Improved logic-based track initiation method

A track initiation and logic technology, applied in mapping and navigation, photo interpretation, instruments, etc., can solve the problems of not being able to dynamically change the response time, false detection of targets, missing targets, etc., to achieve improved accuracy, improved accuracy, Guaranteed real-time effect

Inactive Publication Date: 2014-04-16
NANJING UNIV OF SCI & TECH
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Problems solved by technology

According to the track association algorithm of the general logic method described in Document 3 (Yan Kang, multi-sensor multi-target track tracking and fusion algorithm research [D], Nanjing University of Sc...

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  • Improved logic-based track initiation method
  • Improved logic-based track initiation method
  • Improved logic-based track initiation method

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Embodiment Construction

[0019] Such as figure 1 with figure 2 As shown, the track start method based on improved logic includes the following steps:

[0020] Step 1: Perform background update processing on the captured video to obtain the updated image sequence, and register a temporary track for each tracking target with the measurement point of each tracking target in its first frame of image as the initial point, and Calculate the correlation coefficient of each tracking target, and use the correlation coefficient of each tracking target as the correlation coefficient of the corresponding temporary track; the calculation method of the correlation coefficient of each tracking target is as shown in formula (1):

[0021] w i = 0.4 | G i - G ave | > 100 0.350 | G i - G ave | 100 0.210 | G i - G ave | 50 0.1 | G i - G ave | 10 - - - ( 1 )

[0022] In formula (1), ...

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Abstract

The invention provides an improved logic-based track initiation method. The improved logic-based track initiation method comprises the steps of registering a temporary track for each tracking target by taking a measuring point of the tracking target in a first frame image as an initial point, and taking the correlation coefficient of each tracking target as the correlation coefficient of the corresponding temporary track; by taking the measuring point, in the circular correlation area of measuring points of the first frame image, of a second frame image as a second point, adding into the corresponding temporary track; when one measuring point is added into the temporary track of the tracking target, accumulating the correlation coefficient of the temporary track, and when the accumulation sum of the correlation coefficients is greater than or equal to a preset judgment threshold, adding the temporary track into a queue of temporarily successful track for carrying out track pruning, and then outputting an effective track. The improved logic-based track initiation method has different track initiation requirements after different targets are achieved, the track initiation precision can be enhanced, and the calculation time can be shortened.

Description

Technical field [0001] The invention belongs to the field of image detection and processing, and in particular relates to a track starting method based on improved logic. Background technique [0002] Due to the long distance of the target at the beginning of the track, the low detection resolution of the sensor and the poor measurement accuracy, coupled with the appearance of true and false targets, there is no real statistical law, especially under complex background conditions, which will affect conventional processing. The starting mass of the track under In order to reliably complete the target correlation, filter out clutter points, and complete the reliable start of the respective real target trajectory among many targets, a certain processing convergence time is required. Therefore, the rapid start of the trajectory requires a high trajectory. The initial success rate of the trace is contradictory. [0003] The existing track initiation methods mainly include heuristic ru...

Claims

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Application Information

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IPC IPC(8): G01C11/36
CPCG01C11/04G01C11/36
Inventor 任侃廖逸琪陆恺立余明韩鲁顾国华钱惟贤路东明
Owner NANJING UNIV OF SCI & TECH
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