First, the captured data of the IT8.7/4 standard color card under color image acquisition equipments, such as scanners, are taken as input signals and standard color data that are measured by X-rite eye-one is are used as output values, and the BP neural network-based algorithm generates the mapping model of the current capturing environment. After cutting out these data which are abundant chromatic aberration, a number of samples are selected from the IT8.7/4 standard color card.