IMAGE PROCESSING APPARATUS, DISPLAY APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM

• US 20160140913A1
• Filed: 05/28/2014
• Published: 05/19/2016
• Est. Priority Date: 06/24/2013
• Status: Active Grant

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: MATSUMURA, Kenichi, ARAGANE, Kuniaki, MASUDA, Kenji
• Granted Patent: US 10,446,092 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2330/04 Display protection
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• 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

Abstract

An image processing apparatus that can protect user'"'"'s eyes by reducing harmful blue light in a mode that matches the characteristics of an image to be displayed and the preference of the user who causes the image to be displayed. The image processing apparatus includes a blue light reduction control unit that acquires image information Sin corresponding to an image to be displayed on a display and a pixel value update unit that generates update image information Sbc by reducing at least luminance corresponding to a blue component in the acquired image information Sin so that a reduction rate of the luminance corresponding to the blue component is greater than or equal to reduction rates of luminance corresponding to the other color components in the acquired image information Sin and outputs the update image information Sbc to the display to cause the display to display the update image information Sbc.

Claims

1. An image processing apparatus comprising:

an acquisition means that acquires image information corresponding to an image to be displayed on a display means; and

a processing means that performs luminance control processing that generates display image information by reducing at least luminance corresponding to a blue component in the acquired image information so that a reduction rate of the luminance corresponding to the blue component in the acquired image information is greater than or equal to reduction rates of luminance corresponding to the other color components in the acquired image information and outputs the display image information to the display means to cause the display means to display the display image information.

2. The image processing apparatus according to claim 1, wherein

the blue component is a B component in an RGB (Red Green Blue) color space and the other color components are an R component and a G component in the RGB color space, and

the processing means generates the display image information by reducing the luminance corresponding to the B component so that the reduction rate of the luminance corresponding to the B component is greater than the reduction rates of the luminance respectively corresponding to the R component and the G component and outputs the display image information to the display means to cause the display means to display the display image information.

3. The image processing apparatus according to claim 2, wherein

as the luminance control processing, the processing means generates the display image information by setting, the greater the B component in a pixel included in the image is than the R component and the G component in the pixel, the greater the reduction rate of the luminance corresponding to the B component.

4. The image processing apparatus according to claim 2, wherein

as the luminance control processing, the processing means generates the display image information by setting the reduction rates of the luminance respectively corresponding to the R component and the G component to be greater than or equal to a quarter and smaller than or equal to a half of the reduction rate of the luminance corresponding to the B component.

5. The image processing apparatus according to claim 1, wherein

the blue component is a B component in hue in a color space including three elements including the hue, and saturation and the other color components are color components other than the B component in the hue, and

the processing means generates the display image information by reducing the luminance corresponding to the B component so that the reduction rate of the luminance corresponding to the B component is greater than or equal to the reduction rates of the luminance corresponding to the color components other than the B component in the hue and outputs the display image information to the display means to cause the display means to display the display image information.

6. The image processing apparatus according to claim 5, wherein

as the luminance control processing, the processing means generates the display image information by setting all the reduction rates of the luminance respectively corresponding to the B component in the hue and the color components other than the B component in the hue to be the same.

7. The image processing apparatus according to claim 5, wherein

when an image corresponding to the acquired image information is achromatic color, as the luminance control processing, the processing means generates the display image information by reducing only an element other than the hue and the saturation in the color space.

8. The image processing apparatus according to claim 5, wherein

as the luminance control processing, the processing means generates the display image information by reducing only the luminance corresponding to the B component in the hue.

9. The image processing apparatus according to claim 5, wherein

the color space is either one of an HLS (Hue, Luminance, Saturation) color space and an HSV (Hue, Saturation, Value) color space.

10. The image processing apparatus according to claim 1, further comprising:

a detection means that detects an average luminance in the entire image to be displayed,

wherein when the detected average luminance is greater than or equal to a previously set luminance, the processing means performs the luminance control processing.

11. The image processing apparatus according to claim 1, wherein

the processing means comprises

a storage means that previously stores luminance information indicating at least the reduction rate of the luminance corresponding to the B component for the luminance control processing, and

a selection means that is used to cause the stored luminance information to be selected, and

the processing means performs the luminance control processing by using the selected luminance information.

12. The image processing apparatus according to claim 1, further comprising:

a region selection means that is used to select a part of a display region of the display means where the image is displayed,

wherein the processing means performs the luminance control processing only on the selected part.

13. A display apparatus comprising:

the image processing apparatus according to claim 1; and

the display means that acquires the display image information and displays an image corresponding to the display image information.

14. An image processing method comprising:

an acquisition step of acquiring image information corresponding to an image to be displayed on a display means; and

a processing step of generating display image information by reducing at least luminance corresponding to a blue component in the acquired image information so that a reduction rate of the luminance corresponding to the blue component in the acquired image information is greater than or equal to reduction rates of luminance corresponding to the other color components in the acquired image information and outputting the display image information to the display means to cause the display means to display the display image information.

15. An image processing program causing a computer included in an image processing apparatus to function as:

an acquisition means that acquires image information corresponding to an image to be displayed on a display means; and

a processing means that generates display image information by reducing at least luminance corresponding to a blue component in the acquired image information so that a reduction rate of the luminance corresponding to the blue component in the acquired image information is greater than or equal to reduction rates of luminance corresponding to the other components in the acquired image information and outputs the display image information to the display means to cause the display means to display the display image information.