Grid Map Vector Of Key Technologies

There exist difficulties about the segmentation, fine division and vector by means of scanner in the input of map data. The paper, in the way of math morphology, manages to classify the linear elements, the same type but different width in the scanning, and result in the two-valued linear image in the same level. In the fine division of the target image, a way of math morphology based on the double structure of cell stencil is put forward, which prevents the terminals and the acnodes from losing and also reduces effectively time in doing so. As the result of the framework of the fine division, vector method is formed in which its track is monitored by using dynamic change of pace about Freeman's chain code. Under the premise of ensuring its accuracy of point positions, not only is vector data obtained but its compressing is also realized with a quicker speed, more accuracy and smaller storage device.