给出了电阻阵列非均匀性校正方法，并根据非均 匀性测试模型分析了1∶1映射下的非均匀性全屏测试方法。针对图像退化会导致边 缘效应以及收敛性变差的问题，研究了基于点扩散函数估计的全屏测试方法。仿真结果 表明，与原方法相比，该方法可以减少边缘效应的影响，并且在平滑因子较大时可以体现出更好的收敛性。

A non-uniformity correction method for resistor arrays is given and a flood non-uniformity measurement method in the mapping ratio 1∶1 is analyzed according to the functional diagram of a non-uniformity measurement model. To improve the edge effect and non-ideal convergence due to image deterioration, a flood non-uniformity measurement method based on point spread function estimation is proposed. The simulation result shows that compared with the former method, this method can reduce the edge effect and has a better convergence when a greater smooth factor is existent.