Patent ID: 8843424
Filing Date: 2014-09-23
Classification: G06K

Abstract:
1. A detection device for detecting a plurality of classes of object data, wherein the plurality of classes are merged step-by-step into a predetermined multilayer structure according to a similarity criterion and arranged at a bottom layer as the most finely classified classes, the detection device comprising: an input circuit configured to input data to be detected; and a processor configured to execute a cascade classifier comprising a plurality of level classifiers connected in series, the plurality of level classifiers configured to perform a classification respectively on the classes at respective layers in the predetermined multilayer structure according to a from-coarse-to-fine policy, and each of the level classifiers comprising strong classifiers, a number of which corresponds to a number of the classes being classified, wherein each of the strong classifiers comprises a group of weak classifiers, and each of the weak classifiers is configured to perform a weak classification on the data to be detected using a feature, each of the level classifiers comprises a shared features list, each feature in the shared features list is shared by one or more weak classifiers respectively belonging to different strong classifiers, and the weak classifiers using a same feature and belonging to different strong classifiers have parameter values different from one another, and the cascade classifier is configured to