grey-level image

基本解释

At first, a color image is transformed into a grey-level image in OHTA color space, and segmented by constant threshold value;
首先将图像转换为OHTA颜色空间中的灰度图像，用阈值法实现了图像分割；
For regions with high grey-scale level or with tensely variable grey level, the image enhancement coefficients shall be adaptively controlled based on local mean value and variance.
针对图像中的高灰度区和灰度剧变区，应用图像局部均值和方差自适应调节增强系数。
By taking the image to be compressed as a grey-level surface of some fractal brown motion, the fractal dimension of this surface gives out a good description of its texture characteristics.
把灰度图像看作是某种分数布朗运动形成的（分形）灰度表面，并用这种灰度表面的分形维数来刻画它的纹理粗糙程度。

灰度图像
By doing this, the new method combined surface fitting with watershed transform solves the grey-level image segmentation in complex background well.
最后,本文将曲面拟合法和分水岭变换法有机的结合起来实现复杂背景下的灰度图像分割。