Analysis of Microscopic Images: A Gradient Vector Flow Based Approach

The theory of active contours is applied to microscopic images of cells. A model is developed that approximates cell borders by dynamic curves. This model is based on gradient vector flow (GVF), an external force that acts on the contours. Both active contours and the GVF force field are defined as functions that minimize certain functionals....

Automated analysis of microscopic images of cellular tissues

In this research project we investigate a variety of different approaches. A key element in our endeavour is the localising of points of interest (POI’s). These POI’s are the approximate centre points of the cells, the corners or vertices of the cells, and also the cell walls in given directions. Using these POI’s we have built some intuitive...

On-line superposition of geographical data to tiros-N type meteorological satellite images

A method is described, by which geographical data are superposed in real time to the high resolution HRPT imagery, received from the TIROS-N series satellites. The superposition of additional geographical data is important for an accurate position determination of the image data. Computations necessary for the transformation, conversion and...