对最大类间方差法的改进主要表现在两个方面：建立阈值的评价准则和提高算法的运行速度。
The improvement in Ostu algorithm is represented in two aspects: establishing evaluation rules of segmentation threshold and accelerating the algorithm's operation.
由于这些模型采用滤波器组模拟对比度敏感函数(CSF)，增加了视觉阈值获取和实时评价算法的复杂度。
As filter Banks are used to simulate the contrast sensitivity function (CSF) in these models, the complexity of visual threshold obtainment and real-time (assessment) algorithms are increased.
基于物体表面色样本的视觉评价，测试常用色差公式在人眼阈值水平的微小色差预测性能。
The performances of modern colour-difference formulae were investigated to evaluate very small colour difference at human eyes threshold level based on object surface colours.
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