Three-dimensional terrain reconstruction from sequences of high-altitude infrared images

Paul Cohen; H. H. Nguyen

doi:10.1117/12.221355

29 September 1995 Three-dimensional terrain reconstruction from sequences of high-altitude infrared images

Paul Cohen, H. H. Nguyen

Proceedings Volume 2553, Infrared Spaceborne Remote Sensing III; (1995) https://doi.org/10.1117/12.221355
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

A stereoscopic approach for 3D terrain reconstruction from IR aerial image sequences is presented. The image sequence is captured in the so-called push-broom mode in which the same terrain is viewed by the aircraft from two different locations with two opposite viewing angles. Furthermore, a high frame rate IR imaging system mounted on a relatively slow speed aircraft allows the acquisition of a sub-pixel resolution image sequence, in which one physical point in the scene appears in several consecutive images at the same location. The proposed terrain reconstruction is carried out in three steps: first, two superimages (SI), representing an extended area of the viewed scene, are constructed from the forward and backward sequences. Each line of a SI is a weighted combination of a series of lines, each one extracted from a different image, at locations corresponding to the same scene elements. The determination of the set of lines in consecutive images to be combined into one line of the SI is accomplished through a correlation-based global matching procedure between images. In the second step, a multiresolution matching technique is applied on pairs of images extracted from the SIs, using a matching approach which relies on multiple matching cues in the infrared images. The final step consists of the absolute depth map computation, making use of the previous matching results and the prior knowledge about the geometrical configuration of the sensor at the two viewing locations.

Citation Download Citation

Paul Cohen and H. H. Nguyen "Three-dimensional terrain reconstruction from sequences of high-altitude infrared images", Proc. SPIE 2553, Infrared Spaceborne Remote Sensing III, (29 September 1995); https://doi.org/10.1117/12.221355

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KEYWORDS

3D image processing

Image processing

Sensors

3D acquisition

3D image reconstruction

Image resolution

Infrared imaging

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