Low-resolution license plate images restoration based on MRF
WU Wei,YANG Xiao-min,QING Lin-bo,YANG Yi,CHEN Mo,HE Xiao-hai
(Image Information Institute, College of Electronics & Information Engineering, Sichuan University,Chengdu 610064, China)
Abstract:Since the license plate images obtained have low resolution, in order to obtain high resolution images, the paper suggested MRF based super-resolution algorithm to recovery license plate images.First divided the image into blocks, and then used MRF to model these blocks. Through the relationship between high and low resolution images in learning library,presented the high-frequency details in the low resolution image. The experimental results show that Markov random field model based super-resolution image registration algorithm obtains a better recovery results, the super-resolution license plate image is closer to the real image, with a higher peak signal to noise ratio. ......