Patent ID: 6335977
Filing Date: 2002-01-01
Classification: A63F,G06K,G06T

Abstract:
An action recognizing apparatus comprising:an image input unit for forming images of an imaged object at a plurality of imaging angles with a plurality of image sensors, and acquiring a plurality of two-dimensional images indicating motion of the imaged object, each of the two-dimensional images including a plurality of pixels; a two-dimensional motion detecting unit for calculating direction and magnitude of motion of the imaged object from the pixels of the two-dimensional images; a region specifying unit for specifying at least one specific region within the two-dimensional images where the motion of the imaged object has a magnitude at least equal to a threshold motion magnitude, wherein said region specifying unit subdivides the two-dimensional images into a plurality of scanning ranges which may overlap each other, scans each of the scanning ranges to select as the specific regions the scanning ranges having maximum averaged motion magnitude, and selects the scanning ranges having an averaged motion magnitude larger than the threshold motion magnitude as the specific regions; a three-dimensional motion detecting unit for establishing position of a specific region specified by said region specifying unit relative to the two-dimensional images, and calculating a three-dimensional position of the specific region and a three-dimensional motion of the specific region; a portion predicting unit for predicting whether the three-dimensional motion of the specific region calculated by said three-dimensional motion detecting unit corresponds to any of a plurality of respective portions of the imaged object; and an action reproducing unit for moving a model in a simulation based on the three-dimensional motion predicted by said portion predicting unit with respect to each of the plurality of portions so that the motion of the imaged object is reproduced by the model.