Ant colony algorithm based camera calibrating method
A technology of camera calibration and ant colony algorithm, which is applied in the media field, can solve the problems of measurement result error, no ant colony algorithm, etc., and achieve the effect of reducing system error
Inactive Publication Date: 2013-09-18
BEIJING HAIMI CULTURE MEDIA
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[0005] Ant colony algorithm has been widely used, but it has not been applied in the field of camera parameter acquisition. Therefore, although people have done many discussions on the camera calibration process, there is no comprehensive application of ant colony algorithm in this process. A calibration method that reveals the relationship between camera imaging parameters, so that the measurement results will bring large errors in the calibration of the camera system
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[0045] The embodiment of the present invention provides a camera calibration method based on the ant colony algorithm. By comprehensively applying the ant colony algorithm in the camera calibration process, the parameter relationship that truly reveals the camera imaging is obtained, and the system that reduces the measurement results in the camera system calibration link error.
[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0047] like figure 1 As shown, the embodiment of the present inve...
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The embodiment of the invention discloses an ant colony algorithm based camera calibrating method which comprises the following steps: the shooting picture of a camera is calibrated according to an arc-shaped calibrating template; parameter sets which correspond to all shooting parameters are acquired through linear calibration calculation; one element is randomly selected from each parameter set,the elements are randomly searched by ants and pheromone are left on the elements after finishing searching the elements; the pheromone on the elements in each parameter set is adjusted through the preset algorithm, and the pheromone is updated according to the result of the adjustment of the pheromone on the elements until the pheromone on the elements in each parameter set is converged in an optimum solution; and the optimum solution is outputted to be used as the camera calibrating result. Due to the embodiment of the invention, the ant colony algorithm is comprehensively applied in the parameter acquiring process when a camera is calibrated, thus the parameter relationship which really discloses the camera imaging is acquired, and the measuring result error is reduced in the shootingsystem calibrating step.
Description
technical field [0001] The invention relates to the field of media technology, in particular to a camera calibration method based on an ant colony algorithm. Background technique [0002] Ant Colony Algorithm (Ant Colony Algorithm) was first proposed by Italian scholar M.Dorigo et al. in the 1990s. As a global probability selection algorithm, the ant colony algorithm creates a finite-scale artificial ant colony, and the ants cooperate with each other to search for the optimal solution to a certain problem. Each ant establishes a feasible solution from the selected initial state according to the given criteria of the problem, but this solution is likely to be a poor solution. Different individuals in the ant colony simultaneously establish many different solutions to find high-quality solutions. It is the result of all individuals cooperating with each other on a global scale. When building their own solutions, each ant does not use direct communication, but uses pheromones...
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IPC IPC(8): H04N17/00G06T7/00
Inventor 李丹
Owner BEIJING HAIMI CULTURE MEDIA