Aiming to the principle of dimensional target point location in close shot photogrammetry,a new kind of calculational method of dimensional target point location is put forward based upon collinear equation intersection method.

The computer simulation of the extraction of the three-dimensional lattice;

Calibration method for stereo vision sensor based on spatial points;

For fast calculating the signed distance from spatial point to STL model, a reference ball method was put foward based on linear octree.

It analyzes conception of node design for Dacheng alley pedestrian mall in Wuxi,discusses its design method,at the same time it indicates importance of node space design to improve whole design quality.