求翻译：由于最大间类方差法对噪声和目标大小十分敏感。而且红外图像的目标和背景的大小比例悬殊不大，因此选择此方法作为遗传算法的最适应度函数。是什么意思？

Because the maximum inter-class variance method sensitive to noise and the target size. And infrared images of the target and background size ratio between the small, choosing this method as a genetic algorithm fitness function.

Because the maximum difference between the category of noise and target size 10 sub-sensitive. But the infrared image of the target and the background of the size disparity is small, so this method is selected as a genetic algorithm is the most adapted to function.

Because the most big room class variance law is extremely sensitive to the noise and the goal size.Moreover the infrared imagery goal and the background size proportion disparate is not big, therefore chooses this method to take the genetic algorithm the most sufficiency function.

正在翻译，请等待...

as the maximum difference between the category of noise and target size 10 sub-sensitive. But the infrared image of the target and the background of the size disparity is small, so this method is selected as a genetic algorithm is the most adapted to function. ;