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Enhanced browsing techniques for digital imagery and small displays facilitate the exploration process of large images often by using new ways to represent the image. Reduction of image content is such an approach mostly linked with need for strong processing power. To overcome this, we propose the use of the Discrete Wavelet Transform (DWT), which inherently separates detail and approximation of the image. By enhancing the detail and removing the approximation directly in wavelet domain, a very fast content reduction can be achieved. Due to its flexibility, JPEG2000 is used as basis for an efficient system for remote image browsing. To satisfy demands which are imposed by the use of current mobile hardware, every stage of the image communication pipeline is adapted and tightly coupled to the used browsing technique to reduce the need for processing power and bandwidth.

Remote raster image browsing based on fast content reduction for mobile environments