为了监测河流的污染参数,在一些采样点上测定水质的同时,摄取该水面的黑白象片。资料经分析和判释后,发现象片的光学密度能与河水的混浊度和生化需氧量相关。已建立了象片光学密变与生化需氧量和河水混浊度的相关模型。 In order to monitor the pollution parameters of rivers, black and white images of the water surface were taken at the same time as water quality was measured at some sampling points. After analysis and interpretation of the data, it was found that the optical density of the patch can be related to the turbidity and BOD of the river water. Correlation models have been established for optical densification and BOD and river water turbidity.