McDermott Will and Emery LLP
Video display system and video display method
A video display system includes: a tone mapping processor that performs a tone mapping process of converting a luminance of a video by using conversion characteristics according to a maximum luminance of the video; and a display that displays the video that has undergone the tone mapping process. The tone mapping processor switches between a first tone mapping process of dynamically changing the conversion characteristics according to a time-depend change in the maximum luminance of the video and a second tone mapping process that is performed using constant conversion characteristics irrespective of the time-depend change in the maximum luminance of the video. When the tone mapping process used is switched from the second tone mapping process to the first tone mapping process, the conversion characteristics used is changed gradually or stepwise from the constant conversion characteristics to dynamically changing conversion characteristics over a plurality of frames.
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
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Masaya Yoshihiro Hiroshi Yoshiichiro Kazuhiko Toshiroh Takeshi Masayuki
Yamamoto Mori Yahata Kashiwagi Kouno Nishio Hirota Kozuka