a fiducial point的用法和样例：
- This paper defines some local minutiae structures around core region, and according to the matching results of these structures, the fiducial point is extracted accurately.
- In addition, a novel attribute, the number of ridges between minutiae and the fiducial point, is introduced and it is invariant to transition, rotation and nonlinear distortion.
- Making a petit point pillow is exacting work.
- You needn't labor a point that is perfectly plain.