A method for associatively querying the specific content of infrared video images

Abstract

The invention discloses a method for associated query of specific content of infrared video images, aiming at providing an efficient and accurate associated query method with high retrieval efficiency and recognition rate and simple video image feature extraction methods. The method provided by the invention is realized through the following technical scheme: capturing an infrared video clip through a slide window, calculating a two-dimensional histogram frame difference value between the images of neighbouring frames and a window threshold value of the slide window through a shot boundary detection module, obtaining a video shot boundary through hard decision of the window threshold value, and building a video clip index database of video shot boundary tags; calculating content change ratio of each video shot, extracting a key frame image through video shot content change ratio tag decision, and building an index database of the key frame tags and a key frame two-dimensional histogram feature library; calculating the two-dimensional histogram of the associated query infrared image and the degree of association with the key frame two-dimensional histogram, and performing associated content query of the infrared video according to order of the degree of association. With the method provided by the invention, the problem of associated query of infrared images and video clips is solved.

Description

technical field

[0001] The invention relates to an image and video processing method in the fields of video identification and image retrieval, in particular to technologies applied to intelligent video monitoring technology and related fields of video retrieval. Background technique

[0002] Because infrared imaging has the characteristics of passive work, strong anti-interference ability, strong target recognition ability, and all-weather work, it has been widely used in reconnaissance and surveillance in military and civilian fields. Infrared reconnaissance and surveillance equipment generates large amounts of image and video data. Many useful information in the data can only be obtained through the process of removing the false and saving the true, and removing the dross and extracting the essence. How to quickly find the content you care about in these data is an urgent problem to be solved. In order to find video clips of specific content in the infrared video of mass...

Examples

Embodiment Construction

[0019] refer to figure 1 In the embodiments described below, according to the present invention, the process flow of the method for associating and querying specific content of infrared video images is as follows:

[0020] Step S1, the shot boundary detection module uses a sliding window to intercept the infrared video segment, calculates the two-dimensional histogram frame difference between adjacent frame images and the sliding window threshold, compares the frame difference with the sliding window threshold, and determines the infrared video Shot boundary, identify the shot boundary, and establish a shot boundary index;

[0021] Step S2, the key frame extraction module calculates the SCCR value of the content change rate of each video shot and the corresponding judgment threshold, uses the video shot content change rate identification and judgment method to extract the key frame image in the video shot, identifies the key frame image, and establishes the key frame image in...

technical field

[0001] The invention relates to an image and video processing method in the fields of video identification and image retrieval, in particular to technologies applied to intelligent video monitoring technology and related fields of video retrieval. Background technique

[0002] Because infrared imaging has the characteristics of passive work, strong anti-interference ability, strong target recognition ability, and all-weather work, it has been widely used in reconnaissance and surveillance in military and civilian fields. Infrared reconnaissance and surveillance equipment generates large amounts of image and video data. Many useful information in the data can only be obtained through the process of removing the false and saving the true, and removing the dross and extracting the essence. How to quickly find the content you care about in these data is an urgent problem to be solved. In order to find video clips of specific content in the infrared video of mass...

Examples

Embodiment Construction

[0019] refer to figure 1 In the embodiments described below, according to the present invention, the process flow of the method for associating and querying specific content of infrared video images is as follows:

[0020] Step S1, the shot boundary detection module uses a sliding window to intercept the infrared video segment, calculates the two-dimensional histogram frame difference between adjacent frame images and the sliding window threshold, compares the frame difference with the sliding window threshold, and determines the infrared video Shot boundary, identify the shot boundary, and establish a shot boundary index;

[0021] Step S2, the key frame extraction module calculates the SCCR value of the content change rate of each video shot and the corresponding judgment threshold, uses the video shot content change rate identification and judgment method to extract the key frame image in the video shot, identifies the key frame image, and establishes the key frame image in...

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