Cache Pre-fetching for Image Processing

This paper analyzes hardware pre-fetching techniques for caching images. Performances are evaluated with respect to different classes of image processing algorithms, namely raster-scan and propagative algorithms, common in computer vision and multimedia applications. Sequential pre-fetching and adaptive pre-fetching are compared with the proposed adaptive local pre-fetching that results to be more efficient, mirroring the two-dimensional spatial locali ty of image processing algorithms.