Image processing device and method for image processing the same

• US 10,389,916 B2
• Filed: 10/19/2017
• Issued: 08/20/2019
• Est. Priority Date: 11/25/2016
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Saruhashi, Yasuo
• Primary Examiner(s): Lhymn, Sarah
• Application Number:
  US15/787,762
• Publication Number:
  US 20180152602A1
• Time in Patent Office: 670 Days
• Field of Search: 345581, 345589, 345591, 345592, 345593
• CPC Class Codes: G06T 11/001 Texturing; Colouring; Generation of texture or colour inpainting G06T5/77
• CPC Class Codes: G06T 11/60 Editing figures and text; Combining figures or text
• CPC Class Codes: G06T 2207/10024 Color image
• CPC Class Codes: G06T 2207/20021 Dividing image into blocks, subimages or windows
• CPC Class Codes: G06T 2207/30261 Obstacle
• CPC Class Codes: G06T 7/11 Region-based segmentation
• CPC Class Codes: G06T 7/194 involving foreground-background segmentation
• CPC Class Codes: H04N 1/6008 with primary colour signals, e.g. RGB or CMY(K)

Abstract

An image processing device including an area dividing circuit configured to divide an image into a plurality of blocks, convert input data showing the image to data including color information, allocate data including the color information into each of the blocks, and output data of the block and image data allocated to each of the blocks, a focus area judgment circuit configured to divide data of the block into a first image area and a second image area, and output the divided area data, and an area dedicated color conversion RGB value calculation circuit configured to compare the image data and the area data, in the case where the image data is included in the first image area, calculate first color conversion data from an intensity coefficient, wherein the image data includes a first value, a second value and a third value.

Claims

1. An image processing device comprising:

an area dividing circuit

a focus area judgment circuit connected to the area dividing circuit

an area dedicated color conversion RGB value calculation circuit connected to both the area dividing circuit and the focus area judgment circuit and

a display device,

wherein

the area dividing circuit is configured

to input data showing an image, to divide the image into a plurality of blocks,

to convert the input data showing the image to image data including color information of image data indicating red, image data indicating green and image data indicating blue,

to allocate the image data including the color information into each of the blocks,

to output data of the blocks as area dividing data, and

to output the image data including the color information allocated to each of the blocks as area dedicated RGB data;

the focus area judgment circuit is configured

to input the area dividing data from the area dividing circuit,

to divide data of the blocks into a first image area and a second image area, and

to output the divided area data including the first image area and the second image area as focus area judgment data,

the area dedicated color conversion RGB value calculation circuit configured

to input the area dedicated RGB data from the area dividing circuit,

to input the focus area judgment data from the focus area judgment circuit,

to compare the area dedicated RGB data and the focus area judgment data,

in the case where the area dedicated RGB data is included in the first image area, to calculate first color conversion data obtained by converting the area dedicated RGB data included in the first image area into image data emphasizing a color of a long wavelength from the area dedicated RGB data and an intensity coefficient to emphasize color, and

in the case where the area dedicated RGB data is included in the second image area, to calculate second color conversion data obtained by converting the area dedicated RGB data included in the second image area into image data emphasizing a color of a short wavelength from the area dedicated RGB data, the intensity coefficient and a luminosity coefficient, and

to output data showing an RGB image including the first color conversion data and the second color conversion data; and

the display device is configured

to input the output data showing an RGB image from the area dedicated color conversion RGB value calculation circuit, and

to display an image in which tone of the first image area is enhanced more than tone of the second image area.

2. The image processing device according to claim 1, wherein the area dedicated color conversion RGB value calculation circuit has a judgement circuit configured to judge whether or not the area dedicated RGB data is included in either the first image area or the second image area.

3. The image processing device according to claim 1, wherein the area dedicated color conversion RGB value calculation circuit includes a relative value extraction circuit configured to extract a value of image data showing the highest luminosity from among a value of the image data indicating red, a value of the image data indicating green and a value of the image data indicating blue.

4. The image processing device according to claim 2, wherein the area dedicated color conversion RGB value calculation circuit further includes a first data conversion circuit configured to

set a value obtained by multiplying the intensity coefficient by the value of the image data indicating red, the value of the image data indicating green and the value of the image data indicating blue as the first color conversion data in the case where a value of image data showing the highest luminosity is the value of the image data indicating red;

set a value obtained by replacing the value of the image data indicating green and the value of the image data indicating red, the value of the image data indicating green, the value of the image data indicating red and the value of the image data indicating blue as the first color conversion data in the case where a value of image data showing the highest luminosity is the value of the image data indicating green; and

set a value obtained by replacing the value of the image data indicating blue and the value of the image data indicating red, the value of the image data indicating blue, the value of the image data indicating green and the value of the image data indicating red as the first color conversion data in the case where a value of image data showing the highest luminosity is the value of the image data indicating blue.

5. The image processing device according to claim 3, wherein the area dedicated color conversion RGB value calculation circuit further includes a second data conversion circuit configured to

set a value obtained by replacing the value of the image data indicating red and the value of the image data indicating blue, and a value obtained by multiplying the luminosity coefficient by each of the value of the image data indicating blue, the value of the image data indicating green and the value of the image data indicating red respectively as the second color conversion data in the case where the relatively large a value of image data showing the highest luminosity is the value of the image data indicating red;

set a value obtained by replacing the image data indicating green and the value of the image data indicating blue, and a value obtained by multiplying the luminosity coefficient by each of the value of the image data indicating red, the image data indicating blue and the value of the image data indicating green respectively as the second color conversion data in the case where a value of image data showing the highest luminosity is the value of the image data indicating green; and

set a value obtained by multiplying the intensity coefficient by the image data indicating blue, and a value obtained by multiplying the luminosity coefficient by each of the image data indicating red and the value of the image data indicating green respectively as the second color conversion data in the case where a value of image data showing the highest luminosity is the image data indicating blue.

6. The image processing device according to claim 4, wherein the first data conversion circuit converts at least one value of the image data from the value of the image data indicating red, the value of the image data indicating green and the value of the image data indicating blue to a value of an image data emphasizing a color of a long wavelength.

7. The image processing device according to claim 5, wherein the second data conversion circuit converts at least one value of the image data from the value of the image data indicating red, the value of the image data indicating green and the value of the image data indicating blue to a value of an image data emphasizing a color of a short wavelength.

8. An image processing method comprising:

inputting input data showing an image to an area dividing circuit;

dividing an image into a plurality of blocks by the area dividing circuit;

converting input data showing an image data including color data of image data indicating red, image data indicating green and image data indicating blue by the area dividing circuit;

allocating the image data including the color data to each of the blocks by the area dividing circuit;

outputting data of the blocks as area dividing data by the area dividing circuit;

outputting the image data including the color information allocated to each of the blocks as area dedicated RGB data by the area dividing circuit,

outputting the image data including the color information allocated to each of the blocks by the area dividing circuit;

inputting data of the blocks, dividing the blocks into a first image area and a second image area and outputting the divided area data including the first image area and the second image area as focus area judgment data by a focus area judgement circuit;

inputting the area dedicated RGB data and the focus area judgment data, comparing the area dedicated RGB data with the focus area judgment data by an area dedicated color conversion RGB value calculation circuit;

judging whether or not the focus area judgment data is included in either the first image area or the second image area by the area dedicated color conversion RGB value calculation circuit;

calculating first color conversion data obtained by converting the area dedicated RGB data included in the first image area into image data emphasizing a color of a long wavelength from the area dedicated RGB data and an intensity coefficient by the area dedicated color conversion RGB value calculation circuit in the case where the area dedicated RGB data is included in the first image area; and

calculating second color conversion data obtained by converting the area dedicated RGB data included in the second image area into image data emphasizing a color of a short wavelength from the area dedicated RGB data, the intensity coefficient and a luminosity coefficient by the area dedicated color conversion RGB value calculation circuit in the case where the image data is included in the second image area;

outputting output data showing an RGB image including the first color conversion data and the second color conversion data by the area dedicated color conversion RGB value calculation circuit; and

inputting the output data showing an RGB image from the area dedicated color conversion RGB value calculation circuit, and displaying an image in which tone of the first image area is enhanced more than tone of the second image area by a display device.

9. An image processing method comprising:

inputting input data showing an image to an area dividing circuit;

dividing an image into a plurality of blocks by the area dividing circuit;

converting input data showing an image data including color data of image data indicating red, image data indicating green and image data indicating blue by the area dividing circuit;

allocating the image data including the color data to each of the blocks by the area dividing circuit;

outputting data of the blocks as area dividing data by the area dividing circuit

outputting the image data including the color information allocated to each of the blocks as area dedicated RGB data by the area dividing circuit;

outputting the image data including the color information value allocated to each of the blocks by the area dividing circuit;

inputting data of the blocks, dividing the blocks into a first image area and a second image area and outputting the divided area data including the first image area and the second image area as focus area judgment data by a focus area judgement circuit;

inputting the area dedicated RGB data and the focus area judgment data, comparing the area dedicated RGB data with the focus area judgment data by an area dedicated color conversion RGB value calculation circuit;

judging whether or not the focus area judgment data is included in either the first image area or the second image area by the area dedicated color conversion RGB value calculation circuit;

extracting a first value of image data showing the highest luminosity from among the value of the image data indicating blue by the area dedicated color conversion RGB value calculation circuit in the case where the focus area judgment data is included in the first image area;

calculating first color conversion data obtained by converting the area dedicated RGB data included in the first image area into image data emphasizing a color of a long wavelength from the value of the image data indicating red, the value of the image data indicating green and the value of the image data indicating blue and the intensity coefficient;

extracting a second a value of image data showing the highest luminosity from among the value of the image data indicating red, the value of the image data indicating green and the value of the image data indicating blue by the area dedicated color conversion RGB value calculation circuit in the case where the focus area judgment data is included in the second image area; and

calculating second color conversion data obtained by converting the area dedicated RGB data included in the second image area into image data emphasizing a color of a short wavelength from the value of the image data indicating red, the value of the image data indicating green and the value of the image data indicating blue, the intensity coefficient and a luminosity coefficient;

outputting output data showing an RGB image including the first color conversion data and the second color conversion data by the area dedicated color conversion RGB value calculation circuit; and

inputting the output data showing an RGB image from the area dedicated color conversion RGB value calculation circuit, and displaying an image in which tone of the first image area is enhanced more than tone of the second image area by a display device.