Surround View Display Calibration Using High-Resolution Image Regions
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Solution Overview
Problem
Conventional surrounding view display devices face challenges in calibration accuracy due to resolution-dependent feature point detection, leading to issues like double images or image disappearance, especially when using multiple imaging devices, which also increase costs.
Innovation Solution
A display control device that combines images from multiple imaging units with varying resolution regions, using high-resolution regions for accurate alignment and superimposition, and a display control unit to manage these regions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple imaging devices are used to capture surrounding video images, then the coverage area increases, but the calibration accuracy deteriorates due to resolution-dependent feature point detection
Solution Approach 1:
The patent applies local quality by identifying and utilizing high-resolution regions within each imaging device's captured image. Instead of treating all regions uniformly, the system selectively uses only the high-resolution portions for feature point detection and calibration, while low-resolution regions are excluded from this critical process. This resolves the contradiction by ensuring that calibration accuracy is maintained through selective use of high-quality data regions, even when multiple imaging devices with varying resolution characteristics are employed to achieve broader coverage.
2Ease of operation
If feature points are detected in low-resolution regions, then the calibration process becomes simpler, but image integrity deteriorates due to double images or image disappearance at long distances
Solution Approach 1:
The system implements local quality by spatially differentiating between high-resolution and low-resolution regions within the captured images. The calibration process is designed to operate exclusively on high-resolution regions where feature points are reliably detected, ensuring both simplicity and reliability. Low-resolution regions are identified and excluded from feature point detection, preventing the generation of unreliable calibration data that would lead to double images or image disappearance issues.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of a resolution determination unit that acts as a gatekeeper between the raw captured images and the feature point detection process. This intermediary evaluates the resolution characteristics of different regions and selectively permits feature point detection only in high-resolution areas. This mediator ensures that the calibration process maintains image integrity by preventing the use of low-resolution data, while still allowing the system to process multiple imaging devices efficiently.
3Productivity
If images are combined using feature points from regions with large distortion, then the calibration speed increases, but manufacturing precision deteriorates due to errors at long distances
Solution Approach 1:
The patent applies local quality by implementing spatially selective feature point detection that identifies and utilizes only high-resolution regions with minimal distortion. The system analyzes the resolution characteristics of different regions within captured images and restricts feature point extraction to areas meeting quality thresholds. This approach maintains calibration speed by efficiently processing only suitable regions while ensuring high combining position accuracy, as feature points are derived exclusively from high-resolution areas free from significant distortion effects.
Data Source
AI summary
A display control device comprising: an image acquisition unit configured to acquire images from a plurality of imaging units each configured to capture an optical image having a low-resolution region and a high-resolution region; an image combining unit configured to combine the images to generate a peripheral image; and a display control unit configured to display high-resolution regions of the plurality of imaging units in a superimposed manner on the peripheral image.