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Prediction of image partitions using Fourier descriptors: application to segmentation-based coding schemes

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3 Author(s)
Marques, F. ; Dept. of Signal Theory & Commun., Polytech.. Univ. of Catalonia, Barcelona, Spain ; Llorens, B. ; Gasull, A.

This paper presents a prediction technique for partition sequences. It uses a region-by-region approach that consists of four steps: region parameterization, region prediction, region ordering, and partition creation. The time evolution of each region is divided into two types: regular motion and shape deformation. Both types of evolution are parameterized by means of the Fourier descriptors and they are separately predicted in the Fourier domain. The final predicted partition is built from the ordered combination of the predicted regions, using morphological tools. With this prediction technique, two different applications are addressed in the context of segmentation-based coding approaches. Noncausal partition prediction is applied to partition interpolation, and examples using complete partitions are presented. In turn, causal partition prediction is applied to partition extrapolation for coding purposes, and examples using complete partitions as well as sequences of binary images-shape information in video object planes (VOPs)-are presented

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Image Processing, IEEE Transactions on  (Volume:7 ,  Issue: 4 )