公开(公告)号：MX379447B

公开(公告)日：2025-03-11

申请号：MX2020000535

申请日：2017-11-16

Applicant: PANASONIC IP CORP AMERICA

Inventor： HIRAKAWA HARUYASU ,  NAKANISHI HIROKAZU ,  KOZUKA MASAYUKI ,  TOMA TADAMASA ,  HIGASHIDA TAKASHI ,  MORI YOSHIHIRO

IPC: H04N21/431 ,  H04N21/435

Abstract: Se proporciona un método de presentación visual para presentar visualmente, en un dispositivo de presentación visual, video de datos de video donde la luminancia de video está definida por una primera EOTF (función de transferencia electro-óptica) que indica una correlación de luminancia de HDR (alto intervalo dinámico) y valores de código. El método incluye: adquirir los datos de video; llevar a cabo, con respecto a cada uno de una pluralidad de pixeles que componen el video incluido en los datos de video adquiridos, primera determinación de determinar si la luminancia de ese pixel excede o no una primera luminancia predeterminada; llevar a cabo, con respecto a cada uno de la pluralidad de pixeles, asignación de tonos dual donde la luminancia de ese pixel se reduce por un formato diferente en caso de que se encuentre que la luminancia del pixel supera la primera luminancia predeterminada como resultado de la primera determinación, y en caso de que se encuentre que la luminancia del pixel es igual o inferior a la primera luminancia predeterminada; y presentar visualmente el video en el dispositivo de presentación visual usando los resultados de la asignación de tonos dual.

公开(公告)号：EP3297288A4

公开(公告)日：2018-03-21

申请号：EP16792319

申请日：2016-02-08

Applicant: PANASONIC IP CORP AMERICA

Inventor： KOZUKA MASAYUKI ,  HIGASHIDA TAKASHI ,  MORI YOSHIHIRO ,  HIRAKAWA HARUYASU ,  TOMA TADAMASA

IPC: H04N21/431 ,  H04N21/435

CPC classification number: H04N5/57 ,  H04N5/20 ,  H04N9/646 ,  H04N11/002 ,  H04N21/431 ,  H04N21/435

Abstract: 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 (Electro-Optical Transfer Function) corresponding to HDR (High Dynamic Range). 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 the maximum luminance, the dynamic range of luminance of the second EOTF is reduced with the maximum luminance of the second EOTF matching the 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：EP3306944A4

公开(公告)日：2018-06-06

申请号：EP16799494

申请日：2016-02-08

Applicant: PANASONIC IP CORP AMERICA

Inventor： KOZUKA MASAYUKI ,  HIGASHIDA TAKASHI ,  MORI YOSHIHIRO ,  HIRAKAWA HARUYASU ,  TOMA TADAMASA ,  NAKANISHI HIROKAZU

IPC: H04N21/431 ,  G09G5/00 ,  G09G5/10 ,  H04N9/69 ,  H04N21/435

CPC classification number: G06T5/009 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20208 ,  G09G5/00 ,  G09G5/10 ,  H04N9/69 ,  H04N21/431 ,  H04N21/435

Abstract: 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 (Electro-Optical Transfer Function) indicating a correlation of HDR (High Dynamic Range) luminance and code values. The method includes: acquiring the video data; performing, regarding each of a plurality of pixels making up the video included in the acquired video data, first determining of determining whether or not luminance of that pixel exceeds a first predetermined luminance; performing, regarding each of the plurality of 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 as a result of 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.