Method and device of converting a high dynamic range version of a picture to a standard-dynamic-range version of said picture

A device for converting a High-Dynamic-Range (HDR) version of a picture to a Standard-Dynamic-Range (SDR) version of the picture, comprising:

• a memory for storing a program;
• and
• a processor configured to:
• obtain a first information data that indicates the presence of color mapping parameters used for converting the HDR version of the picture to the SDR version of the picture;
• obtain a second information data that indicates whether the device is configured to convert the HDR version of the picture to the SDR version of the picture by taking into account the color mapping parameters;
• obtain a third information data that indicates whether converting the HDR version of the picture to the SDR version of the picture without taking into account the color mapping parameters is inhibited;
• and
• convert the HDR version of the picture to the SDR version of the picture according to the obtained information data.

A non-transitory processor-readable medium having stored therein instructions for causing a processor to perform at least the following actions:

• obtaining a first information data that indicates the presence of color mapping parameters used for converting a High-Dynamic-Range (HDR) version of a picture to a Standard-Dynamic-Range (SDR) version of the picture;
• obtaining a second information data that indicates whether a device is configured to convert the HDR version of the picture to the SDR version of the picture by taking into account the color mapping parameters;
• obtaining a third information data that indicates whether converting the HDR version of the picture to the SDR version of the picture without taking into account the color mapping parameters is inhibited;
• and
• converting the HDR version of the picture to the SDR version of the picture according to the obtained information data.