Portable Image Processing Apparatus for Album Print Digitization
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Solution Overview
Problem
Conventional methods for digitizing photographic prints affixed to albums are cumbersome and risk damaging the prints, as they require removal from the album for scanning, and portable devices struggle to accurately capture specific prints due to arbitrary positional relationships.
Innovation Solution
A portable image processing apparatus and method that uses edge detection, oblique photographing correction, and color fading level detection to extract and correct specific photographic print areas within a photographed image, allowing for digitization without removing the prints from the album, utilizing a digital camera with image processing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If photographic prints are removed from the album for scanning, then digitization quality is improved, but the risk of print damage increases and operational complexity increases
Solution Approach 1:
The patent uses a digital camera to capture an image of the photographic print while it remains in the album, creating a digital copy without physical removal. The image processing apparatus then extracts the print area from the captured image, achieving digitization while eliminating the need to handle and remove the fragile print from the album.
2Ease of operation
If portable photographing devices are used to photograph prints in albums, then ease of operation is improved, but the ability to accurately identify and extract specific prints deteriorates due to arbitrary positional relationships
Solution Approach 1:
The image processing apparatus analyzes the captured image to detect edges and identify the photographic print area automatically. The system provides feedback by displaying the detected print area on a liquid crystal display, allowing the user to confirm and select the correct print. This feedback mechanism ensures accurate identification even when the print is in an arbitrary position within the album.
3Manufacturing precision
If edge detection is applied to the entire photographed image, then extraction completeness is improved, but processing time and computational load increase
Solution Approach 1:
The image processing apparatus divides the photographed image into multiple regions and performs edge detection selectively in regions where photographic prints are likely to be located. This segmentation approach maintains extraction completeness by focusing computational resources on relevant areas while significantly reducing overall processing time and computational load.
Data Source
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AI summary
When a user instructs photographing by operating an operating unit (302), an image captured by an image sensor (102) is stored as a photographed image in a memory (201). When a mode for performing color fading correction is set, the CPU (204) instructs an image processing device (203) to extract, from the photographed image, an area which is supposed to bring about color fading. The image processing device (203) generates a binary image by detecting edges of the area.