用于海气界面观测的红外热像仪非均匀性校正及滤波方法研究  

Study of Nonuniformity Correction and Filtering of Infrared Camera for Air-sea Interface Observation

作　　者：韩兆辉[1,2] 王岩峰[2] 张杰[2] 

机构地区：[1]青岛大学物理科学学院,山东青岛266071 [2]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《红外》2012年第6期22-26,共5页Infrared

摘　　要：利用红外仪器开展海气界面小尺度过程热通量观测工作具有重要的科学意义,而非致冷焦平面热像仪的成像非均匀性严重影响了人们对海面温度分布的观测。以相同温度下的平静水面作为黑体,对热像仪进行了非均匀性校正,去除了条带噪声。通过对用不同滤波方法处理的图像的归一化均方误差(Normalized Mean Square Error,NMSE)、信噪比和标准差进行比较,发现高斯滤波的效果较好。To measure the air-sea heat process in a small scale by using an infrared camera is of great scientific significance. However, the imaging nonuniformity of the uncooled infrared focal plane array used in the infrared camera has severe influence on the observation of sea surface temperature distribution. By using the calm water surface as a blackbody, the nonuniformity of the infrared camera is corrected and the stripe noise is removed. By comparing the Normalized Mean Square Error （NMSE）, signal-to-noise ratio and standard deviation of the images processed via different filtering methods, the Gaussian filtering method is found to be more effective.

关 键 词：海气界面 红外热像仪 非均匀性校正 

分 类 号：TN214[电子电信—物理电子学]