Image processing-based indoor positioning method and system
An indoor positioning and image processing technology, applied in location-based services, wireless communications, electrical components, etc., can solve problems such as speeding up the matching speed, shortening the search time for images, and wireless signals being easily interfered
Inactive Publication Date: 2016-01-13
SHENZHEN UNIV
View PDF5 Cites 28 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an indoor positioning method and system based on image processing, aiming at overcoming the problems in the traditional indoor positioning method that the wireless signal is easily interfered, the positioning accuracy is not high, and errors are easy to accumulate. An indoor positioning method using image matching combined with inertial sensor map matching, which can shorten the search image time, speed up the matching speed, and achieve accurate real-time positioning
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0052] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0053] The present invention provides a flow chart of a preferred embodiment of an indoor positioning method based on image processing, as shown in figure 1 As shown, the method includes:
[0054] Step S100, pre-acquire the indoor floor plan, establish a plane Cartesian coordinate system, establish reference points on the plane Cartesian coordinate system, calculate the position coordinates for each reference point and sample image feature data at the reference point position, and store them in the position fingerprint database ;
[0055] Step S200, recording the inertial sensor data of the mobile terminal in real time, when it is detected that ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an image processing-based indoor positioning method and system. The method comprises the following steps that: an indoor plane graph is obtained in advance, and reference points are established, position coordinate calculation is calculated for each reference point, and image feature data at the reference points are sampled and are stored; inertial sensor data of a mobile terminal are recorded in real time, and when it is detected that the mobile terminal photographs a current position image and transmits a positioning request, the image feature data are extracted and are transmitted to a server; the server estimates a position where a user is possibly located at present; and traverse matching is performed on pre-stored images of positions where users are possibly located at present, so that an optimal matching image can be obtained, and the coordinates of the optimal matching image are adopted as a positioning result of the position of the current user. With the image processing-based indoor positioning method and system of the invention adopted, image search time can be shortened, and matching speed can be accelerated, and real-time indoor positioning can be realized, and the accuracy of indoor positioning can be improved.
Description
technical field [0001] The present invention relates to the technical field of indoor positioning, in particular to an indoor positioning method and system based on image processing. Background technique [0002] With the development of smart phones and sensors, mobile location services (LBS) are increasingly affecting people's lives. The use of the Global Positioning System (GPS) can meet people's positioning and navigation needs outdoors. However, in such a relatively closed indoor environment, the received satellite signals are blocked and prone to refraction, which makes GPS unable to be directly used for indoor positioning and navigation. Currently commonly used indoor positioning methods include: using WIFI signal positioning, inertial navigation positioning, Bluetooth positioning, radio frequency identification (RFID) positioning, etc. In the indoor positioning process of these methods, the signal strength is easily disturbed by pedestrians walking, environmental cha...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H04W4/02H04W64/00
CPCH04W4/023H04W4/029H04W64/00
Inventor 张星刘涛李清泉
Owner SHENZHEN UNIV