In this paper, two basic approaches for implementing the 9/7 Filtering Unit, used in the Discrete Wavelet Transform, are addressed. The first is the lifting scheme approach and the second is the conventional, convolutional filter approach. Two architectures are examined for each approach, a simple – straightforward one and an optimized one, substituting the multipliers used for scaling with shi...

Abstract. This paper proposes a novel technique to reduce noise whilst preserving edge sharpness during image filtering. This method is based on the image multi-resolution decomposition by a discrete wavelet transform, given a proper wavelet basis. In the transform space, edges are implicitly located and preserved, at the same time that image noise is filtered out. At each resolution level, geo...

This paper focuses on methods that can be used in football analysis by showing our implementation and results of automatic football video registration and player detection. Some of the first methods we implemented like SIFT Feature detection for video registration and background detection for player detection were not successful. However, we implemented more integrated methods like line mapping...