Vanishing Point Calculator Using Multi-Image Feature Overlap
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Solution Overview
Problem
Existing vanishing point calculators face accuracy issues when extracting feature points from images with blurred or obstructed partition lines, leading to a decrease in the number of feature points and subsequent inaccuracies in calculating the vanishing point.
Innovation Solution
A vanishing point calculator that stores and overlaps feature points across multiple images to maintain accuracy, using a controller connected to an imaging device to extract and process edge points, and derive straight lines from rising and falling edge points to calculate the vanishing point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If feature points are extracted from a single image, then the extraction process is simple and fast, but the accuracy of vanishing point calculation decreases when partition lines are blurred or obstructed
Solution Approach 1:
The system performs preliminary actions by extracting and storing feature points from multiple images in advance before calculating the vanishing point. This allows the accumulation of sufficient feature points even when individual images have blurred or obstructed partition lines, thereby improving measurement precision without significantly increasing processing complexity at the moment of calculation.
Solution Approach 2:
The system merges feature points from multiple different images to compensate for insufficient feature points in any single image. By combining feature points across multiple images, the system ensures adequate feature point availability for accurate vanishing point calculation even when partition lines are blurred or obstructed in individual frames.
2Measurement precision
If feature points from multiple images are stored and overlapped, then the accuracy of vanishing point calculation is maintained, but the processing time and storage requirements increase
Solution Approach 1:
The system performs preliminary extraction and storage of feature points from multiple images in advance, organizing them by positional coordinates. This preliminary action allows the system to quickly retrieve and overlap feature points when needed, reducing the actual processing time during vanishing point calculation while maintaining high accuracy through multi-image feature point accumulation.
3Measurement precision
If the partition line is blurred or hidden by obstacles, then the number of feature points decreases, but the system needs to maintain accurate vanishing point calculation
Solution Approach 1:
The system merges feature points from multiple different images to compensate for the decrease in feature point quantity caused by blurred or obstructed partition lines in individual images. This merging approach ensures that sufficient feature points are available for accurate vanishing point calculation even when the partition line quality deteriorates in any single frame.
Solution Approach 2:
The system performs preliminary extraction and storage of feature points from multiple images, creating a reservoir of feature points that can be drawn upon when the partition line is blurred or hidden. This preliminary accumulation of feature points ensures that the system maintains accurate vanishing point calculation capability regardless of the quality of individual image frames.
Data Source
AI summary
A vanishing point calculator includes a controller connected to an imaging device configured to image in a vehicle traveling direction; and a storage device connected to the controller, wherein the controller is configured to: input an image imaged by the imaging device; extract positions of feature points from the image; store the positions of feature points related to a stationary object including a line segment parallel to road among the extracted feature points in the storage device for each image; overlap the feature points in a predetermined number of the images stored in the storage device based on the positions of the feature points; and calculate the position of vanishing point in the image imaged by the imaging device based on a line segment obtained by the overlapped feature points.