IMAGE QUALITY ADJUSTING DEVICE, IMAGE QUALITY ADJUSTING METHOD, AND IMAGE QUALITY ADJUSTING PROGRAM

• US 20110157409A1
• Filed: 08/27/2009
• Published: 06/30/2011
• Est. Priority Date: 08/27/2008
• Status: Abandoned Application

• Current Assignee: ATRC Corporation, Mitsumi Electric Co., Ltd. (Minebea Mitsumi, Inc.)
• Original Assignee: ATRC Corporation, Mitsumi Electric Co., Ltd. (Minebea Mitsumi, Inc.)
• Inventors: Adachi, Takeshi
• Application Number:
  US13/060,393
• Publication Number:
  US 20110157409A1
• Time in Patent Office: Days
• US Class Current: 348/222.1
• CPC Class Codes: G09G 2320/06 Adjustment of display parameters
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2320/0693 Calibration of display systems
• CPC Class Codes: G09G 2330/12 Test circuits or failure detection circuits included in a display system, as permanent part thereof
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: H04N 17/02 for colour television signals
• CPC Class Codes: H04N 17/04 for receivers
• CPC Class Codes: H04N 23/88 for colour balance, e.g. white-balance circuits or colour temperature control
• CPC Class Codes: H04N 9/73 Colour balance circuits, e.g. white balance circuits or colour temperature control camera processing pipelines for colour balance H04N23/88

Abstract

An image quality adjusting device 12 includes an imaging unit 21 capturing a screen of a display terminal 11 using a spectroscopic camera and an RGB camera to obtain image information; an analysis unit 22 obtaining color data, profile data, and histogram data from the image information obtained by the imaging unit 21 and analyzing image quality characteristics including still image characteristics and video image characteristic; and an image quality adjusting unit 23 generating a look-up table (LUT), which is used to adjust the image quality of the display terminal 11 by means of predetermined image quality adjustment parameters, based on image quality evaluation data of the display terminal 11 obtained by the analysis unit 22, and updating image quality information preset in the display terminal 11 based on the generated look-up table to adjust the image quality of the display terminal 11.

Claims

1. A device for adjusting image quality of image information displayed on a screen of a display terminal, the device comprising:

an imaging unit capturing the screen of the display terminal using a spectroscopic camera and an RGB camera to obtain the image information;

an analysis unit obtaining color data, profile data, and histogram data from the image information obtained by the imaging unit and analyzing image quality characteristics including still image characteristics and video image characteristic; and

an image quality adjusting unit

generating a look-up table (LUT), which is used to adjust the image quality of the display terminal by means of predetermined image quality adjustment parameters, based on image quality evaluation data of the display terminal obtained by the analysis unit, and

updating image quality information preset in the display terminal based of the generated look-up table to adjust the image quality of the display terminal.

2. The device as claimed in claim 1, further comprising:

a switching unit switching between an input signal input from the display terminal and a camera signal obtained by the RGB camera; and

a profile-histogram obtaining unit obtaining the profile data and the histogram data from each one of the input signal and the camera signal switched by the switching unit,

3. The device as claimed in claim 1, further comprising:

an image quality adjustment control unit setting thresholds in advance for the profile data and the histogram data obtained by the analysis unit and causing the image quality adjusting unit to statically or dynamically adjust the image quality based on the thresholds.

4. The device as claimed in claim 3, wherein the image quality adjustment control unit generates an image quality adjustment look-up table based on the profile data and the histogram data obtained by the analysis unit and dynamically performs feedback control on the display terminal.

5. A method for adjusting image quality of image information displayed on a screen of a display terminal, the method comprising:

an image signal obtaining step of capturing the screen of the display terminal by an imaging unit including a spectroscopic camera and an RCB camera to obtain an image signal indicating the image information;

an analysis step of obtaining color data, profile data, and histogram data from the image information of a still image or a video image obtained in the image signal obtaining step and analyzing image quality characteristics including still image characteristics and video image characteristics; and

an image quality adjusting step of

generating a look-up table (LUT), which is used to adjust the image quality of the display terminal by means of predetermined image quality adjustment parameters, based on image quality evaluation data of the display terminal obtained in the analysis step, and

updating image quality information preset in the display terminal based of the generated look-up table to adjust the image quality of the display terminal.

6. The method as claimed in claim 5, further comprising:

a switching step of switching between an input signal input from the display terminal and a camera signal obtained by the RGB camera; and

a profile-histogram obtaining step of obtaining the profile data and the histogram data from each one of the input signal and the camera signal switched in the switching step.

7. The method as claimed in claim 5, further comprising:

an image quality adjustment control step of setting thresholds in advance for the profile data and the histogram data obtained in the analysis step and causing the image quality to be adjusted statically or dynamically based on the thresholds in the image quality adjusting step.

8. The method as claimed in claim 7, wherein the image quality adjustment control step further comprises generating an image quality adjustment look-up table based on the profile data and the histogram data obtained in the analysis step and dynamically performing feedback control on the display terminal.

9. A non-transitory computer-readable storage medium having a program stored therein for causing a computer to perform a method of adjusting image quality of image information displayed on a screen of a display terminal, the method comprising:

an image signal obtaining step of capturing the screen of the display terminal by an imaging unit including a spectroscopic camera and an ROB camera to obtain an image signal indicating the image information;

an analysis step of obtaining color data profile data, and histogram data from the image information of a still image or a video image obtained in the image signal obtaining step and analyzing image quality characteristics including still image characteristics and video image characteristics; and

an image quality adjusting step of

generating a look-up table (LUT), which is used to adjust the image quality of the display terminal by means of predetermined image quality adjustment parameters, based on image quality evaluation data of the display terminal obtained in the analysis step, and

updating image quality information preset in the display terminal based of the generated look-up table to adjust the image quality of the display terminal,

10. The storage medium as claimed in claim 9, the method further comprising:

a switching step of switching between an input signal input from the display terminal and a camera signal obtained by the RGB camera; and

a profile-histogram obtaining step of obtaining the profile data and the histogram data from each one of the input signal and the camera signal switched in the switching step.

11. The storage medium as claimed in claim 9, the method further comprising:

an image quality adjustment control step of setting thresholds in advance for the profile data and the histogram data obtained in the analysis step and causing the image quality to be adjusted statically or dynamically based on the thresholds in the image quality adjusting step.

12. The storage medium as claimed in claim 11, wherein the image quality adjustment control step further comprises generating an image quality adjustment look-up table based on the profile data and the histogram data obtained in the analysis step and dynamically performing feedback control on the display terminal.