An Improved Sequence-to-sequence Alignment Method Combined with Feature-based Image Registration Algorithm

作者：Chen, Wei-Long; He, Xiao-Hai^*; Song, Hai-Ying; Wu, Wei

来源：Journal of Information Science and Engineering, 2012, 28(3): 617-630.

• sequence-to-sequence alignment
• image registration
• super-resolution reconstruction
• psnr
• alignment accuracy
• alignment time

A feature-based sequence-to-sequence alignment method was proposed by Caspi et al., which can align multiple sequences in space-time. But this method can :not be very effective and precise in spatial alignment, due to a small number of moving objects in the scene, limited coverage of the trajectories and the short temporal duration of the trajectories. In order to solve this problem, we proposed a new sequence-to-sequence alignment method, combining the method proposed by Caspi et al. with a feature-based image registration method. In this paper, we made a comparison between our method and that of Caspi et al. Experimental results show that the presented method improves alignment precision both on X-axis orientation and on Y-axis orientation. The PSNR value is approximately improved by 13.5dB. At the same time, the time needed by Our-method will be slightly increased but can be ignored. When the results of the alignment are applied in space-time super-resolution reconstruction, the effect also proves the validity of our-method.

• 出版日期2012-5
• 单位四川师范大学; 四川大学