In addition to using the aberration correction theory, optical distortion can be corrected with the digital image processing technology.

光学系统的畸变除了利用像差理论来实现校正外，还可以利用数字图像处理技术来进行校正。

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The necessity of processing optical information for traditional X ray device has been stated, and the methods used to realize digital image has been outlined.

叙述了对X线胃肠机的光信息进行处理的必要性和X线胃肠机的图像数字化方法概况。

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In the field of image processing, there are two completely different methods. One method is optical image processing, and the other is the computer digital image processing.

在图像处理领域，存在着两类完全不同的方法，一类是光学图像处理方法，另一类是计算机数字图像处理方法。

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