Piecewise cubic mapping functions for image registration
Pattern Recognition
Principal Warps: Thin-Plate Splines and the Decomposition of Deformations
IEEE Transactions on Pattern Analysis and Machine Intelligence
Elements of information theory
Elements of information theory
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Computing optimal triangulations using simulated annealing
Selected papers of the international symposium on Free-form curves and free-form surfaces
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Alignment by Maximization of Mutual Information
International Journal of Computer Vision
Introduction to Algorithms
Epipolar Geometry in Stereo, Motion, and Object Recognition: A Unified Approach
Epipolar Geometry in Stereo, Motion, and Object Recognition: A Unified Approach
Image Reconstruction Using Data-Dependent Triangulation
IEEE Computer Graphics and Applications
Accurate and High Quality Triangle Models from 3D Grey Scale Images
MICCAI '02 Proceedings of the 5th International Conference on Medical Image Computing and Computer-Assisted Intervention-Part II
Multiple View Geometry in Computer Vision
Multiple View Geometry in Computer Vision
High quality compatible triangulations
Engineering with Computers
The Amsterdam Library of Object Images
International Journal of Computer Vision
SVG rendering of real images using data dependent triangulation
Proceedings of the 20th spring conference on Computer graphics
Mesh Optimization Using an Inconsistency Detection Template
ICCV '05 Proceedings of the Tenth IEEE International Conference on Computer Vision - Volume 2
Duplicate-skins for compatible mesh modelling
Proceedings of the 2006 ACM symposium on Solid and physical modeling
An experimental evaluation of non-rigid registration techniques on Quickbird satellite imagery
International Journal of Remote Sensing
Image compression using data-dependent triangulations
ISVC'07 Proceedings of the 3rd international conference on Advances in visual computing - Volume Part I
Image registration using triangular mesh
PCM'04 Proceedings of the 5th Pacific Rim conference on Advances in Multimedia Information Processing - Volume Part I
Fast parametric elastic image registration
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
Image Morphing in Frequency Domain
Journal of Mathematical Imaging and Vision
| Hi-index | 0.00 |
This paper presents a mutual-information based optimization algorithm for improving piecewise-linear (PWL) image registration. PWL-registration techniques, which are well-suited for registering images of the same scene with relative local distortions, divide the images in conjugate triangular patches that are individually mapped through affine transformations. For this process to be accurate, each pair of corresponding image triangles must be the projections of a planar surface in space; otherwise, the registration incurs in errors that appear in the resultant registered image as local distortions (distorted shapes, broken lines, etc.). Given an initial triangular mesh onto the images, we propose an optimization algorithm that, by swapping edges, modifies the mesh topology looking for an improvement in the registration. For detecting the edges to be swapped we employ a cost function based on the mutual information (MI), a metric for registration consistency more robust to image radiometric differences than other well-known metrics such as normalized cross correlation (NCC). The proposed method has been successfully tested with different sets of test images, both synthetic and real, acquired from different angles and lighting conditions.