A rapid and automatic image registration algorithm with subpixel accuracy
- 1 June 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Medical Imaging
- Vol. 16 (3) , 308-316
- https://doi.org/10.1109/42.585765
Abstract
A number of digital imaging techniques in medicine require the combination of multiple images. Using these techniques, it is essential that the images be adequately aligned and registered prior to addition, subtraction, or any other combination of the images. This paper describes an alignment routine developed to register an image of a fixed object containing a global offset error, rotation error, and magnification error relative to a second image. The described routine uses sparsely sampled regional correlation in a novel way to reduce computation time and avoid the use of markers and human interaction. The result is a fast, robust, and automatic alignment algorithm, with accuracy better than about 0.2 pixel in a test with clinical computed radiography images.Keywords
This publication has 7 references indexed in Scilit:
- Variable compensation chest radiography performed with a computed radiography system: design considerations and initial clinical experience.Radiology, 1993
- Image registration by recognition of corresponding structuresIEEE Transactions on Geoscience and Remote Sensing, 1990
- Single-exposure dual-energy computed radiography: improved detection and processing.Radiology, 1990
- Registering Landsat images by point matchingIEEE Transactions on Geoscience and Remote Sensing, 1989
- One-shot dual-energy subtraction chest imaging with computed radiography: clinical evaluation of film images.Radiology, 1988
- A Region-Based Approach to Digital Image Registration with Subpixel AccuracyIEEE Transactions on Geoscience and Remote Sensing, 1986
- Correlation Techniques of Image RegistrationIEEE Transactions on Aerospace and Electronic Systems, 1974