Pattern position detection method, pattern position detection system, and image quality adjustment technique using the method and system

A pattern position detection method for capturing patterns displayed on a display panel with a camera and detecting positions of images of the patterns on an imaging surface of the camera, the method comprising:

• a primary-color pattern capturing step of displaying primary-color patterns of one of primary colors red, green and blue at predetermined positions on the display panel and capturing the primary-color patterns with the camera;
• a black image capturing step of displaying a black image on the display panel and capturing the black image with the camera using a shutter speed and/or an f-number used in the primary-color pattern capturing step;
• and
• a primary-color pattern position detecting step of detecting positions of images of the primary-color patterns on the imaging surface based on a difference between an image captured in the primary-color pattern capturing step and an image captured in the black image capturing step.

A pattern position detection method for capturing patterns displayed on a display panel with a camera and detecting positions of images of the patterns on an imaging surface of the camera, the method comprising:

• a white pattern capturing step of displaying white patterns at predetermined positions on the display panel and capturing the white patterns with the camera;
• a black image capturing step of displaying a black image on the display panel and capturing the black image with the camera using a shutter speed and/or an f-number used in the white pattern capturing step;
• and
• a white pattern position detecting step of detecting positions of images of the white patterns on the imaging surface based on a difference between an image captured in the white pattern capturing step and an image captured in the black image capturing step.

A pattern position detection system for capturing patterns displayed on a display panel with a camera and detecting positions of images of the patterns on an imaging surface of the camera, the system comprising:

• a display control, means that displays red patterns, green patterns and blue patterns at predetermined positions on the display panel, and a black image on the display panel;
• a red pattern position detection means that detects positions of images of the red patterns on the imaging surface based on a difference between an image obtained by the camera capturing the red patterns displayed by the display control means on the display panel, and an image obtained by the camera capturing the black image displayed by the display control means on the display panel using a shutter speed and/or an f-number used when capturing the red patterns;
• a green pattern position detection means that detects positions of images of the green patterns on the imaging surface based on a difference between an image obtained by the camera capturing the green patterns displayed by the display control means on the display panel, and an image obtained by the camera capturing the black image displayed by the display control means on the display panel using a shutter speed and/or an f-number used when capturing the green patterns;
• and
• a blue pattern position detection means that detects positions of images of the blue patterns on the imaging surface based on a difference between an image obtained by the camera capturing the blue patterns displayed by the display control means on the display panel, and an image obtained by the camera capturing the black image displayed by the display control means on the display panel using a shutter speed and/or an f-number used when capturing the blue patterns.

A display panel with image quality adjustment functions including a display panel and an image quality adjustment means provided with a storage having stored therein correction data for reducing unevenness in display of the display panel by correcting a signal input to the display panel, wherein

• red patterns are displayed at predetermined positions on the display panel and captured by a camera, a black image is displayed on the display panel and captured by the camera using a shutter speed and/or an f-number used when capturing the red patterns, positions of images of the red patterns on an imaging surface of the camera are detected based on a difference between a captured image of the red patterns and a captured image of the black image, and a red image is displayed on the display panel and captured by the camera,
• green patterns are displayed at predetermined positions on the display panel and captured by the camera, a black image is displayed on the display panel and captured by the camera using a shutter speed and/or an f-number used when capturing the green patterns, positions of images of the green patterns on the imaging surface are detected based on a difference between a captured image of the green patterns and a captured image of the black image, and a green image is displayed on the display panel and captured by the camera,
• blue patterns are displayed at predetermined positions on the display panel and captured by the camera, a black image is displayed on the display panel and captured by the camera using a shutter speed and/or an f-number used when capturing the blue patterns, positions of images of the blue patterns on the imaging surface are detected based on a difference between a captured image of the blue patterns and a captured image of the black image, and a blue image is displayed on the display panel and captured by the camera, and
• the storage stores therein
• correction data for reducing unevenness when displaying red on the display panel, the correction data being generated based on a result of detecting the positions of the images of the red patterns and on a captured image of the red image,
• correction data for reducing unevenness when displaying green on the display panel, the correction data being generated based on a result of detecting the positions of the images of the green patterns and on a captured image of the green image, and
• correction data for reducing unevenness when displaying blue on the display panel, the correction data being generated based on a result of detecting the positions of the images of the blue patterns and on a captured image of the blue image.

A display panel with image quality adjustment functions including a display panel and an image quality adjustment means provided with a storage having stored therein correction data for reducing unevenness in display of the display panel by correcting a signal input to the display panel, wherein

• primary-color patterns of one of primary colors red, green and blue are displayed at predetermined positions on the display panel and captured by a camera, a black image is displayed on the display panel and captured by the camera using a shutter speed and/or an f-number used when capturing the primary-color patterns, positions of images of the primary-color patterns on an imaging surface of the camera are detected based on a difference between a captured image of the primary-color patterns and a captured image of the black image, and an image of said one primary color is displayed on the display panel and captured by the camera,
• an image of one of two primary colors other than said one primary color is displayed on the display panel and captured by the camera,
• an image of the other of the two primary colors is displayed on the display panel and captured by the camera, and
• the storage stores therein
• correction data for reducing unevenness when displaying said one primary color on the display panel, the correction data being generated based on a result of detecting the positions of the images of the primary-color patterns and on a captured image of the image of said one primary color,
• correction data for reducing unevenness when displaying said one of two primary colors on the display panel, the correction data being generated based on a result of detecting the positions of the images of the primary-color patterns and on a captured image of the image of said one of two primary colors, and
• correction data for reducing unevenness when displaying the other of the two primary colors on the display panel, the correction data being generated based on a result of detecting the positions of the images of the primary-color patterns and on a captured image of the image of the other of the two primary colors.