Military test ranges containing unexploded ordnance due to live-fire testing and training exercises are a significant safety problem in many locations. Automated cleanup of such sites is a challenging goal. Towards this end, this paper describes algorithms to detect a type of ordnance in current usage using color imagery. The techniques are designed to run in realtime using off-the-shelf hardwa...

This paper describes True-Color Night Vision cameras that are sensitive to the visible to near-infrared (V-NIR) portion of the spectrum allowing for the “true-color” of scenes and objects to be displayed and recorded under low-light-level conditions. As compared to traditional monochrome (gray or green) night vision imagery, color imagery has increased information content and has proven to enab...

Due to the existence of shadows, especially in urban environments, it is difficult to extract semantic information from aerial and high-resolution satellite images. In this paper, an efficient method of correcting shadow effects using multisource data sets in aerial color images is proposed. The proposed method has three steps. First, it accurately detects the shadowed regions using the image g...

Combining multiple types of night vision cameras, such as low-light-level visible to near infrared (VNIR), short-wave (SWIR), mid-wave (MWIR), and/or long-wave infrared (LWIR), enables the presentation of complimentary information into a single display. A great deal of developmental work has been devoted to maximizing the information in the fused imagery; however, fusion schemes that rely on so...

The assumption that values of water-leaving radiance in the near-infrared (NIR) are negligible enable aerosol radiative properties to be easily determined in the correction of satellite ocean color imagery. This is referred to as the black pixel assumption. We examine the implications of the black pixel assumption using a simple bio-optical model for the NIR water-leaving reflectance [rho(w)(la...

Modern image compression codecs produce embedded bitstreams with optimal rate-distortion properties. For natural imagery the distortion measure should by extended by a model of human color vision. The choice of the color space becomes here crucial since it has to be optimal in terms of compressibility and in terms of its visual distortion prediction properties. For three alternative color space...

For the years 1997 to 2000 it is expected that a number of new satellites will be launched into orbit by private companies which are speciied to deliver panchromatic imagery of the earth surface with a spatial resolution as ne as 1 m. In contrast to the panchromatic band, the spectrally resolved bands will have a four times coarser ground resolution. Therefore, image fusion algorithms will cert...

Recent growth of the geo-spatial information on the web has made it possible to easily access various and high quality geo-spatial datasets, such as road networks and high resolution imagery. Although there exist efficient methods to locate road intersections from road networks for route planning, there are few research activities on detecting road intersections from orthoimagery. Detected road...