A Visible Infrared Cascade Video Tracking Method
A video tracking and visible light technology, applied in the field of video image processing and application, can solve the problem that the short-term tracker does not have the automatic restart function, can no longer maintain the tracking state, and does not consider the weak texture characteristics of infrared images. And other issues
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[0056] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0057] Such as figure 1 As shown, a typical target tracking mechanism is mainly composed of three parts: tracker, detector, and learner.
[0058] In terms of trackers, in the visible light data channel, the target texture is clear, which is suitable for correlation tracking methods with fast calculation speed. Correlation is a measure of the similarity between two signals, and the more similar the signals, the higher the correlation. The conversion relationship between autocorrelation and convolution is: if and only if That is, when f is a Hermite matrix, the cross-correlation value is completely equivalent to the convolution value.
[0059] Therefore, the cross-correlation calculation can be done using the fast Fourier transform of equation (1):
[0060]
[0061] in Represents the Fourier transform. Assuming that the number of pixels in i...
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