There are biological foundation for some factors, such as human consciousness, idea and formation of appreciation of the beautiful, original image, symbol and activity.
人类的意识和审美观念以及审美活动的前形态原始形象符号活动都有其生物学的根据。
Variance estimation is a common problem in noised image processing. The basic idea is to get a sub-image that includes only "pure" noise to estimate the variance of original noise.
噪声的方差估计是含噪图像处理中的常见问题之一，其基本思想是通过某种方法寻找含噪图像中的“纯”噪声子图像来估计原噪声方差。
It's hard to discern and just gives you a vague idea of what the original image is. That is exactly what a thumbnail's purpose is.
微型图片的作用只是使网站访问者对图片有一个模糊的了解，并不能让他们清楚地认识图片。
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