基于滑动窗口与多帧补偿的自适应盲元检测与补偿算法

A Blind Pixel Self-adaptive Detection And Compensation Algorithm Based on Sliding Window and Multi-frame Compensation

针对红外焦平面阵列元响应的盲元产生机理,提出了一种基于滑动窗口与多帧补偿的自适应盲元检测与补偿方法。该方法首先以多帧补偿找出闪烁盲元,再对累加图像的某一像元为中心进行加窗,计算加窗后的均值与标准差,然后通过比较窗口中心像元灰度与均值的偏差是否大于3倍标准差来判断其是否为盲元。再通过滑动窗口的中值查找法来对盲元进行补偿。仿真结果表明,该方法查找速度快、定位准确、补偿效果好,是一种比较实用的盲元检测与补偿方法。

A new method of self-adoptive detecting and compensating blind pixels has been submitted in this paper,it is based on the theory of gliding window and multi-frame compensation.First,the blind pixels are detected through the multi-frame compensation,and then set one chosen pixel as the origin to add the gliding window,and finally calculate the average value and the deviation.If the difference between the gray of the central pixel and the average is 3 times higher than the deviation,then the chosen pixel is considered as a blind pixel.The detected pixels are compensated by means of searching the median value of the gliding window.The simulation results shows that,the method proposed in this paper can detect the blind pixels fast and accurate,and the compensation result is fantastic,which are all proved that it is a very useful method.