Image Processing Device for Accurate Depth Measurement
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Solution Overview
Problem
Existing image measurement techniques fail to accurately measure distances between multiple points in an image due to variations in depth direction distances, leading to incorrect subject dimensions.
Innovation Solution
An image processing device that acquires images and depth direction distance information, allowing for the identification and display of subject regions within a distance range where measurements can be made with high accuracy, by controlling the display to highlight regions satisfying specific measurement accuracy criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If dimension measurement is performed on subjects at different depth distances using normal imaging devices, then the imaging process is simple, but the measurement accuracy deteriorates due to varying imaging magnification
Solution Approach 1:
The patent changes the parameter of imaging magnification by adjusting the focus distance of the imaging device. By setting the focus distance to match the distance to the subject, the imaging magnification is optimized for that specific depth, enabling accurate dimension measurement. The system calculates the required focus distance based on the subject's position and adjusts the imaging device accordingly, resolving the contradiction between simple imaging and accurate measurement.
2Extent of automation
If edge detection is performed to specify measurement positions, then the measurement process is automated, but the measurement accuracy remains insufficient when subjects are at different depths
Solution Approach 1:
The patent implements a feedback mechanism where the system detects the subject's position and depth distance, calculates the appropriate focus distance, and adjusts the imaging device's focus accordingly. This closed-loop feedback ensures that the imaging magnification is optimized for the specific subject being measured, maintaining high measurement accuracy while keeping the process automated. The system continuously monitors and adjusts parameters based on real-time subject information.
Data Source
AI summary
An image processing device including at least one processor and/or a circuit to function as an acquisition unit to acquire an image captured by an imaging element and information related to a distance distribution in a depth direction corresponding to the captured image, and a control unit to control display of the captured image. The control unit performs control so a first subject region in the captured image corresponding to a subject within a distance range in which a distance is measurable with a measurement accuracy equal to or higher than a reference, and a second subject region in the captured image corresponding to a subject not within the distance range are displayed so as to be distinguished from each other, from a reference distance in the depth direction. A distance that is a target of the distance measurement is a distance corresponding to measurement points designated in the image.