An accurate image mosaic method for part with rare feature information
Lan Bi · Machinery Design and Manufacture · 2012
Focused on the problem that part image with rare feature information is hard to mosaic,an accurate image mosaic method based on phase correlation algorithm and closed loop motion control is proposed to make full use of the comprehensive advantages of the software and hardware.With a part with enough feature information as an object,this method captures serial images of the part when imaging system moves along X axis and Y axis respectively and does pretreatment,and then solves registration parameters using phase correlation algorithm on two adjacency images.With the support of good repeatability of closed loop motion control system for vision measuring machine,the solved image registration parameter can be used as system registration parameter to mosaic image of the part with rare feature information based on system registration parameter directly.Image mosaic experiment of typical part shows the proposed image mosaic method has advantages that the image mosaic for part with rare feature information not only has no misregistration at pixel level but also is rapid in mosaicing.