Object indexing method, object searching method, and object indexing system

An object indexing apparatus comprising one or more processors carrying out functions of an initializing unit, a first indexing unit, and a second indexing unit;

• the initializing unit dividing at least one first data container and at least one second data container, and initialize respectively the first and the second data containers by using a first data indexer and a second data indexer, the first and second data indexers being used respectively to fill the first and the second data containers and build data structures in the first and the second data containers;
• wherein the first data indexer is a classifying indexer and the first data container is initialized by selecting predefined category representation vectors characterizing the classifying indexer according to a predefined category representation vectors template being selected, and loading the predefined category representation vectors in the first data container, the predefined category representation vectors templates being separately built based on the data of respective second data container when the size of data in the respective second data container reaches a predefined size;
• the first indexing unit adding an input feature vector of a specific object into a first data container currently being filled by using the first data indexer;
• and
• the second indexing unit configured to, when data size in the first data container currently being filled has reached a threshold, selecting another first data container as the first data container to be filled next, and converting bulk data in the first data container previously being filled into one available second data container by using the second data indexer;
• wherein the sizes of the first and the second data containers are set such that a time period in which the second data indexer converts the bulk data into the second data container is no larger than a time period in which the first data indexer fills the first data container to the threshold.

A non-transitory computer-readable medium storing a program for causing a computer to execute an object indexing method, the method comprising:

• dividing at least one first data container and at least one second data container, and initializing respectively the first and the second data containers by using a first data indexer and a second data indexer, the first and second data indexers being used respectively to fill the first and the second data containers and build data structures in the first and the second data containers, wherein the first data indexer is a classifying indexer and the first data container is initialized by selecting predefined category representation vectors characterizing the classifying indexer according to a predefined category representation vectors template being selected, and loading the predefined category representation vectors in the first data container, the predefined category representation vectors templates being separately built based on the data of respective second data container when the size of data in the respective second data container reaches a predefined size;
• adding an input feature vector of a specific object into a first data container currently being filled by using the first data indexer;
• and
• when data size in the first data container currently being filled has reached a threshold, selecting another first data container as the first data container to be filled next, and converting bulk data in the first data container previously being filled into one available second data container by using the second data indexer;
• wherein the sizes of the first and the second data containers are set such that a time period in which the second data indexer converts the bulk data into the second data container is no larger than a time period in which the first data indexer fills the first data container to the threshold.