Method for processing monitoring video in examination room

A technology for monitoring video and processing methods, which is applied in the field of image processing, and can solve problems such as inability to realize synchronous monitoring, high cost, and inability to realize automatic analysis, prediction and utilization of massive video information.

Inactive Publication Date: 2012-11-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

The American Prometric (Prometric) testing company is the largest company in the world for computerized education and test certification services. It has created computerized test technology and management standards. It is used in computer-based test systems such as GRE and TOFEL. It has video surveillance in the test room. function, but this technology only realizes the video recording of t

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  • Method for processing monitoring video in examination room
  • Method for processing monitoring video in examination room
  • Method for processing monitoring video in examination room

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Embodiment Construction

[0050] The preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0051] A basic technique used by the present invention is the Haar feature. The Haar feature is a feature composed of two adjacent rectangles, one of which is represented by a white rectangle and the other is represented by a black rectangle. Such as figure 1 , figure 2 with image 3 As shown, the currently used Haar features are mainly divided into three categories: edge features, linear features, center features and diagonal features, which constitute all Haar feature templates. There are two kinds of rectangles, white and black, in each feature template. The feature value of the template is defined by the pixel sum of the white rectangle minus the sum of the black rectangle pixels. For grayscale images, the pixel sum is the sum of the gray value of each pixel. After the feature form is determined, the number of Haar features de...

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Abstract

The invention relates to a method for processing a monitoring video in an examination room. The method comprises the following steps of: step 1. preparing a sample image, wherein the sample image is divided into a positive sample and a negative sample, namely, an image judging a front face and an image judging a non-front face; and generating a classifier according to the sample image; step 2. receiving the monitoring video in the examination room, collecting examinee images captured by a camera from the video at each certain time intervals, classifying the images by using the classifier obtained in the step 1, and judging whether each captured image is the front face image or not; and step 3. if detecting that the non-front face images continuously exist for a certain time period, judging that an examinee is likely to have a cheating behavior, and prompting a system administer to pay attention, or carrying out treatment means of alarming, stopping an examination and the like on the examinee. With the adoption of the method for automatically processing the monitoring video in the examination room, provided by the invention, the condition that the examination room without examination monitoring personnel can be automatically monitored by using an ordinary camera with low cost can be realized.

Description

technical field [0001] The invention relates to an image processing method, in particular to a method for processing monitoring images of an examination room. Background technique [0002] At present, the traditional manual invigilation method is generally adopted in the examination at home and abroad. Some online examination systems have tentatively added video surveillance functions. The American Prometric (Prometric) testing company is the largest company in the world for computerized education and test certification services. It has created computerized test technology and management standards. It is used in computer-based test systems such as GRE and TOFEL. It has video surveillance in the test room. function, but this technology only realizes the video recording of the test environment, and cannot realize the simultaneous monitoring of each test individual and the computer. Automatic analysis, prediction and utilization of video information. At the same time, this t...

Claims

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Application Information

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IPC IPC(8): G06K9/62
Inventor 余海滨康慨宋伟来林静
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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