UC知道英文文献翻译~~
来源：百度知道 编辑：UC知道 时间：2024/05/29 23:35:12
Finally, hysteresis is used as a means of eliminating streaking. Streaking is the breaking up of an edge contour caused by the operator output fluctuating above and below the threshold. If a single threshold, T1 is applied to an image, and an edge has an average strength equal to T1, then due to noise, there will be instances where the edge dips below the threshold. Equally it will also extend above the threshold making an edge look like a dashed line. To avoid this, hysteresis uses 2 thresholds, a high and a low. Any pixel in the image that has a value greater than T1 is presumed to be an edge pixel, and is marked as such immediately. Then, any pixels that are connected to this edge pixel and that have a value greater than T2 are also selected as edge pixels. If you think of following an edge, you need a gradient of T2 to start but you don't stop till you hit a gradient below T1.
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Step 6
第6步
Finally, hysteresis is used as a means of eliminating streaking. 最后，迟滞被用作一种消除图像拖尾的手段。Streaking is the breaking up of an edge contour caused by the operator output fluctuating above and below the threshold. 图像拖尾是边缘轮廓因算子输出在阈值上下波动而引起的破碎。If a single threshold, T1 is applied to an image, and an edge has an average strength equal to T1, then due to noise, there will be instances where the edge dips below the threshold. 如果一个单一阈值T1被用于一幅图像，而一个边缘有一个等于T1的平均强度，那么由于噪声，就会存在边缘降到阈值以下的情况。Equally it will also extend above the threshold making an edge look like a dashed line. 同样，它也将会扩展到阈值之上，使一个边缘看上去像一条虚线一样。To avoid this, hysteresis uses 2 thresholds, a high and a low. 为了避免这种情况，迟滞采用了两个一高一低的阈值。Any pixel in the image that has a value greater than T1 is presumed to be an edge pixel, and is marked as such immediately. 在一幅值超过T1的图像中的任何像素都被假设为一个边缘像素，而且立即被照此标志。Then, any pixels that are connected to this edge pixel and that have a value greater than T2 are also selected as edge p