In this paper changing threshold segmentation and grid technology is applied so that computer vision system is to save time, to improve accuracy and processing speed.
Both of the contrast vision and contrast threshold possess double function information of vision and contrast sensitivity, but a few functions of some eye diseases failed to respond in the same way.
对比视力和对比阈值都具有视力和对比敏感性的双功能信息，但在部分病眼功能的反映上不尽相同。
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The measuring of simultaneous contrast resolution limits (threshold) of human mesopic vision suggests that they would change when different colors or different gray background.