Patent ID: 7020194

Claim:
A method for vector descriptor representation and multimedia data retrieval, the method comprising: an orthogonal transformation step of orthogonally transforming feature values described by a vector descriptor; a feature value representation step of representing the transformed feature values from low frequency feature to high frequency feature; a quantization step of quantizing the feature values represented in the feature value representation step; a variable-length coding step of variable-length coding and storing the quantized feature values and the number of feature values which are input; a variable-length inversely coding step of extracting the feature values corresponding to the number of the feature values of the stored feature values and inversely coding the extracted feature values; an inverse quantization step of inversely quantizing the feature values inversely coded; an inversely orthogonal transformation step of inversely and orthogonally transforming the inversely quantized feature values and restoring to original feature; and a comparison step of comparing the restored feature values with feature values stored in a multimedia database and retrieving multimedia data.