公开(公告)号：US20200014880A1

公开(公告)日：2020-01-09

申请号：US16575729

申请日：2019-09-19

申请人： Panasonic Intellectual Property Corporation of America

发明人： Masayuki KOZUKA ,  Takashi HIGASHIDA ,  Yoshihiro MORI ,  Haruyasu HIRAKAWA ,  Tadamasa TOMA

IPC分类号： H04N5/57 ,  H04N11/24 ,  H04N5/20 ,  H04N9/64

摘要： Provided is a display method of displaying, on a display device, video of video data where luminance of video is defined by a first EOTF corresponding to HDR. The method includes: acquiring the video data; performing first conversion where the luminance of the video is converted to a luminance corresponding to a dynamic range of a third EOTF, where, with regard to a second EOTF that is part of the first EOTF and is the part of a luminance range where the peak luminance indicated by the peak luminance information included in the acquired video data is maximum luminance, the dynamic range of luminance of the second EOTF is reduced with maximum luminance of the second EOTF matching displayable luminance of the display device, while maintaining the relative relationship of luminance of the second EOTF; and displaying the video on the display device using the result of the first conversion.

公开(公告)号：US20190340734A1

公开(公告)日：2019-11-07

申请号：US16512846

申请日：2019-07-16

申请人： Panasonic Intellectual Property Corporation of America

发明人： Masayuki KOZUKA ,  Takashi HIGASHIDA ,  Yoshihiro MORI ,  Haruyasu HIRAKAWA ,  Tadamasa TOMA ,  Hirokazu NAKANISHI

IPC分类号： G06T5/00 ,  H04N21/435 ,  G09G5/00 ,  G09G5/10 ,  H04N9/69 ,  H04N21/431 ,  G06T5/50

摘要： Provided is a display method of displaying, on a display device, video of video data where luminance of video is defined by a first EOTF indicating a correlation of HDR luminance and code values. The method includes: acquiring the video data; performing, regarding each of multiple pixels making up the video in the acquired video data, first determining of determining whether luminance of that pixel exceeds a first predetermined luminance; performing, regarding each of the multiple pixels, dual tone mapping where luminance of that pixel is reduced by a different format in a case of the luminance of the pixel being found to exceed the first predetermined luminance from the first determining, and a case of the luminance of the pixel being found to be equal to or lower than the first predetermined luminance; and displaying the video on the display device using the results of the dual tone mapping.