Method of image feature coding and method of image search
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsShunichi Sekiguchi, Yoshihisa Yamada, James Chow, Kohtaro Asai
Life of this patent
Estimating the term…
Abstract
A feature coding unit extracts and encodes a feature of a video signal so as to generate a feature stream. A feature identifying unit checks a decoded feature obtained as a result of decoding the feature stream against a search key from a user for a match so that a video content requested by the user is retrieved.
Claims14
An image searching method using a first storage unit for storing image frames and a second storage unit for storing a feature stream having features of the image frames encoded therein, comprising the steps of:
- decoding the features stored in the second storage unit, in accordance with a search instruction from a user, the features including at least one of a representative color, a relative area, an on-screen position, a shape, a variation in position, a variation in brightness, a variation in color, a contrast of the image frame, or a contrast of a segment of the image frame;
- and
- checking the decoded features against a search criteria provided by the user for identity match.
An image searching method comprising the steps of:
- decoding features stored in a storage unit, in accordance with a search instruction from a user, the storage unit storing a feature stream having features of image frames encoded therein;
- and
- checking the decoded features against a search criteria provided by the user for identity match,
- wherein the feature stream is coded by the steps comprising:
- extracting segments of image areas from an image frame;
- attaching a segment number to each of the extracted segments;
- assigning a representative color to each of the extracted segments;
- calculating a size of a relative area of each of the segments with respect to the image frame;
- coding the representative color and the relative area to produce a feature of the image;
- and
- generating a feature stream corresponding to the image having the feature encoded therein.
Dependencies are inferred from the claim text.