Mobile Camera Copier Pole with Reference Pattern for Document Scaling
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Solution Overview
Problem
Basic printers struggle to function as copiers due to fixed pixel dimension capabilities of external cameras, which fail to accurately reproduce the original size of documents, restricting the use of mobile devices like smartphones for scanning and copying.
Innovation Solution
A telescopic and swivel configured pole with a camera and a flatbed featuring a reference pattern allows for adjustable imaging, using corner detection algorithms to calculate and store DPI in an image header, enabling accurate reproduction of document size and scale.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a mobile camera is used to scan documents, then the device can capture images, but the fixed pixel dimension prevents accurate reproduction of the original document size
Solution Approach 1:
A reference pattern with known dimensions is introduced as an intermediary between the camera and the document. This reference pattern serves as a mediator that allows the system to calculate the actual document size by comparing the captured image dimensions with the known reference dimensions, thereby compensating for the fixed pixel dimension limitation of mobile cameras.
Solution Approach 2:
The system changes the parameter of DPI (dots per inch) dynamically based on the detected reference pattern. By calculating the scaling factor from the reference pattern and adjusting the DPI accordingly, the system can accurately reproduce document sizes regardless of the capture distance, transforming the fixed pixel dimension into an adaptable measurement system.
2Adaptability or versatility
If the camera distance to document varies, then different content dimensions are captured, but the fixed pixel dimension cannot accommodate this variation
Solution Approach 1:
The system uses the reference pattern to obtain feedback information about the capture conditions. By detecting the reference pattern's dimensions in the captured image and calculating the scaling factor, the system receives feedback about the actual capture distance and adjusts the DPI accordingly to ensure accurate original size reproduction.
3Ease of operation
If printing is done at default DPI or fit to page, then the printer can function with basic settings, but the printed document does not match the original size
Solution Approach 1:
The system performs preliminary calculation of the correct DPI value before printing by detecting the reference pattern and calculating the scaling factor. This preliminary action determines the appropriate DPI setting that will produce an accurate reproduction of the original document size, eliminating the need for manual DPI adjustment while maintaining size accuracy.
Data Source
AI summary
Methods and systems for copying media. A telescopic and swivel configured pole includes an arm that supports a camera for acquiring an image of media. A flat bed is configured with markers that facilitate imaging and a detection of the DPI of the image of the media located on the flat bed within a boundary of the markers. The pole is adjustable moveable in a telescopic and/or swivel manner for an acquisition and reproduction of the image in a dimensional scale representative of the actual scale of the media.