Selective predictor and selective predictive encoding for two-dimensional geometry compression

摘要

A selective predictor utilizes a selective prediction method for coordinate data encoding. The selective predictor may calculate multiple prediction vectors for each vertex in the shape traversal order. Then, the selective predictor selects the vector that is closest to the vertex to be estimated. In determining the multiple prediction vectors, the selective predictor considers the position of several previous vertices in the traversal order. The selective predictor outputs a correction vector for the selected prediction vector and identification information indicting the selected prediction vector.

主权项

1. A method of encoding a position of a current vertex, said method comprising:
determining a set of candidate predictions calculated from multiple vertices that preceded the current vertex; determining respective errors between the candidate predictions in the set of candidate predictions and the current vertex; selecting one of the candidate predictions for the current vertex based on its respective error; and encoding, by a processor, the current vertex as information indicating a correction vector between the current vertex and the selected candidate prediction and information indicating the selected candidate prediction, wherein the set of candidate predictions is calculated from the multiple vertices that preceded the current vertex by determining the position of the multiple vertices in a traversal order.