Method for rapidly tracking and positioning set targets in grayscale videos
A gray-scale video, tracking and positioning technology, applied in image data processing, instruments, calculations, etc., can solve the problems of complex tracking process, increased calculation amount and complexity, slowness, etc., and achieve high tracking accuracy, fast calculation speed, Effects of adaptation to scale changes
Inactive Publication Date: 2018-06-29
XIDIAN UNIV
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The invention relates to a method for rapidly tracking and positioning set targets in grayscale videos. The method comprises the following steps of: carrying out two-dimensional Gaussian kernel cyclicconvolution on a standard target image and an image in a video frame sequence to solve cross-correlation matrixes, and processing positions of targets tracked by the cross-correlation matrixes by using ridge regression method; carrying out weighted average on a detection result of the current frame to serve as a next frame of standard target image; self-convoluting each frame of standard target image and solving a statistic feature of each frame of standard target image, and mapping characterization between two frames as scale change so as to solve scale change, in a moving process, of the target; and deconvolution is carried out on an auto-correlation matrix through discrete Fourier transformation and inverse transformation to update and learn a ridge regression parameter which is used for solving a response matrix in the next frame. The method is high in calculation speed and high in tracking precision, adopts dense sampling, is completely adapted to scale change and can be suitablefor the scenes in which targets are moved from far to near or moved from near to far.
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