CPC G06T 19/006 (2013.01) [G06T 3/4038 (2013.01)] | 18 Claims |
1. A measuring method, comprising:
forming an image to be tested of an object to be tested with a first characteristic pattern;
copying the image to be tested to form a plurality of images to be tested, and superimposing the plurality of images to be tested to form a to-be-tested overlapped image, wherein the to-be-tested overlapped image has a plurality of the first characteristic patterns;
forming a reference image of a reference object with a second characteristic pattern;
copying the reference image to form a plurality of reference images, and superimposing the plurality of reference images to form a reference overlapped image, wherein the reference overlapped image has a plurality of the second characteristic patterns;
superimposing the to-be-tested overlapped image and the reference overlapped image to generate a virtual moiré image, wherein the virtual moiré image has a moiré pattern, the moiré pattern is different from the plurality of the first characteristic patterns, and the moiré pattern is different from the plurality of the second characteristic patterns.
|