对滤波后的纹理缺陷结果图像采用双阈值法，以确定纹理缺陷所在的位置。
Locations of texture defects were determined in the filtered image with texture defects by using the dual threshold method.
在识别算法中采用字长阈值法、滑动模板法和误差双阈值法来减小环境噪声的影响。
Threshold of word length, sliding template, and double threshold of error are applied to minimize influence of environmental noise.
将因果检测法与双阈值法相结合，提出了一种基于因果的自适应双阈值镜头边界检测算法。
Combined the cause and effect method with the double threshold method, an adaptive double threshold shot boundary detection method based on the cause and effect method is proposed.
针对这一问题，在上述算法中用双阈值法代替固定阈值，在文字图像轮廓提取中取得了较好的效果。
To solve this problem, using double threshold value takes the place of character threshold value in the former algorithm.
采用改进的双阈值法和基于模型的方法进行渐变镜头的检测，根据运动向量的变化检测摄像机的运动状态。
Dual threshold and Basing on model are used to detect gradual changes, and the change of motorial vectors is used to detect the motion of the camera.
灰度直方图算法有效避免了直方图法的漏检问题和灰度图法的误检问题，同时采用双阈值法提高了检测效率。
The method can effectively avoid the problems of undeteeting and false drop, and it uses the dual-threshold method to improve the detection efficiency.
首先使用改进了的像素匹配二次差分法结合双阈值法进行镜头突变和渐变的检测，然后对镜头内的帧间距离进行判断来提取关键帧；
The pixel-matching two-difference algorithm and two histogram comparison are used for shot detection, a method of extraction shot key frame based on distance of adjacent frame is presented.
首先使用改进了的像素匹配二次差分法结合双阈值法进行镜头突变和渐变的检测，然后对镜头内的帧间距离进行判断来提取关键帧；
The pixel-matching two-difference algorithm and two histogram comparison are used for shot detection, a method of extraction shot key frame based on distance of adjacent frame is presented.
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