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。
中距离: middle distance的: 4次方是 The fourth power of 2 i ...中距离: [体育] middle distance◇中距离 (赛)跑 middle distance race空中距离: ad air distance; airline distance; bee line震中距离: epicentral distance中距离比赛: medium distance race中距离传球: medium pass中距离发射: medium range firing中距离竞速: middle distance race中距离跑: middle-distance race中距离球: medium中距离赛跑: middle distance running中距离跳投: midrange jumper中距离投篮: perimeter shot; perimetershot中距离游泳: middle distance swimming中距离侦察: medium reconnaissance中距离扬声器: mid-range loudspeaker长距离的: long range; long-range等距离的: equidistance; equidistant短距离的: near; short legged; short-haul非等距离的: non isometric近距离的: close-in; in-plant; nose-to-nose距离的矛盾: antinomy of distance; distance paradox距离的确定: determination of distance距离的销蚀: eclipse of distance