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痕迹图像背景干扰是痕迹检验中经常遇到的问题。抑制痕迹图像背景干扰的传统方法包括光学方法和化学方法。利用数字图像处理方法抑制痕迹图像背景干扰的方法有基于图像配准的痕迹图像背景干扰抑制方法、基于通道相减的痕迹图像背景干扰抑制方法和基于傅立叶变换的痕迹图像背景干扰抑制方法。将传统的光学方法和化学方法与数字图像处理方法结合起来,能实现对痕迹图像背景干扰的更有效的抑制。
Trace image background interference is often encountered in trace inspection problems. Conventional methods of suppressing the background interference of trace images include optical methods and chemical methods. The methods to suppress the background image interference of the image using digital image processing methods are the background image suppression based on image registration, the background image suppression based on channel subtraction and the background noise suppression based on Fourier transform. The traditional optical methods and chemical methods combined with digital image processing methods can achieve more effective suppression of background image interference.