Information Processing Device for Reference-Free 3D Coordinates
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Solution Overview
Problem
Existing distance measurement and three-dimensional coordinate calculation methods require reference points or characteristic locations that are difficult to irradiate with a laser beam, making it challenging to calculate coordinates when such points are unavailable.
Innovation Solution
An information processing device that derives an imaging position distance and designated pixel real space coordinates based on captured images from different imaging positions using pixel coordinates, focal length, and imaging pixel dimensions, without relying on specified characteristic locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference point members and reference bars are used for three-dimensional coordinate calculation, then measurement precision is improved, but device complexity and ease of operation deteriorate due to the requirement of disposing and imaging additional reference elements
Solution Approach 1:
The patent extracts the essential function of reference elements and integrates it into the imaging device itself. The imaging device includes a distance measurement unit that can measure distance to arbitrary points on the subject, eliminating the need for separate reference point members and reference bars. The calculation unit uses this integrated distance measurement capability to compute three-dimensional coordinates without requiring external reference elements.
Solution Approach 2:
The imaging device is designed to perform multiple functions: it can image the subject, measure distance to arbitrary points on the subject, and calculate three-dimensional coordinates. This multi-functionality replaces the need for separate reference elements, as the same device that captures images also provides the distance measurement data needed for coordinate calculation.
2Measurement precision
If characteristic locations are irradiated with laser beam for distance measurement, then measurement precision is improved, but adaptability deteriorates when the subject does not have such characteristic locations
Solution Approach 1:
The distance measurement unit is integrated into the imaging device and can measure distance to any point on the subject without requiring the subject to provide characteristic locations. The system uses the imaging device's own capabilities (imaging and distance measurement) to calculate three-dimensional coordinates of arbitrary points on the subject, making the system self-sufficient and adaptable to any subject.
Solution Approach 2:
Instead of requiring the subject to have characteristic locations with specific geometric properties, the patent changes the approach by using arbitrary points on the subject as measurement targets. The calculation unit processes image data and distance measurement data for these arbitrary points to compute three-dimensional coordinates, thereby adapting to any subject regardless of whether it has characteristic locations.
3Measurement precision
If multiple cameras are used for triangulation method, then three-dimensional coordinate calculation accuracy is improved, but device complexity and ease of operation worsen due to the need for precise relative positional relationships
Solution Approach 1:
The patent merges the functions of multiple cameras into a single imaging device that can capture images from different positions. The imaging device includes a distance measurement unit that works together with the imaging unit to provide both image data and distance data. This merged system eliminates the need for separate multiple cameras and their complex relative positional relationships, as the single device can measure distances to arbitrary points on the subject.
Solution Approach 2:
The distance measurement unit acts as an intermediary between the imaging unit and the calculation unit. It provides distance measurement data for arbitrary points on the subject, which the calculation unit then uses to compute three-dimensional coordinates. This intermediary component simplifies the system by replacing the complex relative positional relationship requirements of multiple cameras with a single distance measurement interface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate derivation of imaging position distance and pixel coordinates even when characteristic locations are not irradiated with a laser beam, improving the reliability and accuracy of distance and three-dimensional coordinate calculations.
Implementation Method 1
an imaging lens, and an imaging element, the imaging element being arranged at a focal point of the imaging lens
Implementation Method 2
a distance measurement unit that performs distance measurement on the basis of a reciprocating time of a laser beam emitted by an emitting unit toward a subject
Implementation Method 3
emitting directional light, which has directivity, to the subject and receiving a reflected light of the directional light
Data Source
AI summary
Provided is an information processing device including an acquisition unit that acquires a first captured image, a second captured image, and a distance to a subject, and a derivation unit that derives an imaging position distance which is a distance between the first imaging position and the second imaging position, on the basis of a plurality of pixel coordinates for specifying a plurality of pixels of more than three pixels which are present in the same planar region as an emission position irradiated with the directional light beam on the real space and correspond to the position on the real space in each of the first captured image and the second captured image which are acquired by the acquisition unit, emission position coordinates which are derived on the basis of the distance acquired by the acquisition unit, a focal length of an imaging lens, and dimensions of imaging pixels.