful. Therefore, the quality of a digital image is improved remarkably. As a result, the quality of the compressed image has come to be focused on. False contours may appear in the decoded image when a digital image is compressed with JPEG (Joint Photographic Expert Group) compression algorithm. There were many cases we are not able to perceive false contours when we used the input-output devices with certain noise level. We reported that false contours appear by the accuracy improvement of the output devices with the research in the IS&T's NIP158.In this research, we studied the condition that false contours are seemed to the eyesore from both side of compressibility and the noise level of printer. We tried some experiments with various kinds of printer.

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Ken'ichiroh Murata, Tsutomu Shohdohji, Yasushi Hoshino, "Occurrence Condition of False Contour in JPEG and Its Improvementin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP16),  2000,  pp 686 - 689,

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