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Behavior detection method and behavior detection device based on teaching video

A teaching video and behavior technology, applied in the field of teaching video image processing, can solve problems such as lack of, inability to detect the start time of abnormal behavior, abnormal behavior end time, inability to quickly detect abnormal behavior of teachers, etc.

Inactive Publication Date: 2015-01-28
SZ REACH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a behavior detection method based on teaching videos, aiming to solve the problem that in the field of teaching video image processing technology, due to the lack of behavior detection methods for teaching videos, it is impossible to quickly detect teacher's abnormal behavior, and the problem of not being able to detect when the abnormal behavior starts and when said abnormal behavior ends

Method used

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  • Behavior detection method and behavior detection device based on teaching video
  • Behavior detection method and behavior detection device based on teaching video
  • Behavior detection method and behavior detection device based on teaching video

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Embodiment 1

[0032] reference figure 1 , figure 1 It is an implementation flowchart of a behavior detection method based on instructional video provided by an embodiment of the present invention, and the details are as follows:

[0033] In step S101, a teaching video is obtained;

[0034] In step S102, preprocessing the acquired instructional video, extracting a moving object map in the instructional video, and the moving object map is an image including a moving object;

[0035] In step S103, in the teaching video, mark the start time of the abnormal behavior and the end time of the abnormal behavior, and output the detection result of the abnormal behavior.

[0036] In step S103, a detection result of the abnormal behavior of the moving object is generated according to the pre-established abnormal behavior detection model and the moving object graph. The detection result of the abnormal behavior includes the type of the abnormal behavior and the origin of the abnormal behavior. Start time and en...

Embodiment 2

[0050] reference figure 2 , figure 2 This embodiment mainly describes the implementation flowchart of step S102 of the behavior detection method based on instructional video, which is detailed as follows:

[0051] In step S201, all video frames of the teaching video are obtained, and the background model diagram is obtained by traversal comparison;

[0052] In step S202, the background model image is set as a reference image, and the moving object image in the teaching video is extracted.

[0053] reference image 3 , image 3 This is a better schematic diagram for obtaining a background model diagram provided by an embodiment of the present invention.

[0054] reference Figure 4 , Figure 4 This is a preferred schematic diagram of extracting moving object graphics provided by an embodiment of the present invention.

[0055] In the embodiment of the present invention, extracting the moving object map in the teaching video facilitates the subsequent rapid detection of the teacher's ab...

Embodiment 3

[0057] This embodiment mainly describes the implementation process of step S103 of the behavior detection method based on instructional video, which is detailed as follows:

[0058] In the first embodiment, refer to Figure 5 , Figure 5 It is the first implementation flow chart of step S103 of the behavior detection method based on instructional video when the abnormal behavior detection model is a detection model provided by the embodiment of the present invention. The details are as follows:

[0059] In step S501, in the moving object map, it is detected whether the instantaneous moving distance of the moving object is greater than a preset distance threshold;

[0060] In step S502, when it is detected that the instantaneous movement distance is greater than a preset distance threshold, a detection result of abnormal wandering of the moving object is generated.

[0061] reference Image 6 , Image 6 This is a better schematic diagram of abnormal wandering behavior detection provided...

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Abstract

The invention relates to the technical field of teaching video image processing and provides a behavior detection method and a behavior detection device based on a teaching video. The method comprises the steps of obtaining the teaching video, preprocessing the obtained teaching video to obtain a moving object image, namely an image comprising a moving object, in the teaching video, and generating the result of detection on an abnormal behavior of the moving object according to a pre-established abnormal behavior detection model and the moving object image, wherein the result of detection on the abnormal behavior comprises the type of the abnormal behavior, and the starting time and ending time of the abnormal behavior. According to the behavior detection method and the behavior detection device based on the teaching video, as the result of detection on the abnormal behavior of the moving object is generated according to the pre-established abnormal behavior detection model and the moving object image, the abnormal behavior of a teacher can be detected quickly, and the starting time of the abnormal behavior and the ending time of the abnormal behavior also can be detected.

Description

Technical field [0001] The invention belongs to the technical field of teaching video image processing, and in particular relates to a behavior detection method and device based on teaching video. Background technique [0002] Teaching video is to make the knowledge, skills and other content that teachers want to impart to students into video format to assist modern multimedia teaching. That is, it helps teachers to be more vivid and vividly show the content that cannot be actually operated in the classroom, and at the same time, it truly records the teaching content, so that learners can repeat learning anytime and anywhere. It is an indispensable and important auxiliary tool in modern teaching. [0003] However, in the field of instructional video image processing technology, due to the lack of instructional video behavior detection methods, it is impossible to quickly detect the abnormal behavior of the teacher in the massive instructional video, nor can it detect the starting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
Inventor 刘纹高廖海陶宏
Owner SZ REACH TECH
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