In the fourth chapter the analysis for the visual features, the adaptive clustering and the extraction of the image area with the image similar visual brightness are analyzed.

第四章分析了图像视觉特征的邻域矩特征描述，并对邻域矩特征进行自适应聚类提取边界和图像目标的视同灰度的提取。

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These channels encode data about an object's size, clarity, brightness and location in the visual field.

这些信息通道将被视物的尺寸、清晰度、亮度和视野中的位置等信息进行编码。

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To feel the white in the physical space, the clean air is across the leaves like the draw, which prints in the visual images clearly, spreading to be the natural brightness.

在平阔的物理空间中感受白色，如一滴晨露滑落叶尖的清新，就如此清晰地印在自然的视觉意象里，扩展成永不消散的明净。

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Seventy French university students were recruited for the study and told they would be participating in a three-day experiment testing the effects of brightness of video games on visual perception.

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