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The problem of fitting one image into another is commonly
called "registration." Finding the best possible translation and rotation
necessary to align two images is one approach to solving this problem.
Registration is a crucial component of many remote sensing and medical
image interpretation applications. Image alignment techniques aid in
volumetric estimations of complicated structures and allow
radiologists to accurately identify changes between sequential images.
Radiologists require image alignment capabilities to correct for
patient motion and/or content displacement between images.
Numerous image registration techniques exist for correcting the alignment problems mentioned above. Unfortunately, most of these techniques, such as Correlation, fail to find a good alignment when dealing with images that differ in contrast. The Mutual Information method is able to align images independently of contrast, but it is computationally intensive. We explore a hybrid technique that utilizes both Correlation and Mutual Information. The Hybrid technique hopes to gain greater contrast independence than Correlation alone while achieving a lower running time than a pure Mutual Information technique.
Undergraduate Honors Thesis
Advisor: Daniel N. Rockmore
Bibliographic citation for this report: [plain text] [BIB] [BibTeX] [Refer]
Or copy and paste:
Karolyn A. Abram, "Registration of Images with Dissimilar Contrast using a Hybrid Method Employing Correlation and Mutual Information." Dartmouth Computer Science Technical Report TR2000-369, June 2000.
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