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Wi-Fi target location method combined with deep video analysis

A technology of target positioning and depth video, applied in image analysis, service based on location information, image enhancement, etc., can solve problems such as large error in calculation distance and fluctuation of RSSI value

Inactive Publication Date: 2019-06-07
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, because the RSSI value obtained by the same device in the same short period of time has large fluctuations, there is a large error in calculating the distance directly without preprocessing the RSSI value

Method used

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  • Wi-Fi target location method combined with deep video analysis
  • Wi-Fi target location method combined with deep video analysis
  • Wi-Fi target location method combined with deep video analysis

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Experimental program
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Embodiment Construction

[0091] The WiFi target positioning method combined with in-depth video analysis provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0092] Such as figure 1 As shown, the WiFi target positioning method combined with deep video analysis provided by the present invention includes the following steps carried out in order:

[0093] 1) build as figure 2Shown in conjunction with the WiFi target localization system of depth video analysis, this system comprises Kinect depth camera 1, a plurality of WiFi probes 2 and computer 3; Wherein Kinect depth camera 1 and a plurality of WiFi probes 2 are all arranged on the scene to be detected Edge; computer 3 utilizes data line to be connected with Kinect depth camera 1 and WiFi probe 2;

[0094] 2) Utilize the Kinect depth camera 1 to obtain the depth image of the human body as a video moving target in the scene to be detected, then simplify the human b...

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Abstract

A WiFi object localization method combined with deep video analysis. It includes building a WiFi target positioning system combined with in-depth video analysis; obtaining a set of human body motion trajectory points; obtaining a set of mobile terminal device motion trajectory points; forming a trajectory curve; outputting the matching results of human body motion trajectory and mobile terminal equipment trajectory. The present invention applies the depth camera in the field of WiFi positioning, and dynamically analyzes the moving trajectories of multiple targets detected by the depth camera and the WiFi probe to determine the corresponding relationship between the target and the MAC address in the scene to be detected, and then obtain each The actual location coordinates of a WiFi target. In the process of positioning, the RSSI signal value is not directly used to calculate the static distance, but the position detection function of the depth camera is used, so the positioning error can be reduced.

Description

technical field [0001] The invention belongs to the technical field of computer vision and wireless network indoor positioning, and in particular relates to a WiFi target positioning method combined with in-depth video analysis. Background technique [0002] With the proliferation of types and numbers of mobile devices (such as mobile phones, tablet computers, wearable devices, etc.) played an increasingly important role. iResearch analyzed China's location check-in service market and found that the number of location check-in service users reached 520 million in 2016, and is still growing at an annual rate of 11%. Nowadays, people-intensive places such as university campuses, airports, museums, residential areas, large shopping malls, etc. have covered WiFi hotspots for the convenience of people's all-time Internet access needs. Due to the wide coverage of WiFi infrastructure, WiFi-based positioning has become a natural choice and research hotspot. [0003] At present, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/277G06K9/00H04W4/029
CPCH04W4/029G06T2207/30196G06T2207/30241G06T2207/10016G06V20/41
Inventor 张良姜华郝凯锋
Owner CIVIL AVIATION UNIV OF CHINA