AR Length Measurement Using Depth-Corrected Reference Points
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Solution Overview
Problem
Accurate measurement of the length of a subject in augmented reality is challenging due to inaccuracies in specifying start and end points by a user.
Innovation Solution
An electronic device equipped with a camera, sensor, and processor that corrects the start and end points based on depth information to measure the length accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If start point and end point are specified manually in preview image, then length measurement can be performed, but measurement precision deteriorates due to positioning inaccuracies
Solution Approach 1:
The patent introduces depth information as an intermediary element between the manual point specification and the final length measurement. By acquiring depth data for each pixel and calculating spatial distances in 3D space, the system mediates between imprecise 2D screen coordinates and accurate real-world length measurement, resolving the contradiction between ease of operation and measurement precision
Solution Approach 2:
The patent transitions from 2D screen coordinate system to 3D spatial coordinate system by incorporating depth information. This dimensionality change allows the system to calculate actual spatial distances between points, improving measurement accuracy while maintaining the simplicity of manual point selection on the 2D display
Data Source
AI summary
Disclosed in an embodiment according to the present disclosure is an electronic device comprising: a camera, a display, a sensor configured to acquire depth information about at least one object, and at least one processor electrically connected to the camera, the display and the sensor, wherein the at least one processor is configured to display, as a preview image on the display, an image acquired by driving the camera, acquire an input for designating a start point and an end point on a subject included in the preview image, acquire depth information about the subject through the sensor, correct the start point and the end point on the basis of the acquired depth information, and measure the length of the subject on the basis of the distance between the corrected start point and the corrected end point.