Color analysis device, analysis system, quality visualization system, and color analyzing method

A quality visualization system characterized by comprising

• a color information obtaining unit that obtains color information of each sensor, from an object with two and more types of sensors attached there which change color according to a size of physical quantity to be measured and a time when the physical quantity lasts,
• a storing unit that records discoloration characteristics of the respective sensors, as each discoloration map with the physical quantity and the time as axes, for every sensor,
• a physical quantity converting unit that specifies an area within each discoloration map corresponding to the color information of each sensor obtained by the color information obtaining unit, calculates an overlapping area when the discoloration maps overlap each other as for the specified areas within the discoloration maps, and specifies a combination of the corresponding physical quantity and time from the position of the overlapping area within the discoloration map,
• a quality estimating unit that estimates quality of the object, from the combination of the physical quantity and time specified by the quantity converting unit, referring to data indicating a speed of quality changing according to the physical quantity of time, defined in every index about the quality of the object, and
• an output unit that visualizes the quality of the object.