ADAPTIVE CHROMA SUBSAMPLING BASED ON DISPLAY BRIGHTNESS

• US 20180098041A1
• Filed: 09/30/2016
• Published: 04/05/2018
• Est. Priority Date: 09/30/2016
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Lawrence, Sean J.
• Application Number:
  US15/282,639
• Publication Number:
  US 20180098041A1
• Time in Patent Office: Days
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 2380/02 Flexible displays
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H04N 21/2385 Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 23/84 for processing colour signals
• CPC Class Codes: H04N 9/64 Circuits for processing colour signals H04N9/77 takes precedence; camera processing pipelines for processing colour signals H04N23/84

Abstract

An apparatus is described herein. The apparatus includes comprising a brightness capture mechanism and a controller. The brightness capture mechanism is to obtain ambient brightness and display brightness. The controller is to determine a chroma subsampling scheme of a video based on the ambient brightness and display brightness according to a human visual system response, wherein the controller is to adapt a chroma subsampling ratio based on the ambient brightness and display brightness.

Claims

1. An apparatus, comprising:

a brightness capture mechanism to obtain ambient brightness and display brightness;

a controller to determine a chroma subsampling scheme of media content based on the ambient brightness and display brightness according to a human visual system response, wherein the controller is to adapt a chroma subsampling ratio based on the ambient brightness and display brightness.

2. The apparatus of claim 1, wherein a bandwidth of the media content for wireless transmission is reduced according to the subsampling ratio.

3. The apparatus of claim 1, wherein the ambient brightness is brightness from lighting in a space that results from light sources in the space other than a display device.

4. The apparatus of claim 1, wherein the display brightness is brightness from lighting in a space that results from a display device.

5. The apparatus of claim 1, wherein the brightness capture mechanism is a plurality of sensors.

6. The apparatus of claim 1, wherein the brightness capture mechanism is a camera, an RGB sensor, an ambient light senor, or any combination thereof.

7. The apparatus of claim 1, wherein adapting the chroma subsampling ratio comprises a delay based on a delay in a vision change of the human visual system.

8. The apparatus of claim 1, wherein adapting the chroma subsampling ratio comprises a delay that is reflective of the best or reasonably good perceptual response to brightness change for humans.

9. The apparatus of claim 1, wherein adapting the chroma subsampling ratio comprises changing the chroma subsampling ratio instantly in response to a change in ambient brightness and display brightness.

10. The apparatus of claim 1, wherein the adapted chroma subsampling ratio is determined at a receiver and transmitted to a display where the media content is to be decoded.

11. The apparatus of claim 1, wherein the apparatus is a wireless set top box, a cable box, a mobile device, a computing device, a tablet, a gaming console, or any combination thereof.

12. A method, comprising:

obtaining ambient brightness and display brightness from a receiver;

determining a chroma subsampling scheme based on the ambient brightness and display brightness; and

modifying a chroma subsampling ratio based on the chroma subsampling scheme.

13. The method of claim 12, comprising transmitting the chroma subsampling ratio to be used to decode a media content encoded using the chroma subsampling ratio.

14. The method of claim 12, wherein a bandwidth used to transmit a video is reduced according to the subsampling ratio.

15. The method of claim 14, wherein a display used to render the video comprises an ambient light sensor, and the chroma subsampling scheme is solely based on the display brightness.

16. A system, comprising:

a display;

a radio;

a memory that is to store instructions and that is communicatively coupled to the display; and

a processor communicatively coupled to the radio and the memory, wherein when the processor is to execute the instructions, the processor is to;

receive a chroma subsampling scheme based on an ambient brightness and a display brightness;

receive a media content encoded based on the chroma subsampling scheme; and

decode the media content using a chroma subsampling ratio based on the chroma subsampling scheme.

17. The system of claim 16, wherein a bandwidth of the media content for wireless transmission is reduced according to the subsampling ratio.

18. The system of claim 16, wherein reducing a volume of a bandwidth of the media content for wireless transmission is a result of transmitting only a chromatic content that can be perceived by humans.

19. The system of claim 16, wherein the ambient brightness is brightness from lighting in a space that results from light sources in the space other than the display device.

20. The system of claim 16, wherein the display brightness is brightness from lighting in a space that results from a display device.

21. The system of claim 16, wherein the ambient brightness and the display brightness is obtained via a plurality of sensors.

22. The system of claim 16, wherein the ambient brightness and the display brightness is obtained via a camera, an RGB sensor, an ambient light senor, or any combination thereof.

23. At least one non-transitory machine readable medium comprising a plurality of instructions that, in response to being executed on a computing device, cause the computing device to:

obtain ambient brightness and display brightness from a receiver;

determine a chroma subsampling scheme based on the ambient brightness and display brightness; and

modify a chroma subsampling ratio based on the chroma subsampling scheme.

24. The computer readable medium of claim 23, comprising transmitting a video with a modified chroma subsampling ratio using wireless display (WiDi).

25. The computer readable medium of claim 23, wherein the modified chroma subsampling ratio results in rendering only a chromatic content that can be perceived by humans.