Method for identifying, tracking and converting target based on confidence degree and multi-frame judgement

A target recognition and confidence level technology, applied in character and pattern recognition, image analysis, instruments, etc., can solve problems such as recognition errors

Inactive Publication Date: 2011-08-24
HUAZHONG UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

In the conversion process, recognition errors may occur. In this case, how to avoid the impact of the wrong recognition results on the tracking stage, and select the correct recognition results ...

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  • Method for identifying, tracking and converting target based on confidence degree and multi-frame judgement
  • Method for identifying, tracking and converting target based on confidence degree and multi-frame judgement
  • Method for identifying, tracking and converting target based on confidence degree and multi-frame judgement

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Embodiment Construction

[0088] The present invention provides an integrated conversion algorithm for target recognition and tracking based on the confidence information of the target recognition result and the recognition results of continuous multi-frames, using the binomial distribution theory for comprehensive judgment, so that the working state of the automatic target recognition system can be quickly and efficiently Accurately and reliably transition from the target recognition phase to the tracking phase. In the specific implementation process, it is assumed that the conversion algorithm must switch to the tracking state after K times of target recognition at most. According to different system requirements, the value of K is also different, K∈[3,44], K=5 in this embodiment.

[0089] (1) Image input, input the kth frame real-time image I k and template images Z, I k (i, j) represents the real-time image I k The gray value of the i-th row and j-column pixel point, the size of the template ima...

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Abstract

The invention discloses an integrated method for identifying and tracking a target based on confidence degree and multi-frame judgement, comprising the following steps of: (1) inputting an image; (2) carrying out histogram drawing on a grey-scale image; (3) identifying the position of the target in the image, and giving the confidence degree of the identification result; (4) determining whether the position of the identified target is consistent or not, and classifying the identification results with the same position into a class; (5) calculating the correct probability that a certain position belongs to the target according to the confidence degrees of the identification results and continuous multi-frame identification results by utilizing the Binomial distribution theory; and (6) selecting one image with the highest correct probability as an initial reference frame in a tracking stage and taking the identification result of the image as the reference position of the target. In the invention, the confidence degree of target identification results and the identification results of continuous multiple frames are subjected to comprehensive judgement, thus the operating mode of an automatic target identification system can be automatically, accurately and reliably converted into the target tracking stage from a target identifying stage.

Description

technical field [0001] The invention belongs to the field of automatic target recognition, and specifically relates to a method for target recognition tracking conversion, which uses the confidence degree of the target recognition result and the recognition results of continuous multi-frames to make a comprehensive judgment, so that the working mode of the automatic target recognition system can be automatically determined by the target recognition phases are accurately and reliably converted to target tracking phases. Background technique [0002] To complete the automatic recognition of the target, the computer vision system often needs to go through the stages of detection, recognition and tracking. Among them, the detection and recognition stage realizes the task of discovering and confirming the target, and the algorithm in this stage often takes a lot of time. At the same time, due to the influence of image quality, pose or scale changes, it is impossible to guarantee...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06T7/20
Inventor 鄢睿丞曹治国覃月明张旋王文武
Owner HUAZHONG UNIV OF SCI & TECH
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