一种校正红外成像系统快门非均匀性的方法

摘要

红外图像除了红外焦平面阵列本身的非均匀性之外,镜头、外壳、快门等都会造成红外图像的非均匀性.随着科技的不断进步,非制冷红外热成像系统的体积在不断减小,热成像系统的散热问题逐渐凸显.使用快门校正的热像仪在长时间工作后,快门受热造成图像的非均匀性无法消除.因此,在对热像仪进行非均匀性时,使用改进的方法重新计算非均匀性校正参数,可以有效的消除由于快门发热造成的非均匀性的影响,在长时间使用红外热成像系统时,可以提高红外图像质量.%The lens, housing, shu tter etc. will lead to the non-uniformity of infrared imaging in addition to the non-uniformity of the infrared focal plane array itself. With the improvement of science and technology, the volume of the uncooled infrared thermal imaging system is decreasing, and the heat dissipation problem of the system is becoming more and more obvious. The non-uniformity of imaging caused by the heated shutter can't be eliminated after the infrared system working for a long time. Therefore, the use of improved method to recalculate the non-uniformity correction parameters can effectively eliminate the non-uniformity caused by the heated shutter in the process of non-uniformity correction of infrared imaging. The new method can improve the infrared image quality after the system working for a long time.