而且随着多种技术的涌现-灰度打印，乳胶油墨技术，混合油墨，传接功能，等等-这些都是需要考虑的因素。
And with the advent of so many technologies-true grayscale printing, latex ink technology, hybrid inks, multi-drop capabilities, etc. -it's instructive to consider a few perspectives.
一维最小误差阈值法假设了目标和背景的灰度分布服从混合正态分布。
One-dimensional minimum error thresholding method assumed that the histogram distributions of object and background are governed by a mixture Gaussian distribution.
首先建立高斯混合的灰度统计模型，运用MDL准则自动确定类别的数目。
Gaussian mixture model is firstly built as the statistical model for the intensity image, with an estimation of index number using MDL.
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