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Ship tracking method based on position prediction and color similarity

A color similarity and color histogram technology, applied in image analysis, instrumentation, calculation, etc., can solve the problems of signal transmission delay, ship lag, and insufficient ship tracking technology.

Pending Publication Date: 2019-05-14
HAINAN UNIVERSITY +1
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Problems solved by technology

[0003] The existing ship tracking technology is mainly realized by positioning technology, that is, the ship sends the position to the satellite at regular intervals, and the satellite connects the multiple positions sent by the ship to form a ship's driving route, so that Complete the position tracking operation for the ship. However, due to the delay of signal transmission in this way of tracking operation, there will be a certain lag in the position tracking of the ship. In this way, for some fine operations, the existing ship tracking technology is not enough

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  • Ship tracking method based on position prediction and color similarity
  • Ship tracking method based on position prediction and color similarity
  • Ship tracking method based on position prediction and color similarity

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the embodiments given in the accompanying drawings.

[0050] refer to figure 1 As shown, a ship tracking method based on position prediction and color similarity of the present embodiment includes the following steps:

[0051] Step 1, use the UAV to take aerial photos of the ship to be tracked, and extract the P(x, y) and (w, h) of the ship to be tracked in the video frame t, where t is an arbitrary constant, and P(x , y) is the central pixel coordinate point, w is the width, and h is the height;

[0052] Step 2, detecting t+1 frame images based on the ship detection method;

[0053] Step 3, predicting the rectangular area R based on P(x, y) and (w, h) extracted in step 1;

[0054] Step 4: Search for the ship to be tracked in R. If the ship to be tracked is found, update the ship’s P(x, y), (w, h) and time series and return to step 1. If no ship is found, tracked ships, proceed to th...

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Abstract

The invention discloses a ship tracking method based on position prediction and color similarity, and the method comprises the following steps: step 1, carrying out the aerial photography of a ship video needing to be tracked through an unmanned aerial vehicle, and extracting P (x, y) and (w, h) of a ship needing to be tracked in a t frame in the video; step 3, predicting a rectangular region R based on P (x, y) and (w, h) extracted in the step 1; step 4, searching a ship needing to be tracked in R; 5, judging whether the ship needing to be tracked leaves the image or not; 6, continuously judging whether the detection ship continuously loses a plurality of frames or not; and step 7, continuously judging whether the ship is a non-ship object or not. According to the ship tracking method based on the position prediction and the color similarity, through the setting of the first to seventh steps, the offshore ship can be effectively tracked in a mode of carrying out prediction through aerial photography of the unmanned aerial vehicle, and compared with a mode of adopting GPS positioning tracking in the prior art, the problem of position lag is avoided.

Description

technical field [0001] The invention relates to a ship tracking method, in particular to a ship tracking method based on position prediction and color similarity. Background technique [0002] Ship tracking technology plays a very important role in the marine field. Through ship tracking technology, people can know the specific position of the ship in the open sea, so that corresponding adjustments can be made according to the position of the ship, so that the ship can better navigate Sailing on the sea. [0003] The existing ship tracking technology is mainly realized by positioning technology, that is, the ship sends the position to the satellite at regular intervals, and the satellite connects the multiple positions sent by the ship to form a ship's driving route, so that Complete the position tracking operation for the ship. However, due to the delay of signal transmission in this way of tracking operation, there will be a certain lag in the position tracking of the shi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/90G06T7/70G06T7/246
Inventor 金志扬秦洪懋沈重高哈尔达吾力于晓龙
Owner HAINAN UNIVERSITY
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