Patent ID: 8503721
Filing Date: 2013-08-06
Classification: G06K,G06T

Abstract:
1. An image judgment device for judging whether or not a characteristic part of an object appears in an image frame to be shot, the characteristic part being a distinguishing aspect of the object and having a plurality of specific elements, the judgment being made by using the specific elements, the image judgment device comprising: a first storage unit that stores element characteristic information regarding a sample object in an upright position, the element characteristic information showing characteristics of each of a plurality of specific elements that a characteristic part of the sample object has; a second storage unit that stores first positional information and second positional information, the first positional information defining a position of each of a plurality of specific elements on a specific coordinate system when a standard object is in the same position as the sample object, the second positional information defining a position of each of the specific elements on the specific coordinate system when the standard object has been rotated from the upright position, the standard object having a characteristic part on which each of the specific elements is placed; an acquisition unit operable to acquire the image frame; a selection unit operable to select either the first positional information or the second positional information; an extraction processing unit operable to (i) apply the specific coordinate system to the image frame, (ii) when the first positional information is selected, acquire a partial image that is in the image frame and considered as an element specified by the first positional information, and acquire image characteristic information by extracting pixel values of the partial image in an order based on a first axis on the specific coordinate system, and (iii) when the second positional information is selected, acquire a partial image that is in the image frame and considered as an element specified by the second positional information, and acquire image characteristic information by extracting pixel values of the partial image in an order based on a second axis, the second axis being acquired by rotating the first axis in a direction the object is rotated, the order being based on the first axis being relatively the same as the order based on the second axis; and a judgment unit operable to (i) specify the element characteristic information for a specific element at a position corresponding to a position of the partial image on the specific coordinate system, (ii) evaluate, for the specific element, the partial image with use of the specified element characteristic information and the acquired image characteristic information, and (iii) judge whether or not the characteristic part having the specific element appears in the image frame.