Raster DEM grid search method is to obtain the riverbed thalweg through a two-dimensionalmatrix search with a certain height rules.
栅格DEM搜索法是通过二维高程矩阵按照一定规则进行搜索，获取河床深泓线；
2
Each table is a literal representation of the structures shown in Tables 2 through 9, delivered as a two-dimensionalmatrix of String .
每个表都是表2至表9中所示的结构的文本表示，是作为二维矩阵String提供的。
3
Based on digital image processing and combined coding theory, two-dimensionalmatrix bar code is a symbol system processed automatically using image recognition technology.