The current template-matching algorithm can match the target workpiece but cannot give position and orientation of irregular workpiece. Aiming at this problem, paper proposes a for workpieces based on contour phase difference. By this, one firstly gain profile curve by measuring its radius in orderly fashion then, calculate similarity template phase-shifting finally, compute rotation measure be...

Pixel-by-pixel template matching is very time-consuming. For an input image of size N N × , and the template of size W W × , the computational complexity is O( 2 2 N W‧ ), given that the object orientations in both images are coincident. When we search an object with unknown orientation, the straightforward way to do template matching is to rotate the reference template in every possible orient...