With the advantage of simple structure,recursive filter be widely used in image noise reduction and target enhance for sequence images.Through analysis SNIR between input and output signal of recursive filter,get affect connection about iteration factor and target duration for SNIR.Then point out problems that should be attentive when choose iteration factor during recursive filter design period.And give a choose method of recursive filter′s optimum iteration factor when it was be used in target enhancing.
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周冰,沈洪斌,周中亮.递归滤波用于目标增强的性能分析[J].激光与红外,2009,39(5):566~570 ZHOU Bing, SHEN Hong-bin, ZHOU Zhong-liang. Analysis about target enhancing performance of recursive filter[J]. LASER & INFRARED,2009,39(5):566~570