Title
Portable real-time color night vision
Author
Toet, A.
Hogervorst, M.A.
TNO Defensie en Veiligheid
Publication year
2008
Abstract
We developed a simple and fast lookup-table based method to derive and apply natural daylight colors to multi-band night-time images. The method deploys an optimal color transformation derived from a set of samples taken from a daytime color reference image. The colors in the resulting colorized multiband night-time images closely resemble the colors in the daytime color reference image. Also, object colors remain invariant under panning operations and are independent of the scene content. Here we describe the implementation of this method in two prototype portable dual band realtime night vision systems. One system provides co-aligned visual and near-infrared bands of two image intensifiers, the other provides co-aligned images from a digital image intensifier and an uncooled longwave infrared microbolometer. The co-aligned images from both systems are further processed by a notebook computer. The color mapping is implemented as a realtime lookup table transform. The resulting colorised video streams can be displayed in realtime on head mounted displays and stored on the hard disk of the notebook computer. Preliminary field trials demonstrate the potential of these systems for applications like surveillance, navigation and target detection. Keywords: image fusion, false color, natural color, real-time fusion, lookup tables
Subject
False color
Image fusion
Lookup tables
Natural color
Real-time fusion
Color image processing
Image fusion
Invariance
Real time systems
Table lookup
Daytime color reference
False color
Natural color
Real-time fusion
Color vision
multisensory perception
To reference this document use:
http://resolver.tudelft.nl/uuid:7d75b9a3-5d71-4290-a277-379c77d2b28c
DOI
https://doi.org/10.1117/12.775405
TNO identifier
19157
Source
In B.V. Dasarathy (Eds.), Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2008, SPIE-DSS08-DS16-2 / SPIE-6974. Bellingham, WA, USA: The International Society for Optical Engineering., 1-12
Article number
697402
Document type
conference paper