Distance Measurement Device Multi-Target Dimension Derivation
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Solution Overview
Problem
Existing distance measurement devices require multiple designations and manual efforts to derive dimensions of multiple targets within a captured image, as they can only measure one target at a time, making the process inefficient for multiple target measurements.
Innovation Solution
A distance measurement device equipped with an imaging unit, a measurement unit that emits directional light rays, and a control unit that allows for simultaneous measurement and derivation of dimensions for multiple targets by adjusting the angle of view and using a deriving unit to calculate distances and focal lengths, enabling rapid derivation of dimensions for multiple targets in a single image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple targets are measured one by one using existing distance measurement devices, then measurement precision for each target can be maintained, but measurement time and operational effort increase significantly
Solution Approach 1:
The patent segments the measurement process by associating each directional light ray with a specific irradiation position and distance measurement. Multiple segmented measurements are then integrated through the deriving unit to calculate dimensions of multiple targets simultaneously, maintaining precision while reducing total measurement time.
Solution Approach 2:
The imaging unit captures all irradiation positions of multiple directional light rays in advance within a single captured image. This preliminary action allows the deriving unit to subsequently calculate dimensions of multiple targets simultaneously without requiring sequential measurements, significantly reducing measurement time while maintaining accuracy.
2Productivity
If multiple targets are measured simultaneously using the patent's method, then measurement efficiency improves, but device complexity increases due to multiple emission units and coordinating mechanisms
Solution Approach 1:
The deriving unit serves multiple functions: it derives in-image irradiation positions from the captured image, associates these positions with corresponding distances measured by the measurement unit, and calculates dimensions of multiple targets. This multi-functionality reduces the need for separate dedicated components for each function, managing device complexity while enabling simultaneous multi-target measurement.
Solution Approach 2:
The patent merges the imaging function and distance measurement function into a coordinated system where the imaging unit captures both visual information and irradiation positions, while the measurement unit measures distances to these positions. This merging allows simultaneous measurement of multiple targets without requiring completely separate systems, balancing productivity improvement with acceptable device complexity.
3Productivity
If the angle of view is adjusted to include all irradiation positions, then all targets can be measured in one imaging session, but the imaging unit's field of view requirements increase
Solution Approach 1:
The control unit dynamically adjusts the angle of view of the imaging unit based on the positions of multiple irradiation points detected by the measurement unit. This dynamic adjustment allows the system to optimize the field of view to include all necessary irradiation positions while minimizing the required angle, enabling multi-target measurement without excessively large angular requirements.
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 rapid and accurate derivation of dimensions for multiple targets within a captured image, reducing the effort required for measurement and improving efficiency by allowing multiple targets to be measured in a single imaging session.
Implementation Method 1
a measurement unit that measures a plurality of distances to the subject by emitting a plurality of directional light rays which are light rays each having directivity to the subject and receiving reflection light rays of the directional light rays
Data Source
AI summary
A distance measurement device includes an imaging unit, a measurement unit that measures a plurality of distances to the subject by emitting a plurality of directional light rays the subject and receiving reflection light rays, a control unit that controls the imaging unit to image the subject in an angle of view which includes irradiation positions of the directional light rays used in the measurement of the plurality of distances onto the subject, and a deriving unit that derives a dimension of a real-space region corresponding to an interval between a plurality of pixels associated with the in-image irradiation positions based on distances which are related to in-image irradiation positions derived as positions corresponding to the irradiation positions within a captured image acquired through imaging, among the plurality of measured distances, the interval for each distance within the captured image, and a focal length of the imaging unit.