一种红外图像伪彩色显示算法及其硬件设计

摘要

介绍了红外图像伪彩色显示的原理、编码算法和硬件组成。设计了三种由暗(黑)到明(白)的RGB映射函数与红外图像的温度由低到高相对应，实现了彩色层次分明，图像细节突出，更适合人眼观察的伪彩色图像显示。最后通过FPGA+TMS320C6416DSP+SAA7199B数字视频编码芯片，实现了实时可变的伪彩色变换算法和视频编码输出，验证了系统软硬件的有效性。%The principle of IR image pseudo-color display, coding algorithm and hardware structure are intro-duced. Three kinds of red, green and blue (RGB) mapping functions from dark (black) to bright (white) are designed, which correspond to the temperature of the infrared images from low to high. Pseudo-color image display with dis-tinct color, outstanding image detail and more suitable to human eyes observation is realized. The real-time variable pseudo-color transform algorithm and video coding output are realized through FPGA+TMS320C6416DSP+SAA7199B digital video encoding chip, and the effectiveness of system software and hardware is verified.