Fast subpel motion estimation algorithm based on group error;

The results of the paper is significant in error analyzing of dynamic calibration of systems using step-function signals as the input.

Method of error separation based on photoelectric sensor in measurement of cylindricity;

The evolution forms of a multistep method for roundness error separation and their harmonic restraint analysis;

Angle Indexing Error Separation Technique for Prism--Multi-displacement Method;

A technology of dynamic measure round error and error separating;

The part is evaluated using the techniques such as curve matching, curved face matching and error separating.