Patent ID: 8005264
Filing Date: 2011-08-23
Classification: G06K

Abstract:
1. A method of automatically detecting and tracking successive frames in a region of interesting by an electronic imaging device, and the method being applied in an electronic imaging device, and the electronic imaging device installing a region of interesting detection (ROID) module, and the ROID module being provided for detecting an interesting region in successive frames to obtain the interesting region in each frame, and the method comprising: decomposing an input image into three features corresponding to intensity, color and direction according to a human vision principle of perceptions of intensity, color and orientation; adopting a Gaussian pyramid computation method to filter the input image and use a down sampling method to obtain a plurality of levels of pyramid representations, and each level of pyramid representations includes images of the input images at different resolutions; calculating the features of each level of pyramid representations, using a linear center-surround operator similar to a biological perception for calculating each feature, using an integral image to expedite calculating a mean value of a peripheral region, and using a difference between a small central region and a peripheral region of each feature as a feature measured value of the resolution to calculate a corresponding pyramid feature map of each feature; overlaying the corresponding pyramid feature map of each feature by a down sampling method to obtain a conspicuity map of each feature; performing a unification to the conspicuity maps of the three features, and then obtaining a saliency map of the frames by a linear combination method; performing a frame segmentation for the saliency of the frames, and marking the large region of the mean value of the conspicuity map as an interesting region of the input frame; and tracking a corresponding interesting region of later frames according to the interesting region of the input frame.