Image processing method and apparatus and terminal device

The method of 1, wherein:

• the first format is standard dynamic range (SDR) and the second format is high dynamic range (HDR);
• the first format is HDR and the second format is SDR;
• the first format is HDR of a hybrid log-gamma (HLG) standard and the second format is HDR of a perceptual quantizer (PQ) standard;
• or
• the first format is HDR of a PQ standard and the second format is HDR of an HLG standard.

An apparatus, which is a processing device or included in the processing device, comprising:

• a memory configured to store one or more programs;
• and
• a processor coupled to the memory and configured to execute the one or more programs to cause the apparatus to be configured to:
• receive video data having a first format, wherein the first format is an image format corresponding to standard dynamic range (SDR) or high dynamic range (HDR), wherein the first format is inconsistent with a second format supported by a first interface mode being used between the processing device and a display device of a display system, and wherein the first interface mode is a high definition multimedia interface (HDMI) operation mode;
• and
• output converted video data after converting the first format of the video data into the second format based on the first interface mode.

An apparatus, which is a processing device or included in the processing device, comprising:

• a memory configured to store one or more programs;
• and
• a processor coupled to the memory and configured to execute the one or more programs to cause the apparatus to:
• receive first video data having a first format, wherein the first format is an image format corresponding to standard dynamic range (SDR), wherein a second format supported by a first interface mode being used between the processing device and a display device of a display system is an image format corresponding to high dynamic range (HDR), and wherein the first interface mode is a high definition multimedia interface (HDMI) operation mode;
• output first converted video data after converting the first format of the first video data into the second format based on the first interface mode;
• receive second video data having the second format, wherein the first format is now supported by a second interface mode being used between the processing device and the display device;
• and
• output second converted video data after converting the second format of the second video data into the first format.