To discern edge and noise in multiresolution edge detection used single threshold, we put forward a kind of adaptive threshold and improve the method of edge linking.
针对小波变换多分辨率边缘检测中单一阈值难以区分边缘与噪声的问题，本文提出了一种自适应的阈值方法，并改进了边缘链接方法。
After correlation detection step, noise pixels in the image sequences are almost suppressed, and only target pixels and a few clutter pixels can pass the detection threshold.
经过相关检测后，图像序列中的噪声几乎完全被门限所抑制，只有极少数噪声像素、全部目标像素和一小部分杂波像素可以通过相关检测门限。
The first is the endpoint detection based on fractal dimension. It utilizes fractal dimension superiority and overcomes the difficulty of decision threshold in noise environment.
该方法利用了分形维数在噪声情况下作为语音端点检测参数的优越性，克服了在噪声情况下判决门限难以估计的问题。
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