In the light that the palmprint image is life longly unchangeable,clear in main features,and unique in particulars,this paper proposes an effective methool for raising palmprint identification,which combines extractions of PCA features,invariable moment features and line features thereby enhancing Palmprint Identi-fication feature matching rate.

The characteristic elements were determined, and discriminant functions established according to the characteristic elements achieve good results on discrimination.

Using fast algorithm of construction cost based on fuzzy prediction,the method was proposed that is to use weight number of characteristic element,give a time value coefficient to cost of typical engineering,choose a suitable characteristic element to count based on reality engineering conditions.

In the process konstructing parametric modeling by AutoCAD the accurate orientation of feature unit in 3D modeling is a difficult problem.

As for 3-D orthogonal woven composite,a new homogenized eigen-element method is proposed in this paper.

Through building it′ "semantic dictionary" module and " primitive-feature base" module in retrieval system, have finished the organic integration of two kinds of retrieval methods and improved the performance of image retrieval system on existing technical level.