Pseudo-color visualization of infrared temperature data based on color difference and HSI

Traditional infrared pseudo color codings based on RGB color model are obtained from gray space; therefore, the color of this kind of pseudo color infrared image has a maximum of 256 types, which cannot fully represents the temperature information of the infrared image, also hard to conform to human visual characteristic. In order to solve these problems, this paper proposes a temperature data pseudo color coding method, which is based on perceptual color space and color difference theory and breaks the limitation of the number of gray scales. Experimental results show that the proposed color coding method has a uniform color transition, and the color of the pseudo color image is much richer.