A sort of fast matching algorithm of Auto Rack Girder Detection System

摘要

Auto Rack Girder Detection System based on image mosaicing technique for aerial images were studied. Phase correlation method is used to complete Rack Girder image mosaicing. With Fast Fourier Transform of images, the phase information in frequency domain is used to realize image mosaicing. Considering a lot of Sequence Images having features need to be real-time stitched, improved Fourier field stitching algorithm is put forward in the paper. At first large region is restricted within overlapped areas of image, and then two-dimension pulsing signal is gotten after cross-power spectrum is counted. Registration parameters are gained through maximum of pulsing signal. To bundle image, a new weighting image smoothing algorithm based on Canny is put forward. To the extent, the algorithm has general adaptability to some factors such as lamination variation and noise and so on. The algorithm suits a lot Sequence Images fast stitching as the fast speed of stitching because of fast speed of stitching. The analytic conclusions indicate that the algorithm is adopted to fast stitch a lot of sequence images, and it has general adaptability to some factors such as lamination variation, noise and so on.