Portable Device AR Virtual Image Speed Control
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Solution Overview
Problem
Portable devices struggle to provide clear and readable augmented reality (AR) services when real objects move quickly, as the virtual images overlaid on them also move rapidly, making it difficult for users to observe or obtain information from the virtual content.
Innovation Solution
A portable device equipped with a camera unit, display unit, and processor that detects marker objects, adjusts the virtual image display based on the object's position and speed, and controls the display speed to ensure readability, even when the object is moving quickly, by slowing down the virtual image if its speed exceeds a reference threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the virtual image moves at the same speed as the marker object, then the virtual image accurately follows the real object, but the virtual image becomes difficult to observe and read when the object moves fast
Solution Approach 1:
The patent implements dynamic speed adjustment of the virtual image based on the detected speed of the marker object. When the marker object moves faster than a reference speed, the virtual image's movement speed is reduced to a lower threshold, making it readable while still tracking the object. This dynamic adaptation resolves the contradiction between accurate tracking and readability.
2Reliability
If the virtual image continuously tracks the marker object, then the AR service maintains accuracy, but power consumption increases
Solution Approach 1:
The patent implements periodic detection of marker object speed and conditional termination of virtual image display. When the marker object is not detected or moves excessively fast, the display is terminated to save power. This periodic monitoring and conditional execution resolves the contradiction between continuous service and power consumption.
3Use of energy by moving object
If the virtual image display is terminated when marker detection ends, then power consumption is reduced, but user experience deteriorates when the user is still observing the location
Solution Approach 1:
The patent uses gaze detection to provide feedback on user attention. When the user's gaze is detected at a specific location, the system continues displaying the virtual image even after marker detection ends, maintaining user experience. This feedback mechanism resolves the contradiction between power saving and user experience.
Data Source
AI summary
A portable device is disclosed. A method of controlling a portable device, comprising the steps of capturing an image in front of the portable device, detecting a marker object from the image, displaying a virtual image corresponding to the marker object based on a location of the marker object, and terminating a display of the virtual image corresponding to the marker object, when the detecting of the marker object is terminated, terminate a display of the virtual image based on a first terminate mode if the gaze location of the user is detected at a first location, and terminate the display of the virtual image based on a second terminate mode if the gaze location of the user is detected at a second location.