中距离的 meaning in English

midrange

Color histogram is used widely for retrieving images , and the processing mostly concerns the choice and quantization of color space , the definition of color histogram and the distance of two points in color histogram space
基于颜色直方图的检索方法是使用最为普遍的方法，该过程主要涉及图像颜色空间的选择、颜色空间的量化、颜色直方图定义以及直方图空间中距离的定义等。
In 1998 , zhou , xiong and zhu improved sh algorithm by reducing this complexity to 2n - lg n . in this paper , we make further improvement . the overall complexity of computing distances is reduced to 3n - lg n 2 , which is only half that of sh algorithm
但是距离的计算量相对于其他基本代数或者逻辑操作来说开销比较大,所以如何降低整个算法过程中距离的计算次数成为我们考虑的重点，我们改进的目标就是使得计算距离的复杂度尽可能的小。