Method for calculating glare evaluation value of protective film and device for calculating glare evaluation value of protective film

摘要

PROBLEM TO BE SOLVED: To provide a method for evaluating glare of a protective film and a device for evaluating the glare of the protective film capable of quantitatively measuring variation in color chromaticity and brightness due to the glare of the protective film, and visually expressing the variation.SOLUTION: In a state where the protective film is mounted on an image display surface of an image display device, a color image displayed on the image display surface is imaged by imaging means through the protective film, and color image data obtained by the imaging is subjected to Fourier transformation processing. Then, after removing regular periodic components that are generated by pixels of the color image displayed on the image display surface, the color image data is further subjected to inverse Fourier transformation processing, and the color image data obtained by the inverse Fourier transformation processing is output displayed as an image. The color image data obtained through the inverse Fourier transformation processing is subjected to data processing, and the glare of the protective film is evaluated on the basis of the variation in the color chromaticity and the brightness of the color image data based on the information calculated through the data processing.SELECTED DRAWING: Figure 2