Camera-Based Document Interaction Detection
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Solution Overview
Problem
Electronic devices face difficulties in performing functions based on user interactions with real books, such as detecting touches or changes in printed areas, due to limitations in sensing and interpreting physical inputs from real-world documents.
Innovation Solution
An electronic device method involving image acquisition through a camera to detect changes in printed areas, determining user interactions by analyzing changes in the images, and performing corresponding functions based on these determinations, using a processor to execute program code that handles user interactions with real documents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an electronic device uses a camera to capture images of a real document, then it can detect user interactions with the document, but it cannot directly sense physical touches or changes in printed areas without additional sensing mechanisms
Solution Approach 1:
The patent uses a camera to capture an optical copy (image) of the real document instead of requiring direct physical sensing. By comparing sequential images, the system detects changes in the document state (such as finger touches obscuring printed areas) to infer user interactions. This copying approach enables interaction detection without complex physical sensing mechanisms.
2Measurement precision
If the electronic device analyzes image changes to detect user interactions, then it can interpret physical inputs from real documents, but it requires processing and comparing multiple images to determine interactions
Solution Approach 1:
The system captures a first image of the document before the user interaction occurs, establishing a baseline state. When a user interaction happens, the system captures a second image and compares it with the pre-captured first image to detect changes. This preliminary action of capturing the initial state enables efficient and accurate detection of interactions without requiring continuous complex processing.
Data Source
AI summary
A method of detecting a user interaction by an electronic device according to various embodiments may include acquiring, through a camera, a first image of a real document in which at least one first area is printed, determining whether at least one first part corresponding to the at least one first area and included in the first image is changed, and performing a function of the electronic device corresponding to the at least one first part, based on determining that the at least one first part is changed.