Image Difference Detection Using Position and Orientation Matching
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Solution Overview
Problem
Existing image display systems struggle to quickly and accurately show images corresponding to a specific location, making it difficult to detect suspicious objects in security scenarios where personnel changes frequently, as they cannot efficiently match images captured from different directions at the same position.
Innovation Solution
An image display system that utilizes a mobile terminal and server to acquire and display images based on both position and orientation, enabling accurate detection of differences between current and past images captured at similar orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If images are stored and provided based only on position information, then a large number of images from the same location can be accumulated, but it becomes difficult to quickly find the specific image capturing a particular place among multiple images taken from different directions
Solution Approach 1:
The patent adds orientation information as a new dimension to the image storage system. Instead of storing images solely by position coordinates, the system now stores images with both position and orientation data, creating a two-dimensional indexing structure that enables rapid retrieval of specific directional views without increasing search time through large image sets
Solution Approach 2:
The patent introduces orientation information as an intermediary parameter between position and image content. This intermediary enables the system to filter and select the specific image capturing a particular place by matching both position and orientation, rather than searching through all images from that position
2Reliability
If security surveys are performed multiple times with different personnel, then comprehensive coverage can be achieved, but it becomes difficult to communicate whether objects are usually placed to personnel performing immediate checks
Solution Approach 1:
The patent creates visual copies of survey results by capturing images of locations and objects. These image copies serve as information carriers that can be transmitted to subsequent personnel, replacing verbal or written communication and providing visual evidence of what is usually present at each location
Solution Approach 2:
The patent performs preliminary surveys and captures images of normal conditions before security events occur. These pre-captured images serve as reference materials that can be immediately compared during urgent security checks, eliminating the need for personnel to communicate information about usual object placement
3Speed
If personnel perform security checks immediately before important persons pass by, then response time is reduced, but they may miss suspicious objects or overreact to normal objects due to lack of information
Solution Approach 1:
The patent performs preliminary image capture of normal conditions at security locations before urgent checks are needed. These pre-captured images establish a baseline of what is normally present, enabling rapid comparison during emergency security checks without sacrificing detection accuracy
Solution Approach 2:
The patent implements a feedback mechanism where previously captured images of normal conditions are compared with current images during security checks. This feedback loop enables personnel to quickly identify deviations from normal conditions while having reference information available, reducing both false positives and missed detections
Data Source
AI summary
The present invention provides an image display system, a terminal, a method, and a program that can quickly and accurately display an image corresponding to a particular location. An image display system according to one example embodiment of the present invention includes: a current image acquisition unit configured to acquire a first image captured by a mobile terminal; an information acquisition unit configured to acquire information including a position and an orientation of the mobile terminal that has captured the first image; a past image acquisition unit configured to acquire a second image based on the position and the orientation of the mobile terminal and a position and an orientation associated with the second image stored in the past in a storage device; and a difference detection unit configured to detect a difference between the first image and the second image.