并对矩形(窗口)搜索方法进行了改进，提高了搜索车牌的效率。
The rectangular (window) search method is modified, which improve the efficiency of searching the plate.
树是空间搜索的动态索引树，它的结构是利用多个维中的区间来表示空间数据对象，它是矩形访问的一种有效方法。
R-tree is a dynamic index tree of space search. Its structure use multi-dimensional region to express spatial data object. R-tree is a valid way to visit rectangle.
如果要在搜索中使用某列但不复制该列，请在表示表或表结构对象的矩形中，清除该列名旁边的复选框。
If you want to use a column for searching but not copy it, clear the check box next to the column name in the rectangle representing the table or table-structured object.
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