Invisible Light Image Processing for Text Recognition Accuracy
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Solution Overview
Problem
Current image processing devices face challenges in accurately recognizing text and code information, especially when they overlap with background patterns or imprints, leading to errors in optical character recognition (OCR).
Innovation Solution
The implementation of an image processing device that uses a light source to irradiate objects with invisible light, allowing for the generation of separate visible and invisible images based on spectral reflectance differences, enabling enhanced recognition of text and code information by isolating them from overlapping elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light source irradiates an object with invisible light and a reader reads the reflected light to generate images, then the accuracy of text and code recognition is improved by isolating them from overlapping background patterns, but the device complexity increases due to the need for additional light source and image processing circuitry
Solution Approach 1:
The patent segments the image acquisition process into two distinct channels: visible light imaging and invisible light imaging. By using separate light sources (visible and invisible) and processing each wavelength range independently, the system isolates text and code information from overlapping background patterns, thereby improving recognition accuracy while managing device complexity through functional segmentation
Solution Approach 2:
The patent changes the physical parameter of light wavelength to solve the recognition problem. By irradiating the object with both visible and invisible light and analyzing the reflected light at different wavelength ranges, the system exploits the different absorption characteristics of inks and backgrounds at various wavelengths, enabling accurate text and code recognition even when overlapping with background patterns
2Reliability
If multiple images are generated from different wavelength ranges and processed to remove overlapping elements, then the reliability of information extraction is improved, but the loss of time increases due to multiple reading and processing steps
Solution Approach 1:
The patent performs preliminary action by simultaneously acquiring both visible and invisible light images in one reading operation. The image generation circuitry is pre-configured to process these images and automatically remove overlapping elements by comparing the two wavelength ranges, thereby improving information extraction reliability while minimizing time loss through automated preliminary processing
Solution Approach 2:
The patent merges the visible light image and invisible light image processing into a unified image generation circuitry that simultaneously handles both wavelength ranges. By combining the processing functions and automatically synthesizing the final image with overlapping elements removed, the system improves reliability of information extraction while reducing the time penalty that would result from separate processing steps
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
This approach significantly improves the accuracy of text and code recognition by generating images that distinguish between elements based on their absorption characteristics, reducing errors caused by overlapping features.
Implementation Method 1
a reader to read a first image from the object irradiated with the invisible light. The circuitry is configured to generate a second image from the first image read by the reader
Implementation Method 2
This approach significantly improves the accuracy of text and code recognition by generating images that distinguish between elements based on their absorption characteristics
Data Source
AI summary
An image processing device includes a light source, a reader, and circuitry. The light source is configured to irradiate an object at least with invisible light. The reader is configured to read a first image from the object irradiated with the invisible light. The circuitry is configured to generate a second image from the first image read by the reader. The circuitry is configured to recognize first information in the second image.