Color calibration and correction applying linear interpolation technique for color fringe projection system

We presents an efficient color calibration approach by establishing color correspondence between source (design) color and measured color, and color correspondence is used to correct the recorded color obtained by camera. The proposed technique is applied to improve the accuracy of color fringe projection system, which combines color image segmentation and color intensity linear interpolation technique. In our approach, only 24 color patterns are projected and are recorded to set up color correspondence, the total number of projected patterns is fewer than many previous reported methods; we deduce that the relation between source color and measured color meets a linear expression within a small local color space, and the linear expression is regarded as the base of succedent color correction. That means: for a given measured color, the initial source color is first searched based on the rule of a minimum color distance, and then linear interpolation is applied to the local adjacent color space of the initial source color point to implement color correction. Experiment results validate the correctness of the proposed approach.