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| Title | Constraint-Based Interpolation |
| Document Type | Thesis |
| Keywords | computer, computer vision, image processing, magnification, graphics, image understanding |
| Abstract | Image reconstruction is the process of converting a sampled image into a continuous one prior to transformation and resampling. This reconstruction can be more accurate if two things are known: the process by which the sampled image was obtained and the general characteristics of the original image. We present a new reconstruction algorithm known as Constraint-Based Interpolation, which estimates the sampling functions found in cameras and analyzes properties of real world images in order to produce quality real-world image magnifications. To accomplish this, Constraint-Based Interpolation uses a sensor model that pushes the pixels in an interpolation to more closely match the data in the sampled image. Real-world image properties are ensured with a level-set smoothing model that smooths "jaggies" and a sharpening model that alleviates blurring. This thesis describes the three models, their methods and constraints. The effects of the various models and constraints are also shown, as well as a human observer test. A variation of a previous interpolation technique, Quad-based Interpolation, and a new metric, gradient weighted contour curvature, is presented and analyzed. |
| Author | Goggins, Daniel David 1980- |
| Department | Computer Science |
| Date Submitted | 2005-07-22 |
| Format | application:pdf |
| URL | http://contentdm.lib.byu.edu/ETD/image/etd976.pdf |
| Language | english |
| Copyright Statement | I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, and specifically allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Brigham Young University and its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation, or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
| Display Title | Constraint-Based Interpolation |
| Defense Date | 2005-04-18 |
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