基于DSP的红外焦平面阵列坏像元补偿技术的研究

Research of IRFAP Bad Pixel Correction Technology by using DSP Image Processing System

根据消除红外图像的坏像元,改善图像质量的基本要求,本文对红外图像的坏像元补偿算法进行了深入的研究,分析了坏像元产生的原因,介绍了目前常用的几种实现算法,并结合DSP硬件具有强大的运算能力及灵活的可编程性的特点,设计了红外图像的坏像元补偿的硬件构成,描述了加窗中值补偿方法的实现,并对像元数为(320×240)的红外焦平面阵列进行了图像坏像元补偿和对比,实验结果达到了预期目的。

For the basic request of real-time IRFAP image processing about eliminate the bad pixel and improve image quality, the bad pixel correction arithmetic of infrared image is studied. The principle which engender bad pixel is analyzed and the main realization arithmetic of bad pixel correction is introduced. Described the repair method of use window median which makes use of the powerful computational capa- bility and good program ability of DSP hardware is therefore proposed to do the real time correction of infrared image. Experimental results showed that the infrared image bad pixel real time correction system based on DSP can do the correction to satisfactory results.