Imaging device, parallax displacement correction method, and parallax displacement correction program
The imaging device enhances stereo camera systems by selecting reliable regions for parallax calculation and correction, addressing environmental limitations and improving accuracy in distance measurement.
JP7765503B2Active Publication Date: 2025-11-06ASTEMO LTD
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Patent Information
- Application Number
- JP2023574929
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-01-19
- Publication Date
- 2025-11-06
- Estimated Expiration
- 2042-01-19
AI Technical Summary
Technical Problem
Existing stereo camera systems face limitations in accurately correcting parallax displacement due to environmental constraints, particularly on roads lacking clear features, leading to unreliable parallax calculation and decreased distance measurement accuracy.
Method used
An imaging device with a first and second imaging unit, a parallax calculation unit, a region selection unit, and a parallax shift correction unit, which selects regions with high reliability, calculates parallax shift amounts, and corrects parallax shift using statistical processing to enhance accuracy.
Benefits of technology
Enables high-accuracy detection and correction of parallax displacement, improving the reliability and precision of distance measurements in various driving environments.
✦ Generated by Eureka AI based on patent content.
Abstract
Provided is an imaging device that can detect a road surface position with high reliability and that can thereby detect parallax displacement with high accuracy. This imaging device is provided with: a first imaging unit for acquiring a first captured image; and a second imaging unit that is disposed at a position away by a fixed distance from the first imaging unit and that acquires a second captured image. A parallax calculation unit calculates parallaxes in various regions in the first captured image and in various regions in the second captured image. A region selection unit selects, from the first captured image or from the second captured image, regions having a threshold value of reliability or higher as the value of each of the parallaxes. A parallax displacement amount calculation unit makes a comparison between the values of the parallaxes in the respective regions selected by the region selection unit and ideal values of parallaxes to be acquired in the regions, and obtains parallax displacement amounts of the regions. A parallax displacement correction unit corrects parallax displacements in the first imaging unit and the second imaging unit using correction amounts determined in accordance with the parallax displacement amounts of the regions.
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