Measurement Device Platform Identification Depth Noise
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Solution Overview
Problem
Existing measurement devices face challenges in accurately determining the dimensions of objects that include a platform and a load, particularly due to noise in depth information from distant photography and difficulties in detecting depths in slatted pallets with insertion holes and varying load materials, leading to inaccurate measurements.
Innovation Solution
A measurement device that uses depth information from a depth camera and standard dimension information to identify the platform and calculate the width, depth, and height of the object, including the load, by generating measurement information and outputting it for accurate measurement, even when the accuracy of depth information is low.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If depth camera is used to photograph object from distant position, then measurement coverage is improved, but depth information accuracy deteriorates due to noise
Solution Approach 1:
The patent introduces standard dimension information as an intermediary element to bridge the gap between noisy depth camera measurements and accurate platform dimensions. By comparing depth information against pre-stored standard platform dimensions, the system can identify the platform region even when depth data contains noise, thus maintaining measurement precision while preserving distant photography capability for adequate coverage
Solution Approach 2:
The patent changes the parameter of measurement approach by combining two different information sources: noisy depth information from the camera and precise standard dimension information from a database. This parameter change allows the system to overcome the accuracy limitation of single-source depth measurement while maintaining the coverage advantage of distant photography
2Area of stationary object
If depth camera photographs slatted pallets with insertion holes, then measurement coverage is improved, but depth detection accuracy deteriorates due to structural complexity
Solution Approach 1:
Standard dimension information serves as an intermediary reference that helps the system interpret noisy depth data from slatted pallets. By matching the measured depth profile against known standard platform dimensions, the system can distinguish between actual platform boundaries and artifacts caused by slats and insertion holes, thereby maintaining accurate detection despite structural complexity
Solution Approach 2:
The patent uses standard dimension information as a digital copy or template of what the platform should look like. By comparing the actual noisy depth measurements against this idealized copy, the system can filter out measurement errors caused by slatted structures and accurately identify the true platform boundaries
3Measurement precision
If standard dimension information is combined with depth information, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The controller is designed with multi-functionality, serving both as a depth information processor and as a standard dimension database manager. By integrating these functions into a single controller, the patent avoids the need for separate dedicated hardware components for storing and comparing standard dimensions, thus improving measurement precision while minimizing the increase in device complexity
Data Source
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AI summary
A measurement device according to the present disclosure is a measurement device that measures a size of an outer shape of an object, the object including a platform present on a floor surface and a load placed on the platform. The measurement device includes: an acquisition unit that acquires depth information indicating distances from a reference position to the floor surface and the object; a storage that stores standard dimension information indicating a standard size of the platform; a controller that measures width, depth, and height dimensions of the object by identifying the platform based on the depth information and the standard dimension information, and generates measurement information indicating the measured width, depth, and height dimensions; and an output unit that outputs the measurement information.