GLSL in batch image processing

This demo considers the construction of an image processing software system for collaborative work in networked environment. This system relies on OpenGL and its GLSL subsystem. Unfortunately, even commercial softwares use OpenGL only for rotating and zooming. Moreover, there is a feature that almost all of the image editing softwares are missing: if the distortion of the transfer curve of the printing process is known, the edited picture may be predistorted before applying the final step for linear image transfer [1]. In the case of medical pictures (e.g.: color fundus images), sharpening, edge detection, contrast enhancement, contrast limited adaptive histogram equalization, gray world normalization, histogram equalization or intensity adjustment tasks arise [2]. The speed up factor is the primary concern for the batch processing, while the software is targeted to fulfill the demands for one image in real time.