Image Calibration via Embedded Reference Patterns
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Solution Overview
Problem
Smart mobile devices lack the capability to accurately measure object dimensions, distances, and color/brightness levels in captured images without proper calibration, which limits their utility in applications requiring precise measurements.
Innovation Solution
Incorporating calibration patterns within the focus plane of the camera's field of view, such as two-dimensional bar codes or geometric patterns, that provide known characteristics, allowing the device to calculate pixel dimensions and extract measurement information for objects in the image, including dimensions, brightness, and color data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration patterns are incorporated into the camera's field of view, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-defining calibration patterns with known characteristics (such as two-dimensional bar codes or geometric patterns with specific dimensions) that are incorporated into the camera's field of view before actual measurements are taken. This pre-calibration process establishes reference data that enables subsequent measurements to be performed with high precision without requiring complex real-time calibration mechanisms.
Solution Approach 2:
The calibration pattern serves as an intermediary element between the camera system and the objects being measured. By introducing this known reference pattern into the field of view, the system can calculate pixel dimensions and measurement scales without requiring direct complex interactions between the camera and diverse measurement targets. The intermediary calibration pattern mediates the transformation from raw image data to calibrated measurements.
2Adaptability or versatility
If multiple measurement capabilities are added to smart mobile devices, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements universality by designing a calibration system that enables the smart mobile device camera to perform multiple measurement functions (two-dimensional measurements, three-dimensional measurements, distance calculations, color/brightness analysis) through a single calibration pattern incorporation. The calibration pattern serves as a universal reference that supports various measurement types without requiring separate calibration mechanisms for each function, thereby improving adaptability while controlling complexity.
Data Source
AI summary
A digital image is captured. The captured digital image includes a calibration pattern. The calibration pattern includes displayed information about the calibration pattern. The displayed information is read to obtain calibration information about the captured digital image. A new image is generated. The calibration information is stored with the new image.