To capture tube cross-section image by camera of hand-held device, and image preprocessing, target recognition and counting.
通过手持式设备的摄像头采集钢管的横截面图像，对图像进行预处理，目标识别与计数。
2
Enumeration by plate-counting and rolling tube methods indicated that there were abundant symbiotic bacteria resided in hindgut of termite Coptotermes formosanus.