System for analyzing display device and color analyzing method thereof
AssigneeVieworks Co., Ltd.
InventorsSeung Hyun Kim, Gi Ryong Choi, Jin Hee Oh, Yoon Hyuk Lee
Life of this patent
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Abstract
Disclosed is a system for analyzing a display device, the system including: an image photographing device configured to photograph an image for inspection output from a display device to be inspected and obtain an RGB value for inspection from the photographed image; and an inspection control unit configured to convert the RGB value for inspection into a CIE XYZ value by using a previously prepared color conversion function, and determine defect of the display device to be inspected by using the converted CIE XYZ value.
Claims15
A system for analyzing a display device, the system comprising:
- an image photographing camera device configured to photograph an image for inspection output from a display device to be inspected and obtain an RGB value for inspection from the photographed image;
- an inspection control unit configured to convert the RGB value for inspection into a CIE XYZ value for inspection by using a previously prepared color conversion function, and determine a defect of the display device to be inspected by using the converted CIE XYZ value for inspection;
- and
- a color analyzing device configured to photograph an image for calibration output from a display device for calibration and measure a spectrum of the photographed image;
- wherein
- the color analyzing device obtains a light wavelength from the spectrum and converts the obtained light wavelength into a CIE XYZ value for calibration, and
- the image photographing camera device photographs the image for calibration output from the display device for calibration and obtains an RGB value for calibration from the photographed image;
- the system further comprising a calibration control unit configured to calculate a color conversion function by using the RGB value for calibration and the CIE XYZ value for calibration obtained by the color analyzing device,
- wherein the calibration control unit generates the color conversion function by using at least one of a polynomial, a linear transform, a neural network, a lookup table, or a multispectral transform method;
- wherein the color analyzing device is composed of any one of a spectrometer, a tristimulus colorimeter, and a RGB colorimeter;
- and
- wherein the inspection control unit and the calibration control unit are implemented by a processor.
A method of analyzing a color of a system for analyzing a display device, the method comprising:
- an RGB image for calibration photographing operation for photographing an image for calibration and obtaining an RGB value for calibration from the photographed image;
- a standard color photographing operation for photographing the image for calibration and obtaining a CIE XYZ value for calibration from the photographed image;
- and
- a color conversion function calculating operation for calculating a color conversion function by using the RGB value for calibration and the CIE XYZ value for calibration;
- an RGB image for inspection photographing operation for photographing an image for inspection and obtaining an RGB value for inspection from the photographed image;
- and
- a defect inspecting operation for determining a defect of the image for inspection by using the color conversion function and the RGB value for inspection;
- wherein the color conversion function calculating operation generates the color conversion function by using at least one of a polynomial, a linear transform, a neural network, a lookup table, or a multispectral transform method.
Dependencies are inferred from the claim text.