Image processing apparatus, image processing method and multi-screen display

• US 10,699,674 B2
• Filed: 12/28/2018
• Issued: 06/30/2020
• Est. Priority Date: 12/28/2017
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jeong, Young Hoon, Lim, Jae Moon, Kim, Joseph, Zhao, Chun
• Primary Examiner(s): Flora, Nurun N
• Application Number:
  US16/235,775
• Publication Number:
  US 20190206364A1
• Time in Patent Office: 550 Days
• Field of Search: None
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G06T 5/92 based on global image properties
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/0271 Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/066 for control of contrast
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2360/16 Calculation or use of calculated indices related to luminance levels in display data
• CPC Class Codes: G09G 3/2096 Details of the interface to the display terminal specific for a flat panel suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 5/10 Intensity circuits

Abstract

An image processing apparatus for minimizing a collective amount of power consumed by a plurality of display apparatuses of a multi-screen system to display an image of the multi-screen system, and for optimizing hue and luminance of the image of the multi-screen system.

Claims

1. An image processing apparatus comprising:

a communicator configured to communicate with a plurality of display apparatuses that collectively display an image of a multi-screen system; and

a controller configured to;

process image data to be displayed as the image of the multi-screen system on the plurality of display apparatuses,

wherein the controller is configured process the image data by;

applying a tone mapping curve that is generated based on a maximum of amount of power, among amounts of power respectively consumed by the plurality of display apparatuses to display respective portions of the image of the multi-screen system thereon,

compensating for hue of the image data, and

increasing maximum luminance of the image data, and

control the communicator to transmit processed image data to the plurality of display apparatuses to display the image of the multi-screen system.

2. The image processing apparatus according to claim 1, wherein the controller is configured to generate the tone mapping curve such that a total of the amounts of the power consumed by the plurality of display apparatuses to display the image of the multi-screen system is minimized.

3. The image processing apparatus according to claim 1, wherein the controller is configured to generate the tone mapping curve such that a sum of the total of the amounts of the power consumed by the plurality of display apparatuses to display the image of the multi-screen system and the maximum amount of power consumed is minimized.

4. The image processing apparatus according to claim 1, wherein the controller is configured to generate the tone mapping curve such that a sum of the total of the amounts of the power consumed by the plurality of display apparatuses, to which a first weight is applied, and the maximum amount power, to which a second weight different from the first weight is applied, becomes a minimum value, and

the first weight and the second weight are determined based on at least one of saturation and luminance of the image data.

5. The image processing apparatus according to claim 1, wherein the controller is configured to generate the tone mapping curve such that a sum of a quantified similarity between the tone mapping curve and an identity curve, a quantified similarity between the tone mapping curve and a contrast ratio enhancing curve, a total of the amounts of the power consumed by the plurality of display apparatuses, and the amounts of the power consumed by the plurality of display apparatuses is minimized.

6. The image processing apparatus according to claim 1, wherein the controller is further configured to compensate for hue of the image data by increasing saturation of the image data.

7. The image processing apparatus according to claim 1, wherein the controller is further configured to increase the maximum luminance of the image data based on the maximum amount of power.

8. The image processing apparatus according to claim 1, wherein the controller is further configured to determine a current gain of driving current of the plurality of display apparatuses based on the maximum amount of power.

9. An image processing method for processing image data to be displayed by a plurality of display apparatuses that collectively display an image of a multi-screen system, the method comprising:

generating a tone mapping curve based on a maximum of amount of power, among amounts of power respectively consumed by the plurality of display apparatuses to display respective portions of the image of the multi-screen system thereon;

applying the tone mapping curve to the image data;

compensating for hue of the image data;

increasing maximum luminance of the image data; and

transmitting processed image data to the plurality of display apparatuses to display the image of the multi-screen system.

10. The image processing method according to claim 9, wherein the generating comprises generating the tone mapping curve such that a sum of the total of the amounts of the power consumed by display apparatuses to display the image of the multi-screen system and the maximum amount of power is minimized.

11. The image processing method according to claim 9, wherein the generating of comprises generating the tone mapping curve such that a sum of the total of the amounts of the power consumed by display apparatuses, to which a first weight is applied, and the maximum amount of power, to which a second weight different from the first weight is applied, is minimized, and

the first weight and the second weight are determined based on at least one of saturation and luminance of the image data.

12. The image processing method according to claim 9, wherein the generating comprises generating the tone mapping curve such that a sum of a quantified similarity between the tone mapping curve and an identity curve, a quantified similarity between the tone mapping curve and a contrast ratio enhancing curve, a total of the amounts of the power consumed by the plurality of display apparatuses, and the amounts of the power consumed by the plurality of display apparatuses is minimized.

13. The image processing method according to claim 9, wherein the compensating for the hue of the image data comprises increasing saturation of the image data.

14. The image processing method according to claim 9, wherein the compensating for the hue of the image data comprises:

increasing saturation of the image data based on at least one of saturation, hue, and luminance of the image data; and

maintaining luminance of the image data.

15. The image processing method according to claim 9, wherein the increasing of the maximum luminance of the image data comprises increasing maximum luminance of the image data based on the maximum amount of power.

16. The image processing method according to claim 9, wherein the increasing of the maximum luminance of the image data comprises determining a current gain of driving current of the plurality of display apparatuses, based on the maximum amount of power.

17. A multi-screen display comprising:

a plurality of display apparatuses; and

an image processing apparatus configured to process image data, and transmit the processed image data to the plurality of display apparatuses to collectively display an image of the multi-screen display,

wherein the image processing apparatus is configured to apply a tone mapping curve generated such that a total of amounts of power respectively consumed by the plurality of display apparatuses to display respective portions of the image of the multi-screen display thereon is minimized, and to compensate for hue of the image data, and

wherein each of the plurality of display apparatuses increases maximum luminance of the image data.

18. The multi-screen display according to claim 17, wherein the image processing apparatus is configured to generate the tone mapping curve such that a sum of the total of the amounts of the power consumed by the plurality of display apparatuses to display the image of the multi-screen system and a maximum of amount of power, among the amounts of power respectively consumed by the plurality of display apparatuses to display respective portions of the image of the multi-screen display thereon, is minimized.

19. The multi-screen display according to claim 17, wherein the image processing apparatus is configured to compensate for hue of the image data by increasing saturation of the image data.

20. The multi-screen display according to claim 17, wherein each of the plurality of display apparatuses is configured to increase maximum luminance of the image data based on a maximum of the amounts of the power consumed by the plurality of display apparatuses.