什么是“能量"?在图像处理中? [英] What is "energy" in image processing?

问题描述

我已经阅读了几本有关图像处理的书籍和网站，但是我仍然不确定图像处理中能源"一词的真正定义.我找到了几个定义，但有时它们不匹配.

当我们在图像处理中说能量"时，意味着什么?

解决方案

在图像处理中，能量"的定义不止一个，因此取决于使用它的上下文.

当在概率框架(例如MAP(最大先验)估计)结合马尔可夫随机场的情况下制定操作时，能量用于描述信息"的度量.有时候，能量可能是最小化的消极措施，有时是最大化的积极措施.

I've read across several Image Processing books and websites, but I'm still not sure the true definition of the term "energy" in Image Processing. I've found several definition, but sometimes they just don't match.

When we say "energy" in Image processing, what are we implying?

解决方案

There is more than one definition of "energy" in image processing, so it depends on the context of where it was used.

Energy is used to describe a measure of "information" when formulating an operation under a probability framework such as MAP (maximum a priori) estimation in conjunction with Markov Random Fields. Sometimes the energy can be a negative measure to be minimised and sometimes it is a positive measure to be maximized.

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