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In order to choose the most suitable optical flow algorithm for guidance, navigation and control of flying vehicles with high speed, the paper focuses mainly on the computational accuracy and efficiency analysis of five optical flow algorithms for large displacement. The five optical low algorithms are Horn Schunck (HS), Lucas Kanade (LK), Pyramid Lucas Kanade (PLK), Scale Invariant Feature Transform...
This paper proposes a visual navigation system for an unmanned aerial vehicle using optical flow in a GPS-denied environment. The optical flow of sequence image which is taken by monocular camera is based on block-matching algorithm, An extended Kalman filter fusing the IMU date and pressure sensor measurements is applied to estimate global position and velocity of UAV. This system applies to UAV...
Advantages and disadvantages of two common algorithms frequently used in the moving target detection: background subtraction method and frame difference method are analyzed and compared in this paper. Then based on the background subtraction method, a moving target detection algorithm is proposed. The background image used to process the next frame image is generated through superposition of the current...
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