image brightness

In the method DFF ( depth from focus), aiming at the characteristic of the images, we proposed that Wiener filter and image brightness normalization can be apply as preprocessing tools.

首次提出用维纳滤波和图像亮度归一化对图像做预处理，使对焦深度法的评价曲线形状得到明显的改善。

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Methods To automatically adjust x ray tube voltage of fluoroscopy for image brightness control, to use phototimer for autocontrol of exposure time.

方法自动调整透视管电压以控制图像的亮度；利用光电计时器自动控制曝光时间。

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Optical flow field is referred to the apparent motion of image brightness patterns. It can be obtained by adding constraints to solve the optical flow constraint equation.

光流场是指图像亮度模式的表观运动，可以通过添加限制条件来求解光流约束方程来获得。

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In fact, check image brightness the easiest method is to compare with the original dead in CYMK mode, try to read out the scan image color values to see whether it is close to quadrochromatic.

本质上，查抄图像平度最烦琐的办法不离是与原槁比力，在CYMK模式下试着读不入扫描图像上的色彩值，看其是否挨近草稿。

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