3D Overhead Image Correction Using Vehicle Size Ratios
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Solution Overview
Problem
The existing three-dimensional overhead image generation systems require calibration for each vehicle type, making it difficult and labor-intensive for users to install and configure the system on vehicles of different types, especially after purchasing a new vehicle, as the system's effectiveness depends on precise calibration of projection information and imaging device positions.
Innovation Solution
An information processing apparatus that corrects projection information based on the size ratio between a reference vehicle and a different vehicle, using a correction unit to adjust the projection information and generate an appropriate three-dimensional overhead image, reducing the need for extensive recalibration and simplifying the installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If calibration is performed for each vehicle type to ensure accurate three-dimensional overhead images, then manufacturing precision is improved, but device complexity and operational workload increase
Solution Approach 1:
The patent applies parameter changes by using size ratio parameters (length ratio and width ratio) between reference vehicle and target vehicle to transform the calibration process. Instead of performing full calibration for each vehicle type, the system changes key projection parameters based on calculated size ratios, thereby achieving accurate three-dimensional overhead images while reducing calibration complexity and operational workload.
2Measurement precision
If full calibration is performed for each vehicle type, then three-dimensional overhead image accuracy is improved, but time consumption and operational workload increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating size ratios (length ratio and width ratio) between the reference vehicle and the target vehicle before performing projection. This preliminary calculation of dimensional parameters allows the system to quickly adjust projection information without time-consuming full calibration procedures, thereby reducing calibration time while maintaining projection accuracy.
3Adaptability or versatility
If the system is designed to work with multiple vehicle types, then adaptability is improved, but the complexity of calibration procedures increases
Solution Approach 1:
The patent applies parameter changes by introducing size ratio parameters (length ratio and width ratio) that can be calculated for any vehicle type relative to a reference vehicle. This approach enables the system to adapt to multiple vehicle types by simply changing these dimensional parameters, thereby improving vehicle type compatibility while keeping the calibration procedure simple and straightforward.
Solution Approach 2:
The patent applies universality by creating a calibration method that works across different vehicle types through a unified approach. The system uses a reference vehicle and calculates size ratios to adapt projection information for any target vehicle, making the calibration system universal and multi-functional rather than requiring separate calibration procedures for each vehicle type.
Data Source
AI summary
An information processing apparatus includes a memory and a processor coupled to the memory that obtains projection information used for generating a three-dimensional overhead image by projecting a plurality of image data imaged by a plurality of imaging devices to a three-dimensional projection surface when the plurality of imaging devices are installed in a first mobile object, that inputs size information of a second mobile object that is different from the first mobile object, that corrects the projection information based on a size ratio between the first mobile object and the second mobile object, calculated based on the size information of the second mobile object, and that stores corrected projection information in the second mobile object.