EFFICIENT CODING OF PROBABILITY DISTRIBUTIONS FOR IMAGE FEATURE DESCRIPTORS

摘要

A method for encoding or compressing probability distributions is disclosed. A first mapping of probability distribution of samples to the types from the predefined set of types is generated. A second mapping of the types in the predefined set of types to lexicographic indexes from the index space is generated. A probability distribution is quantized as a type from the predefined set of types. The type is then mapped to a lexicographic index from the index space that spans the predefined set of types. A code for the lexicographic index is then transmitted and/or stored as part of a feature descriptor.