著者

森村 淳 吾妻 健夫 魚森 謙也

出版者

一般社団法人映像情報メディア学会

雑誌

映像情報メディア学会誌 : 映像情報メディア (ISSN:13426907)

巻号頁・発行日

vol.51, no.2, pp.228-234, 1997-02-20

被引用文献数

11 2

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We have developed a wide-dynamic-range image processing technology that compresses video signal level while preserving image contrast. Applying this technology to wide-dynamic-range images improves the contrast of the images which are displayed on a conventional display. In this paper we discuss the S/ N ratio of wide-dynamic-range images which are synthesized from two different exposure-time images. In order to display wide-dynamic-range images on conventional displays with high contrast, we propose video signal expression which is not in proportion to luminance. This new expression of video signal is obtained from the divided region and edge base histogram equalization process.