Camera Device Document Scanning with Audio Haptic Feedback
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Solution Overview
Problem
Visually impaired individuals face difficulties in scanning documents using non-dedicated camera devices like smartphones, as they rely heavily on sight to position the device correctly for effective image capture.
Innovation Solution
The method involves guiding users audibly and providing haptic feedback to position a camera device correctly over a document, using sensors to detect placement, orientation, and movement, allowing for successful image capture without visual confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-dedicated camera devices are used for document scanning, then device accessibility and versatility are improved, but positioning accuracy and image capture reliability deteriorate for visually impaired users
Solution Approach 1:
The system continuously captures images and provides real-time feedback to the user through audio cues and haptic feedback. The processor analyzes whether the document is fully included in the captured image and communicates this status back to the user, enabling them to adjust positioning without visual confirmation. This closed-loop feedback system ensures reliable image capture despite the lack of visual guidance.
Solution Approach 2:
The camera device performs self-positioning assistance by using its own image-capturing sensor to detect document boundaries and provide guidance cues. The system serves itself by automatically analyzing captured images to determine proper positioning, eliminating the need for external assistance or complex manual alignment procedures.
2Measurement precision
If visual confirmation is required for proper device positioning, then image capture accuracy is improved, but ease of operation deteriorates for visually impaired individuals
Solution Approach 1:
The system replaces the visual-mechanical positioning method with an acoustic-electronic positioning system. Instead of requiring users to visually observe and manually adjust device position, the system uses the image-capturing sensor to detect document boundaries and provides audio feedback to guide positioning. This substitution maintains positioning accuracy while dramatically improving ease of operation for visually impaired users.
Solution Approach 2:
The processor acts as an intermediary between the image-capturing sensor and the user. It analyzes the captured images to determine document boundaries and positioning status, then translates this information into user-friendly audio cues and haptic feedback. This intermediary process maintains measurement precision while eliminating the need for direct visual confirmation by the user.
3Ease of operation
If dedicated scanning devices are used, then ease of operation is improved for visually impaired users, but device versatility and accessibility deteriorate
Solution Approach 1:
The patent enables ordinary camera devices to perform document scanning functions previously available only in dedicated scanning devices. By integrating image capture, document boundary detection, and audio-guided positioning into a universal camera device, the system eliminates the need for specialized equipment while maintaining ease of operation for visually impaired users through audio and haptic feedback.
Data Source
AI summary
Upon placement of a camera-facing surface of a camera device on a document or upon parallel positioning of the camera-facing surface close to and over the document, images are continually captured by an image capturing sensor of the camera device. While the camera device is being raised above the document, whether the document is fully included within a captured image is detected. In response to detecting that the document is fully included within the captured image, the captured image that fully includes the document is selected as a document image.