Image analysis method and system for moving target positioning based on spatial modeling
A moving target and image analysis technology, applied in the field of image processing, can solve the problem of low positioning accuracy, achieve the effect of improving application specifications and promoting wide application
Active Publication Date: 2019-07-26
BEIJING HAOXIANG TECH CO LTD
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[0009] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art, to provide an image analysis method and system for realizing moving target positioning based on space modeling, and to solve the problem of realizing human body positioning in a two-dimensional coordinate system based on image processing in the prior art. Moving target positioning, the problem of low positioning accuracy
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[0050] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0051] see figure 1 , an embodiment of the present invention provides an image analysis method based on spatial modeling for moving target positioning, including:
[0052] Step S1. Determine the origin of the three-dimensional space coordinate system, and use the origin to determine the three-dimensional coordinates of all static objects in the target scene in the three-dimensional space coordinate system and store them in the database;
[0053] Step S2, establishing a mapping relationship between the two-dimensional coordinates of each pixel in the target scene image and the three-dimensional coordinates in the three-dimensional space coordinate system, and storing the mapping relationship in the database;
[0054] Step S3. According to the background difference method, it is judged whether the moving target appears ...
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The present invention specifically relates to an image analysis method and system for realizing moving target positioning based on space modeling, including: determining the origin of a three-dimensional space coordinate system, and using the origin to determine the positions of all static objects in the target scene in the three-dimensional space coordinate system Three-dimensional coordinates; establish the mapping relationship between the two-dimensional coordinates of each pixel in the target scene image and the three-dimensional coordinates in the three-dimensional space coordinate system; according to the background difference method, judge whether the moving target appears in the target scene image, if so, according to the described The first background image size of the first image acquisition device and the second background image size of the second image acquisition device calculate the two-dimensional coordinates (x, y) of the moving target in the target scene image; find the two-dimensional coordinates (x , y) corresponds to the three-dimensional coordinates (X, Y, Z). The technical solution of the present invention can solve the problem in the prior art that the positioning accuracy of the moving target of the human body is realized in the two-dimensional coordinate system based on the image processing, and the positioning accuracy is not high.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to an image analysis method and system for realizing moving target positioning based on space modeling. Background technique [0002] Today, when the world enters the video era, efficient analysis of real-time video and acquisition of accurate and effective data and information are the basic technologies supporting high-end video applications, and have very broad development prospects. [0003] Take classroom teaching as an example. At present, many classrooms have become video classrooms. By using technology to realize the spatial coordinate positioning of any object in the classroom at any point in time, the system can drive the pan-tilt camera to shoot, thus building an automatic shooting system to solve the problem. The problem that personnel investment cannot meet the growing demand for classroom recording. At the same time, the teacher's classroom trajectory map can ...
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IPC IPC(8): G06K9/32
CPCG06V10/255G06V2201/07
Inventor 王雷李宏非
Owner BEIJING HAOXIANG TECH CO LTD