Depth Sensor Calibration for Accurate Object Size Measurement
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Solution Overview
Problem
Manual measurement of object size, especially for irregularly shaped goods, is inefficient and inaccurate.
Innovation Solution
A device comprising a depth sensor, sensor bracket, correction assistance means, and a computer, which uses a depth sensor to capture images and calculate spatial coordinates to determine the size of an object by analyzing depth maps and solving a PnP problem, eliminating the need for manual measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual measurement is used to measure object size, then no special equipment is needed, but measurement efficiency and accuracy are low
Solution Approach 1:
The patent replaces manual mechanical measurement with an automated optical measurement system. A depth sensor captures depth information of objects on a platform, and a computer processes this data to calculate object dimensions automatically, eliminating the need for manual measurement tools and operations.
Solution Approach 2:
The measurement system performs self-measurement by automatically capturing depth data and calculating dimensions without human intervention. The computer autonomously processes the depth map generated by the sensor to determine object size, making the system self-sufficient for measurement tasks.
2Device complexity
If manual measurement is used for irregularly shaped goods, then no additional equipment is required, but measurement accuracy deteriorates
Solution Approach 1:
The patent replaces manual measurement with an automated depth sensing system that captures three-dimensional depth information. The computer processes this depth data to accurately determine dimensions of irregular objects, achieving high measurement precision while maintaining relative equipment simplicity through the use of a depth sensor and platform.
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
The solution provides efficient and accurate measurement of object size without manual intervention, improving efficiency and accuracy compared to traditional methods.
Implementation Method 1
a depth sensor... used for assisting in correcting a plane of the depth sensor
Data Source
AI summary
An apparatus, method and device for measuring the size of an object, comprising a depth sensor (2), a sensor bracket (1), a correction assistance apparatus (5), an object placement platform (4) and a computer (3). The correction assistance apparatus (5) is used for assisting in the correction of a plane of the depth sensor (2), comprises a fabric or a printing substance having black-and-white chessboard textures, and comprises a transparent flat plate, the fabric or the printing substance being laid on the object placement platform (4), and the transparent flat plate being pressed against the fabric or the printing substance. The depth sensor (2) is disposed on the sensor bracket (1) and is located in a space above the object placement platform (4). The computer (3) is connected to the depth sensor (2). The device and the method contribute to efficient and accurate calculation of the size of an object.