...机视觉；usb摄像头；opencv；灰度拉伸 [gap=709]keywords: image processing; computer vision;usb camera;opencv; gray stretch ...
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By using image difference and gray stretch technique, image histogram analysis method was used to investigate the movement of particles in image sequence. The result shows that the movement of particles has close relation with the dispersivity of pixels greyvalue.
利用差分法配合灰度拉伸对颗粒运动图像进行了处理 ,直方图分析表明 ,像素在灰度上的分布特性与颗粒运动的剧烈程度具有相关性。
参考来源 - 基于差分法的图像粒子运动分析 in C·2,447,543篇论文数据，部分数据来源于NoteExpress
Aiming at this problem, histogram equalization and gray stretch are used to enhance license plate image, and make the image clearer.
针对这一情况，将直方图均衡和灰度拉伸相结合，增强牌照图像，使图像更加清晰。
By using image difference and gray stretch technique, image histogram analysis method was used to investigate the movement of particles in image sequence.
利用差分法配合灰度拉伸对颗粒运动图像进行了处理 ，直方图分析表明 ，像素在灰度上的分布特性与颗粒运动的剧烈程度具有相关性。
The wall - a solidly constructed gray brick structure more than six feet high, surrounding a stretch of wasteland a few blocks north of the Forbidden City - did not yield.
这堵超过六英尺高，围绕着“紫禁城”北部几块荒地的灰白色围墙却并没有就此屈服。
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