基于DSP红外图像非均匀校正设计

The Design of Non Uniformity Correction of Infrared Image Based on DSP

由于红外焦平面探测器各点的响应度不一致,需要对红外图像进行非均匀校正。目前许多红外成像设备非均匀校正均通过后台PC机完成,需要专门设计与PC机的接口,提高了成本,而且不利于脱机运行。系统使用红外图像处理板自身的DSP完成非均匀校正系数的计算,设计简洁,操作方便,取得了理想的效果。文中分析了两点校正的原理,介绍了实现方法,对其中涉及的关键技术进行了详细描述。

Since unconformity of the dots of infr ar ed focal plane,it is necessary to do non uniformity correction(NUC)for infrar ed image.As many thermographs existing now,NUC is implemented by a computer b ackward,so an interface to PC must be designed specially,the cost will be high and the device can not work independently.In this system the NUC coefficients are calculated by the DSP within the processor board of infrared image,the hard ware is concise and it's convenient for operation.The principle of two-point correction is analysed and the main methods are introduced in this paper meanwh ile the key technology of the system is described in detail.