3D Vision Volume Measurement Using Block Division
Solution Overview
Problem
Current volume measurement methods in logistics are inefficient and prone to errors, with traditional manual methods being slow and inaccurate, while existing automated systems are complex, expensive, and require significant space and hardware resources.
Innovation Solution
A modular 3D vision system using a combination of cameras and a structured laser emitter to collect depth information, identify object contours, perform block division, and calculate volume, allowing for fast and accurate measurements with a compact setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional manual measurement methods are used, then measurement flexibility is maintained, but measurement efficiency is low and measurement error is large
Solution Approach 1:
The patent replaces manual mechanical measurement with an automated vision-based measurement system. The system uses a camera to capture images of the object, processes these images through algorithms to identify contours and calculate volume, thereby eliminating manual intervention and significantly improving both measurement efficiency and consistency.
Solution Approach 2:
The measurement system performs self-measurement by automatically capturing images, processing them to extract geometric features, and calculating volume without requiring external manual operation. The system serves itself by integrating image capture, processing, and computation into a single automated workflow.
2Measurement precision
If existing automated measurement systems using laser scanners and multi-vision fusion are used, then measurement accuracy is improved, but device complexity increases and space requirement increases
Solution Approach 1:
The patent extracts and uses only the essential component needed for measurement - a single camera - while eliminating unnecessary components such as multiple cameras, laser scanners, and complex fusion algorithms. This extraction approach maintains measurement functionality while significantly reducing system complexity.
Solution Approach 2:
The patent replaces expensive, complex measurement equipment (laser scanners, industrial cameras) with a simpler, more economical camera-based system. The solution uses readily available camera technology and simple processing algorithms, making the system more cost-effective and easier to implement.
3Measurement precision
If existing automated measurement systems using industrial cameras are used, then measurement accuracy is improved, but area requirement increases
Solution Approach 1:
The patent segments the measurement process into distinct computational steps (image capture, contour identification, volume calculation) that can be performed by a single camera positioned above the object. This segmentation allows the system to maintain accuracy while reducing the physical space needed compared to multi-camera systems requiring lateral positioning.
4Productivity
If existing automated measurement systems are used, then measurement speed is improved, but hardware cost increases
Solution Approach 1:
The patent replaces expensive industrial cameras and laser scanners with a more economical camera-based system. The solution uses standard camera technology combined with simple processing algorithms, significantly reducing hardware costs while maintaining automated measurement speed and accuracy.
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 method enables high-speed, high-accuracy volume measurement with a reduced space requirement, overcoming the limitations of traditional methods and existing automated systems by using a simple and economical 3D vision system.
Implementation Method 1
a structured laser emitter, configured to collect a first information of a measurement area when there is no object to be measured under a current viewing field, and judge whether a depth change of the measurement area exceeds a threshold according to laser grids
Data Source
AI summary
The present patent application relates to a volume measurement method and system, an apparatus and a computer-readable storage medium. The method comprises: collecting a first information of a measurement area when there is no object to be measured and a first depth image information of the measurement area when there is an object to be measured under a current viewing angle based on a 3D vision system located above the measurement area; identifying an outer contour of the object to be measured by comparing gray values of the first information and the first depth image information collected under different viewing angles to obtain a first depth information of the outer contour of the object to be measured, and filling in an area defined by the outer contour of the object to be measured to obtain a target of object to be measured and size information of the target of object to be measured; performing block division on an outer contour area of the object to be measured according to a preset relationship between the first depth information and divided blocks to generate block information; and obtaining a volume of the object to be measured according to a preset relationship among the block information, the size information of the target of object to be measured, and a volume of the object to be measured. According to the method, measurement is performed based on 3D vision, and the objects to be measured are directly measured, so the measurement speed is fast, the measurement accuracy is high, and the measurement range is large.