Live Image Overlay for Construction Position Transfer
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Solution Overview
Problem
Current surveying systems in geodesy and construction lack efficient methods for accurately and simply transferring construction plans into real-world positions on construction sites, often requiring cumbersome manual measurements and lacking real-time accuracy feedback.
Innovation Solution
A method and system that records position-referenced images of construction sites, overlays desired positions onto live images using template matching, and utilizes a handheld surveying device with a mobile terminal to provide position-faithful markings, enabling precise visualization and marking of construction points, such as drilled holes, directly on the site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement and marking methods are used to transfer construction plans to the site, then the process is simple and requires minimal equipment, but the accuracy and efficiency of position transfer deteriorates due to cumulative errors and time-consuming procedures
Solution Approach 1:
The patent creates a digital copy of the construction plan and overlays it onto a live video feed of the construction site. Position data from the BIM model is transferred to the video image, allowing workers to see desired positions (e.g., drilled holes) directly marked on the live site view. This eliminates manual measurement while maintaining simplicity through familiar video technology.
Solution Approach 2:
The patent introduces a video camera and image processing system as an intermediary between the construction plan and the physical site. The video feed serves as a mediator that displays both the live site and overlaid position markings, replacing direct manual measurement with an indirect visual representation that improves accuracy without requiring complex surveying equipment.
2Productivity
If traditional surveying devices are used to mark positions on the construction site, then the equipment is simple and easy to operate, but the speed and real-time capability of position transfer deteriorates due to sequential measurement requirements
Solution Approach 1:
The patent uses a live video feed that continuously displays the construction site, allowing position markings to be viewed in real-time as construction progresses. The video camera captures continuous footage, and the position overlay remains updated, providing uninterrupted visual feedback rather than discrete intermittent measurements from traditional surveying devices.
Solution Approach 2:
The system provides real-time visual feedback by overlaying desired position markings directly on the live video feed. Workers can immediately see where positions should be marked (e.g., hole locations) without waiting for sequential surveying measurements, enabling instant verification and correction of position accuracy.
3Manufacturing precision
If manual marking methods are used to indicate desired positions, then the process requires minimal technology and is easy to implement, but the accuracy and visual clarity of position indication deteriorates due to lack of real-time visualization
Solution Approach 1:
The patent uses color-coded markings and visual indicators overlaid on the video feed to distinguish different types of positions and construction elements. Desired positions such as drilled holes are marked with distinct graphical symbols and colors, providing clear visual differentiation that enhances precision without complicating the operation, as workers simply follow the visual cues on the video display.
Data Source
AI summary
A method and device for displaying desired positions in a live image of a construction site. The method mat include recording at least one position-referenced image of the construction site; linking at least one desired position to the position-referenced image; storing the position-referenced image together with desired position linkage in an electronic memory; recording a live image of the construction site, in particular in the form of a video, wherein the live image and the position-referenced image at least partially represent an identical detail of the construction site; retrieving the stored position-referenced image from the memory; fitting the position-referenced image with the live image, so that the desired position linked to the position-referenced image can be overlaid in a position-faithful manner on the live image; and position-faithful display of the desired position as a graphic marking in the live image.