Camera Parameter Verification by Superimposed Target Image
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Solution Overview
Problem
Camera parameters often fail to accurately represent the position and attitude of a camera, leading to errors in calculations, such as the height of individuals in monitoring camera footage, due to input errors, lens distortion, and changes in camera position over time.
Innovation Solution
An image processing device that allows users to input movements on a captured image using predetermined camera parameters to superimpose a target object with a set shape and size, presenting it on the image to verify the accuracy of the camera parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If camera parameters are obtained through calibration or past estimation, then camera parameters can be acquired for use, but the parameters may not accurately represent the current camera position and attitude due to input errors, lens distortion, or changes over time
Solution Approach 1:
The system performs preliminary verification by superimposing a generated image based on camera parameters onto the captured image before actual measurement tasks. This preliminary check allows users to confirm parameter accuracy in advance, preventing wasted time on subsequent measurements with incorrect parameters.
Solution Approach 2:
The system creates a copy of the captured image with a generated image superimposed on it. The generated image is created based on the camera parameters and overlaid on the original captured image, allowing visual comparison to verify parameter accuracy without altering the original image or requiring physical repositioning of the camera.
2Measurement precision
If users manually verify camera parameter accuracy through traditional methods, then parameter accuracy can be confirmed, but the verification process becomes complex and time-consuming
Solution Approach 1:
The system merges the captured image with a generated image that is superimposed on it. The generated image incorporates camera parameters, target object information, and spatial relationships, combining multiple verification aspects into a single integrated visual display that users can review at once.
Solution Approach 2:
The system adds a visual dimension to parameter verification by creating a superimposed display. Instead of requiring users to interpret numerical parameters or perform complex calculations, the verification is transformed into a visual task where users can directly observe whether the generated image aligns with the captured image.
3Productivity
If camera parameters are used without verification, then the monitoring system can operate continuously, but errors in parameter accuracy lead to incorrect calculation results for object height and position
Solution Approach 1:
The system performs preliminary verification using the superimposed image display before actual measurement operations. This allows quick visual confirmation of parameter accuracy, enabling the system to maintain high productivity by only performing detailed verification when necessary while ensuring measurement precision when verification is conducted.
Solution Approach 2:
The superimposed display provides immediate visual feedback to users about parameter accuracy. If the generated image does not align properly with the captured image, users can identify the discrepancy and correct the camera parameters, preventing propagation of errors into subsequent measurements.
Data Source
AI summary
An image processing device (3000) comprises an input unit (3020) and a presentation unit (3040). The input unit (3020) accepts an input of an operation for movement, on a captured image captured by a camera, of a first image which is superimposed on the captured image on the basis of a predetermined camera parameter indicating the position and attitude of the camera and which indicates a target object having a predetermined shape and a predetermined size set in a real space. The presentation unit (3040) presents the first image indicating the target object in a manner of view corresponding to a position on the captured image after the movement on the basis of the camera parameter.