PCB image mosaics algorithm based on wavelet transformation and phase correlation
Lianglun Cheng · Jisuanji yingyong yanjiu · 2009
In order to stitch images captured by camera into an entire one,this paper developed an image mosaic method.Traditional image mosaics algorithms did not work well on AOI because of optical noise and complexity.It used two-dimensio-nal wavelet transformation to get the high frequency coefficients that reflected the changes of image in horizontal and vertical direction,at the same time it removed the low coefficients that reflected the gradual changes of illumination and reduced the computational complexity.Then the algorithm used phase correlation technology to determine the location of the overlap,and achieved image fusion by weighted average method.The proposed algorithm was tested by experiments and worked well.