Method and device for recovering optical detection waste liquid

The invention provides a method and a device for recovering optical detection waste liquid. The recovery method comprises the following steps: establishing a plurality of statistical references; acquiring a waste liquid image in a transparent pipeline; performing image processing on the waste liquid image to obtain a plurality of feature data about a color feature; performing statistical calculation processing on the plurality of feature data to obtain a plurality of statistical feature values; and selecting at least one statistical benchmark from the plurality of statistical benchmarks, and comparing the selected statistical benchmark with the statistical characteristic value to judge the quality of the waste liquid. 本发明提供一种具有光学检测废液的回收方法与装置。其回收方法包括：建立多个统计基准；获取一透明管路内的废液图像；对该废液图像进行图像处理，以取得关于一颜色特征的多个特征数据；对所述多个特征数据进行一统计演算处理，以得到多种统计特征值；以及从所述多个统计基准中选择至少一统计基准与所述统计特征值进行比较，以判断出废液品质。