Article Recognition Tilt Detection Using Distance Sensors
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Solution Overview
Problem
Traditional article recognition apparatuses face challenges in accurately recognizing articles when they are placed leaning against each other, as the captured images differ from the registered images, leading to potential erroneous recognition.
Innovation Solution
The apparatus includes a camera and a distance sensor to capture images and measure distances, allowing the processor to determine article regions and tilt, detecting leaning placements and emitting alerts to prevent erroneous recognition by separating image regions and correcting image information based on tilt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional article recognition apparatus is used, then simple image processing is performed, but erroneous recognition occurs when articles are placed leaning against each other
Solution Approach 1:
The patent introduces depth information from a distance measurement unit to create three-dimensional spatial understanding beyond traditional two-dimensional image processing. By measuring distances from the imaging unit to multiple points on the article and calculating tilt angles, the system adds a depth dimension that enables differentiation between leaning and upright placements, resolving recognition errors without substantially increasing system complexity
Solution Approach 2:
The patent introduces tilt angle calculation as an intermediary parameter between image capture and article recognition. The tilt angle serves as a mediator that bridges the gap between visual appearance and actual article orientation, allowing the recognition unit to correctly identify articles even when their appearance in the image is distorted due to leaning placement
2Measurement precision
If image processing is performed on leaning articles, then recognition speed is maintained, but recognition accuracy deteriorates
Solution Approach 1:
The patent performs preliminary tilt angle calculation using distance measurement data before the recognition process. By pre-determining the tilt angle and using it to correct or adjust the image processing approach, the system prepares the recognition stage in advance, maintaining fast recognition speeds while improving accuracy through pre-computed spatial information
3Reliability
If distance measurement is added to detect leaning placement, then recognition accuracy improves, but device complexity increases
Solution Approach 1:
The patent makes the imaging unit serve multiple functions: it acts as both the primary image capture device for recognition and the basis for distance measurement to determine tilt angle. By utilizing the imaging unit's depth information capabilities and processing distance data through coordinate transformations, the system achieves leaning detection without adding dedicated distance measurement hardware, thus improving reliability while minimizing increases in device complexity
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 effectively prevents erroneous recognition by identifying and correcting for leaning placements, ensuring accurate article recognition and enabling reliable operation in payment systems by prompting users to rearrange articles.
Implementation Method 1
a second interface that obtains information regarding a distance from a predetermined position to the article
Data Source
AI summary
In accordance with an embodiment, an article recognition apparatus includes a first interface, a second interface, and a processor. The processor determines an article region from an image obtained by the first interface and determines a tilt of the article present in the determined article region on the basis of a distance obtained by the second interface. Further, the processor determines on the basis of the determined tilt of the article that the article is placed in the placement region in a state in which the article leans against another object.