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Mathematical Problems in Engineering
Volume 2015, Article ID 428076, 12 pages
http://dx.doi.org/10.1155/2015/428076
Research Article

The Improved Algorithm of Fast Panorama Stitching for Image Sequence and Reducing the Distortion Errors

1Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2College of Mobile Telecommunications, Chongqing University of Posts and Telecommunications, Chongqing 401520, China

Received 20 March 2015; Revised 7 June 2015; Accepted 13 September 2015

Academic Editor: Jason Gu

Copyright © 2015 Zhong Qu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The traditional image stitching result based on the SIFT feature points extraction, to a certain extent, has distortion errors. The panorama, especially, would get more seriously distorted when compositing a panoramic result using a long image sequence. To achieve the goal of creating a high-quality panorama, the improved algorithm is proposed in this paper, including altering the way of selecting the reference image and putting forward a method that can compute the transformation matrix for any image of the sequence to align with the reference image in the same coordinate space. Additionally, the improved stitching method dynamically selects the next input image based on the number of SIFT matching points. Compared with the traditional stitching process, the improved method increases the number of matching feature points and reduces SIFT feature detection area of the reference image. The experimental results show that the improved method can not only accelerate the efficiency of image stitching processing, but also reduce the panoramic distortion errors, and finally we can obtain a pleasing panoramic result.