Video Reproduction Apparatus Using Shot Segmentation for Scene Navigation
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Solution Overview
Problem
Existing video content reproduction systems, such as PVRs, face challenges in accurately and efficiently searching for desired scenes due to user dizziness from high-speed fast forward and limited navigation options, requiring complex user interfaces and multiple inputs.
Innovation Solution
An apparatus and method that automatically searches for desired scenes by selecting and reproducing specific sections of video content based on shot index information, allowing continuous reproduction without high-speed sections and using one-time key inputs for navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high speed fast forward function is used to search for desired scenes, then the searching speed is improved, but the user feels dizzy and may miss desired scenes
Solution Approach 1:
The video content is divided into multiple shots with different reproduction speeds. The system segments the video into short shots (reproduced at fast speed) and long shots (reproduced at normal speed), allowing efficient searching while maintaining accuracy for important scenes.
Solution Approach 2:
The reproduction speed is dynamically adjusted based on the shot type. The system automatically switches between fast reproduction for short shots and normal reproduction for long shots, optimizing both searching speed and location accuracy adaptively.
2Adaptability or versatility
If a large number of keyframes are provided for navigation, then the user can select from more scenes, but it takes a long time to select the desired keyframe
Solution Approach 1:
The system performs preliminary classification of shots into short and long categories before user selection. This pre-processing organizes the video content structure, enabling efficient navigation without requiring users to browse through all keyframes manually.
Solution Approach 2:
The video is segmented into shots with different reproduction characteristics. This segmentation allows the system to present navigation options more efficiently by grouping scenes according to their reproduction type, reducing the time needed to locate desired content.
3Adaptability or versatility
If the intelligent skip function is used to widen the search range, then more scenes become accessible, but many inputs are required to shift to the desired location
Solution Approach 1:
The system automatically determines which shots to reproduce and at what speed based on pre-established shot index information. This self-service mechanism eliminates the need for multiple user inputs, as the system autonomously navigates through the video content according to the shot classification.
Solution Approach 2:
Shot index information is prepared in advance, containing classification data that enables the system to automatically plan the reproduction sequence. This preliminary preparation allows wide search range coverage without requiring continuous user intervention.
4Ease of operation
If a simple user interface is provided, then ease of operation is improved, but navigation functionality is limited
Solution Approach 1:
The system autonomously performs navigation tasks using pre-stored shot index information, eliminating the need for complex user interfaces. The simple interface requires minimal user input while the system handles the complex navigation logic automatically, maintaining both simplicity and versatility.
Solution Approach 2:
Navigation data is prepared in advance through shot classification and indexing. This preliminary action enables the system to provide comprehensive navigation capabilities through a simple interface, as the complex processing has already been completed during the indexing phase.
Data Source
AI summary
A method for reproducing video contents includes the steps of: selecting a reproduction shot from video contents, based on a current location information and a shot index information; determining a reproduction section from the selected reproduction shot; and reproducing the determined reproduction section. After the determined reproduction section is reproduced, the above processes are repeated to next reproduction shots. The repetitive processes are performed all over the video contents until the user requests a reproduction change.