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针对32通道毫米波焦平面成像中存在的像素偏移,提出了基于数据相关性进行像素校准的方法。给出32通道毫米波焦平面成像的原理,分析了像素偏移产生的原因。结合实际观测结果分析了图像中存在的像素偏移,重点阐述了利用数据相关性进行图像处理的步骤并给出了处理结果。实验结果表明,该方法能够很好的消除图像中的像素偏移,提高图像质量。
Aiming at the pixel shift existing in 32-channel millimeter-wave focal plane imaging, a method of pixel calibration based on data correlation is proposed. The principle of 32-channel millimeter-wave focal plane imaging is given, and the reason of pixel offset is analyzed. The pixel shift existing in the image is analyzed based on the actual observation results. The steps of image processing using the data correlation are emphatically elaborated and the processing results are given. Experimental results show that this method can eliminate the pixel offset in the image and improve the image quality.