Vehicle Projection Device Calibrating Panoramic Surround View Cameras
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Solution Overview
Problem
The existing panoramic surround view systems require users to visit a 4S store and use special calibration sites and equipment for recalibration, leading to time and resource wastage.
Innovation Solution
A method and system that allows the panoramic surround view system to generate and use projection instructions to project a preset pattern on the ground, enabling the surround view cameras to acquire images and generate target calibrating data, thereby calibrating and splicing the images without the need for special calibration sites and equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the existing calibration method using special calibration sites and equipment is used, then the calibration precision is ensured, but the time consumption and resource requirements increase significantly
Solution Approach 1:
The patent uses a preset projection pattern (virtual calibration target) instead of physical calibration equipment. The projection device displays a known geometric pattern that the surround view cameras capture, creating a virtual calibration target that eliminates the need for physical calibration sites and equipment while maintaining calibration accuracy
Solution Approach 2:
The patent replaces the mechanical calibration system (physical calibration sites and equipment) with a projection-based system. The projection device displays calibration patterns that are captured by cameras, substituting physical calibration infrastructure with optical projection and image processing
2Measurement precision
If the existing calibration method using special calibration sites and equipment is used, then the calibration accuracy is maintained, but the device complexity and resource requirements increase
Solution Approach 1:
The projection device is designed to serve multiple functions: it can project navigation information, vehicle information, and calibration patterns. This multi-functionality eliminates the need for dedicated calibration equipment, reducing system complexity while maintaining calibration accuracy
Solution Approach 2:
The patent uses a virtual calibration target (projected pattern) instead of physical calibration equipment. This virtual copy of a calibration target simplifies the system by eliminating complex physical calibration infrastructure while preserving the essential calibration function
3Reliability
If the vehicle visits a 4S store for calibration, then the professional calibration service is obtained, but the time loss and resource waste increase
Solution Approach 1:
The patent enables the vehicle to perform calibration autonomously using its own projection device and surround view cameras. The calibration process is initiated and executed within the vehicle without requiring external 4S store facilities, allowing users to calibrate at any time and location
Solution Approach 2:
The calibration pattern is pre-programmed into the projection device. When calibration is needed, the preset pattern is automatically projected and captured, eliminating the need for on-site preparation of calibration sites or equipment arrangement by technicians
Data Source
AI summary
The panoramic surround view system in the vehicle can control the projection device of the vehicle to project the preset pattern on the ground around the vehicle, acquire the plurality of target photographs including the preset pattern, and generate the target calibrating data of the surround view cameras according to the plurality of target photographs, so that the surround view cameras of the panoramic surround view system can be calibrated by using the target calibrating data to obtain the panoramic surround view image. Therefore, when the user needs to re-calibrate the calibrating data of the image splicing of the panoramic surround view system of the vehicle, the calibrating process can be completed by only by using the projection device of the vehicle, without using a special calibrating site and equipment, thus simplifying the calibrating operation steps and saving time.