Three-dimensional image generation from an aerial photograph
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Authors
Coleman, Leland G.
Subjects
3-D image generation
Photogrammetry
Photogrammetry
Advisors
Lee, Chin Hwa
Date of Issue
1987-09
Date
September 1987
Publisher
Language
en_US
Abstract
This thesis concerns developing a program that takes an aerial photograph, and a set of Digital Terrain Elevation Data (DTED) that is defined over the area of the photograph, and generates a synthesized view that represents what a camera would see from a different location. the elevation data points are grouped into triangular panels that are projected to the reference image by three dimensional transformation equations. Shading for the synthesized image is determined from the reference image. The pixels of the reference image that fall within a triangular panel are collected and averaged. When a new observer location is selected, the panels are projected to the synthesized image plane. A z-buffer approach and a polygon fill algorithm were used to remove hidden surfaces of the synthesized view. This program is tested on both artificial and real data. Other characteristics and performance measurements of the program are also analyzed here. The quality of the synthesized image from real data was affected by the low resolution of the terrain elevation data, and yielded less desirable results than could be expected of a higher resolution terrain model.
Type
Thesis
Description
Series/Report No
Department
Department of Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
105 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.