Multi-target tracking method and device
A multi-target tracking and target technology, applied in the field of multi-target tracking methods and devices, can solve problems such as low accuracy and poor real-time performance, and achieve the effect of solving time-consuming, accurate tracking, and taking into account the accuracy of algorithms
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Embodiment 1
[0055] This embodiment provides a multi-target tracking method, and the multi-target tracking method is applicable to the tracking of rigid objects, such as vehicles and bicycles. The flowchart of the multi-target tracking method is as follows figure 1 shown, including the following steps:
[0056] S1: Acquire video images. The video image can be collected by a mobile camera device or a camera device set at a fixed position.
[0057] S2: Extract key points in the video image. Preferably, the amount of calculation can be reduced by controlling the number of target trajectories in each frame of the video image, thereby improving the real-time performance of multi-target tracking. Therefore, the key point in the video image can be a Harris corner point, and the Harris corner point in the video image can be extracted.
[0058] First, assuming that the video image is I(x, y), calculate the gradient I of I(x, y) in the X and Y directions according to formula (1) x and I y .
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Embodiment 2
[0105] This embodiment provides a multi-target tracking device, which is suitable for tracking targets that are rigid bodies, such as vehicles and bicycles. The schematic diagram of the device is figure 2 shown. include:
[0106] The video image acquiring unit 10 is configured to acquire video images. The video image can be collected by a mobile camera device or a camera device set at a fixed position.
[0107] A key point extracting unit 20, configured to extract key points in the video image. Preferably, the amount of calculation can be reduced by controlling the number of target trajectories in each frame of the video image, thereby improving the real-time performance of multi-target tracking. Therefore, the key point in the video image can be a Harris corner point, and the Harris corner point in the video image can be extracted.
[0108] A key point tracking unit 30, configured to track key points in the video image. Specifically, an optical flow tracking algorithm ...
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