Visual Indexing for Recorded Presentation Retrieval
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Solution Overview
Problem
Conventional methods for accessing recorded information, such as presentations, are inefficient and require sequential viewing, lacking effective indexing or retrieval techniques.
Innovation Solution
A method that uses an input image to determine and retrieve specific portions of recorded presentation information documents by comparing the image with stored image files and associating them with corresponding recorded presentation information documents, utilizing content matching and temporal information to identify matching content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sequential viewing method is used to access recorded information, then the system is simple, but the access efficiency is low and time-consuming
Solution Approach 1:
The system performs preliminary actions by capturing images at specific time points during the presentation and creating an index structure in advance. This index maps images to their corresponding time points and content, enabling rapid retrieval without sequential viewing. The pre-processing of creating this visual index resolves the contradiction by preparing the data structure beforehand, allowing efficient access later without increasing operational complexity.
Solution Approach 2:
The patent introduces an intermediary index structure that mediates between the recorded presentation data and the user's retrieval needs. This index acts as a bridge, containing captured images and their associated metadata (time points, content descriptions) that enable direct jumping to relevant portions. The intermediary index resolves the contradiction by providing a lookup mechanism that avoids sequential scanning while maintaining system simplicity through structured data organization.
2Loss of time
If no indexing technique is used, then the storage system is simple, but the retrieval of specific information is inefficient
Solution Approach 1:
The system creates copies of key visual frames (captured images) from the presentation and stores them in an index structure. These image copies serve as visual anchors that represent specific content portions and time points. By copying and indexing these representative images rather than processing the entire continuous presentation data, the system achieves fast retrieval without proportionally increasing storage complexity. The copied images act as searchable proxies for the full presentation content.
3Ease of operation
If conventional sequential access method is used, then the implementation is simple, but the user experience is poor due to inability to quickly locate specific content
Solution Approach 1:
The system extracts key visual elements (captured images) from the continuous presentation stream and separates them into an independent index structure. This extraction allows users to interact with discrete image thumbnails representing different content portions, making it easy to visually scan and locate specific information. The extracted images are taken out from the temporal sequence and organized in a spatially accessible index, improving ease of operation without requiring complex full-text indexing of the entire presentation.
Data Source
AI summary
A method for determining a recorded presentation information document is provided. The method comprises: receiving information identifying an input image; comparing the input image with a plurality of image file documents to determine an image file document in the plurality of image file documents that includes information that is considered to match the input image; and determining a recorded presentation information document that is associated with the image file document that was determined.