The quadratic method to food spot which gains made the variance computation, rejected noise spots which were apart from other normal spots, so that it obtained the expected food distribution position.
二次方差法对已获取的食物点作方差计算，快速剔除距其他点较远的噪声点，获得食物分布的期望位置。
The principle of variance analysis was introduced briefly. The block diagram and program of computation were given.
本文简要地介绍了方差分析的原理，给出了计算机程序框图和详细的程序。
The method of minimum interclass variance needs to compute conic statistic in segmenting image, which costs a large computation but has less efficiency.
最小类内方差法分割图像时需要计算二次统计量，运算量大，效率不高。
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