Aspect angle estimation of targets in forward-looking infrared images using the model-based vision approach

Prabir Bhattacharya

doi:10.1117/12.179385

1 October 1994 Aspect angle estimation of targets in forward-looking infrared images using the model-based vision approach

Prabir Bhattacharya

Author Affiliations +

Optical Engineering, Vol. 33, Issue 10, (October 1994). https://doi.org/10.1117/12.179385

Abstract

We develop a model-based vision algorithm to estimate the aspect angle of a target in a forward-looking infrared (FLIR) image. In the preprocessing stage of the algorithm, a set of 3-D voxel-based models is created using a CAD/CAM package. These models are rotated about the vertical axis through a series of predetermined angles and then projected onto the horizontal plane. This gives us a database library of 2-D images. We select as signature from a given FLIR image and attempt to match it with the various images in the given database library of images using the normalized cross-correlation method. The angle of rotation corresponding to the image in the database library giving the best possible match is estimated to be the aspect angle of the signature (target). We use an algebraic approach to represent images and the process involves certain algebraic operations on the polynomials. An advantage of the algebraic approach is that a high speedup in the run time is possible if the fast Fourier transform is used to compute the polynominal multiplications involved in the processing.

Citation Download Citation

Prabir Bhattacharya "Aspect angle estimation of targets in forward-looking infrared images using the model-based vision approach," Optical Engineering 33(10), (1 October 1994). https://doi.org/10.1117/12.179385

Published: 1 October 1994

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available