Mobile phone photographing behavior based event positioning method

A positioning method and event technology, applied to electrical components, telephone communications, program control devices, etc., can solve problems such as large errors and the need for operation training

Active Publication Date: 2015-11-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: the mobile phone is required to be placed flat and draw a straight line, the error is large

Method used

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  • Mobile phone photographing behavior based event positioning method
  • Mobile phone photographing behavior based event positioning method
  • Mobile phone photographing behavior based event positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057]The present invention utilizes the photographing behavior information of multiple people (including the position of the photographer and their photographing direction) to locate the location where the event occurred. Behavioral habits and photo-framing constraints narrow the event location solution space, and estimate the location and probability of the event based on each photo; finally, according to the location conclusions of multiple photos, the method of probability accumulation is used to determine the location of the event. The meanings of the parameter symbols to be used in this scheme are shown in Table 1 below:

[0058] Table 1 Description of parameter symbols

[0059]

[0060]

[0061] Concrete steps of the present invention are as follows:

[0062] 1. Terminal recording process

[0063] Step 1, centering on the event, use mobile phone camera software (APP) to take multiple photos from different directions to form a photo group K, and record the situat...

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PUM

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Abstract

The invention discloses a mobile phone photographing behavior based event positioning method. The method comprises the steps of: photographing a plurality of photos in different directions by utilizing mobile phone photographing software in the same place to form a photo group, and recording situational information during photographing, wherein the situational information comprises a photographing position and a camera alignment direction during mobile phone photographing; estimating an event occurrence region and dividing the event occurrence region into grids; based on the situational information of the photos, establishing a trapezoidal region and calculating positioning weights of the grids covered by the trapezoid; and calculating positioning weights of the grids covered by all the photos in the photo group to obtain an accumulated positioning weight of each grid, then determining an event positioning grid set according to a set threshold value, and determining geographical coordinates for event positioning. According to the method, a photographer is not required to additionally open an application program or execute a specific operation, so that the burden of a witness is not additionally increased; and the positioning of an event can improve the credibility of the photos and provide information for polices, medias and publics to look for the scene of the event at the same time.

Description

technical field [0001] The invention relates to the technical field of information processing, in particular to an event location method based on a spatial situation when a mobile phone takes pictures. Background technique [0002] It has become a popular behavior to use the camera of the mobile phone to record the events around us. People often use mobile phones to take pictures to record some unexpected events in life, such as street fights, fires, etc. These events are often widely concerned by the public and the media, and Many people will share it in various social media (such as QQ group, WeChat, Weibo). The location of these events is often described in words, and some social media supports GPS positioning, thereby improving the accuracy of event location. However, although GPS positioning method has high accuracy, in some cases, the location of the reporter cannot be located. to the location of the incident. Most of the existing technologies use information provide...

Claims

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Application Information

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IPC IPC(8): G06F9/44H04M1/725
Inventor 郭斌陈荟慧於志文吴文乐周兴社王柱
Owner NORTHWESTERN POLYTECHNICAL UNIV
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