Viewpoint-Aware Playback Control for Viewing-Direction-Changeable Video
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Solution Overview
Problem
In viewing-direction-changeable videos, users face difficulties in finding specific scenes again due to differences in displayed images when changing the viewing direction, making it hard to locate previously viewed content using seek bars or search mode playback.
Innovation Solution
An electronic device with a playback unit, management unit, and control unit that stores viewpoint information and extracts and displays a range of the moving image corresponding to a previous viewing direction, facilitating scene search by superposing images from past and current viewing directions during search mode playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If viewing direction is changed in a video playback system, then the user can view content from multiple angles, but it becomes difficult to locate previously viewed scenes when using seek bars or search mode playback
Solution Approach 1:
The system stores viewpoint information (viewing direction and playback position) in advance during normal video playback. When search mode is activated, this pre-stored information is immediately retrieved and used to display the previously viewed scene, eliminating the need for manual searching and enabling quick scene location.
2Ease of operation
If the display extracts and shows a specific range based on stored viewpoint information during search mode, then scene search is facilitated, but the normal playback functionality is interrupted
Solution Approach 1:
The display behavior dynamically changes based on playback mode. During normal playback, the system displays video content in the usual manner. When search mode is detected, the system automatically switches to extracting and displaying a specific range based on stored viewpoint information. This dynamic adaptation allows the same system to serve multiple functions without requiring separate dedicated displays.
Data Source
AI summary
An electronic device includes: a playback unit which plays back a viewing-direction-changeable moving image; a management unit which stores viewpoint information as a record of a viewing direction in playing back the moving image; and a control unit which carries out control so that a range of the moving image including a viewing direction identical to a viewing direction on a previous playback occasion is extracted and displayed based on the viewpoint information stored in the management unit, in response to predetermined user operation different from an instruction for normal-speed playback and related to playback of the moving image or specification of a playback position in the moving image, and carries out control so that the displaying the range based on the viewpoint information is not performed in response to an instruction for normal-speed playback.