COLOR CHART DETECTION DEVICE, COLOR CHART DETECTION METHOD AND COLOR CHART DETECTION COMPUTER PROGRAM

摘要

A color chart detection apparatus that detects a color chart from an image representing the color chart, the color chart having a plurality of palettes arranged in a predefined order is provided. The color chart detection apparatus: extracts any pixel having a color component corresponding to each designated one of a predetermined number, not smaller than three, of palettes; selects at least three palettes to form a first group and, when a combination of pixels selected on a palette-by-palette basis from among the pixels extracted for the respective palettes included in the first group is arranged in the same predefined order as the palettes, detects each of the pixels included in the combination as being a candidate pixel that is likely to represent a corresponding one of the palettes included in the first group; and based on the candidate pixel, computes color information representing color of the palette corresponding to the candidate pixel on the image and position information representing position of the corresponding palette on the image.