Meter Display Identification via QR Code Segmentation
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Solution Overview
Problem
Current meter display identification systems face challenges in accurately and efficiently reading measurement data from preprocessing apparatuses due to variations in configuration and display modes, leading to recording errors, data loss, and falsification during transfer into laboratory information systems.
Innovation Solution
A meter display identification system that includes an image acquisition module, meter type identification module, text detection module, and text identification module, utilizing a QR code for fixed positional relationships to simplify and improve the identification of target data areas, with optional database learning and direction adjustment for enhanced accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If OCR technique is used to read meter display, then automatic data collection is achieved, but identification accuracy decreases due to variations in configuration and display mode
Solution Approach 1:
The patent segments the meter display identification process into multiple stages: first identifying the figure identification code (QR code or barcode) to determine meter type, then using that information to locate and identify the target data display area, and finally performing OCR only on the identified data area. This segmentation allows the system to adapt to different meter configurations while maintaining high accuracy.
Solution Approach 2:
The patent performs preliminary identification of the figure identification code and meter type before conducting the actual data reading. By first capturing the meter display image, identifying the QR code/barcode to determine meter type, and pre-locating the target data area based on the identified meter type's characteristics, the system prepares the optimal reading parameters in advance, thereby improving subsequent OCR accuracy.
2Quantity of substance
If traditional OCR reads all display areas, then comprehensive data collection is possible, but processing time increases and efficiency decreases
Solution Approach 1:
The patent extracts and identifies only the relevant target data area from the entire meter display based on the figure identification code and meter type information. Instead of processing the complete display area, the system extracts and processes only the specific region containing the required measurement data, significantly reducing processing time while ensuring data completeness.
Solution Approach 2:
The patent applies different processing qualities to different areas of the meter display. The figure identification code area receives high-precision identification processing to determine meter type, while the target data area receives optimized OCR processing tailored to that specific meter type's display characteristics. This localized quality approach improves overall efficiency without compromising data collection completeness.
3Ease of operation
If manual reading and recording is performed, then flexibility is maintained, but time consumption increases and human error occurs
Solution Approach 1:
The patent implements an automated system that performs self-service data collection by automatically capturing the meter display image, identifying the figure identification code, determining meter type, locating the target data area, and extracting the measurement data through OCR. This eliminates the need for manual reading and recording operations entirely, achieving both time savings and error elimination while maintaining operational flexibility through programmable adaptability.
Data Source
AI summary
A meter display identification system and a meter display identification method for identifying type information of a meter included in a figure identification code displayed on the meter panel side of the meter, including an image acquisition module configured to collect image information, whose an imaging area includes a display area of the figure identification code and a display area of target data on the meter panel, of the meter panel, a meter type identification module configured to identify type information of the meter by identifying the figure identification code from image information collected by the image acquisition module, a text detection module configured to identify a display area of the target data based on the type information and a display area of the figure identification code, and a text identification module configured to perform text identification on image information in a display area of the target data are provided. According to the present invention, complexity of identification of a display area of target data is simplified, and efficiency of identification of the target data and accuracy of identification of the target data are improved.