...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
散斑图像的预处理包括有降噪、图像识别、灰度拉伸；
The speckle image pre-processing consists of noise decreasing, image recognition and gray extending.
通过灰度拉伸增强图像对比度，通过二值化处理实现图像中背景和对象的分割。
The contrast of the image was enhanced by gray expanding and the key threshold of the binarization algorithm was determined based on the dynamical threshold method.
我们主要分析了不同的插值方法，刀口，灰度拉伸，高度，角度对MTF的影响。
We also analyse different interpolating methods , knife edge, gray-draw, height, angle which effect Modulated Transfer Function(MTF).
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