ion levels for image fusion The fusion of an image series can take place on different abstraction levels (Fig. 1): • Within a data-level fusion (pixel-level fusion), the combination takes place at the level of the image data, i.e. the gray or RGB values. The precondition of a data fusion is that the images have been recorded with homogeneous sensors.

the sorkheh deposit in northwestern iran exhibits several readily visible general characteristics of sediment-hosted stratiform copper (ssc) mineralization. it consists of fine-grained disseminated base-metal sulfides within gray sandstones (gray beds, the basal whitish miocene sandstone and shallow-water) that overlie a thick sequence of red beds (miocene upper red formation). the host gray be...

This paper describes the implementation of a multi-channel autofocusing scheme capable of automatically extracting gray-level shape scales. The scale concept in the vision literature stands for the characteristic length over which gray-level variations in the image take place and/or the operator size used for processing the given image. The proposed scheme allows for a data-driven multichannel ...

HIV encephalitis is unusual in that neurologic damage occurs in the absence of significant infection of neuronal or glial cells. Because the predominant infected cell in the brain is the macrophage, it has been proposed that release of viral or immune activation factors from macrophages may mediate neurologic damage. Numerous studies have examined the concentration of immune activation factors ...

T. Beach, P. Gibbs, M. D. Pickles, L. Turnbull Centre for MR Investigations, University of Hull, Hull, United Kingdom Introduction Quantitative textural analysis is an established method of image classification in aerial and satellite photography. In recent years attempts have been made to utilise texture in MRI, particularly in the brain [1-6], but also in other organs such as breast [7] and l...

We have developed a visual system which adapts for varying illumination. The system has three features. First, the intenaity of the image is kept constant by automatically adjusting the iris value which i s a camera parameter. Semnd, t.lw gray levels of itn image portion or the user's interest are averaged on the assumptiorl illat localized illumination changes uniformly, and the difference bet...

Gray whales are coastal migratory baleen whales that are benthic feeders. Most of their feeding takes place in the northern Pacific Ocean with opportunistic feeding taking place during their migrations and residence on the breeding grounds. The concentrations of organochlorines and trace elements were determined in tissues and stomach contents of juvenile gray whales that were taken on their Ar...