Stereoscopic Subtitle Depth Adjustment
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Solution Overview
Problem
Conventional stereoscopic subtitle reproduction methods fail to accurately maintain the intended depth positioning of subtitles relative to video content, leading to unnatural displays when the video depth is adjusted, as subtitle depth is arbitrarily defined and independent of video depth information.
Innovation Solution
A video processing apparatus that synchronizes the depth adjustment of stereoscopic video and subtitle depth, using a depth adjustment unit to modify font sizes and overlay subtitles to maintain the intended depth effect, even when the video depth is changed, ensuring subtitles are not buried or overly distant from the speaker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the depth of the stereoscopic video is adjusted according to user input, then the depth effect of the video is modified, but the subtitles are located farther than the video, causing the display image to be unnatural with subtitles buried in the video or located too far from the speaker
Solution Approach 1:
The patent applies dynamics by making the depth positioning of subtitles relative to the video content rather than fixed in absolute space. The depth adjustment unit dynamically recalculates subtitle depth positions based on the adjusted video depth, ensuring subtitles maintain appropriate spatial relationships with the video content throughout the display.
Solution Approach 2:
The patent changes the parameter of depth positioning by introducing a depth offset value that is dynamically adjusted according to the video depth adjustment. The depth offset is calculated based on the relationship between subtitle depth information and video depth, and this offset is applied to maintain proper spatial relationships between subtitles and video content when depth is modified.
2Ease of manufacture
If subtitle depth information is defined independently from video depth information, then subtitle display is simple, but changing video depth causes subtitles to be displayed at incorrect positions relative to the video content
Solution Approach 1:
The patent implements feedback by having the depth adjustment unit continuously monitor the video depth adjustment and automatically adjust subtitle depth positions accordingly. The system uses the relationship between original video depth and adjusted video depth to recalculate appropriate subtitle positions, ensuring consistent spatial relationships are maintained throughout the display.
Solution Approach 2:
The patent introduces an intermediary mechanism through the depth offset value, which serves as a mediator between the video depth adjustment and subtitle depth positioning. This offset value translates the video depth changes into corresponding subtitle position adjustments, maintaining the intended spatial relationships without requiring complex direct coordination between video and subtitle processing.
Data Source
AI summary
A video processing apparatus includes: an obtainment unit which obtains a stereoscopic video, a subtitle data item, and subtitle depth information indicating a position of the subtitle data item in a depth direction; a depth level input unit which receives an input of depth level information for adjusting a depth effect of the stereoscopic video; a depth adjustment unit which adjusts, according to the depth level information, the depth effect of the stereoscopic video and a depth effect of the subtitle depth information in association with each other; a subtitle video generation unit which generates a subtitle video from the subtitle depth information adjusted by the depth adjustment unit and the subtitle data item; a video combining unit which combines the stereoscopic video and the subtitle video to generate a combined video; and an output unit which outputs the combined video generated by the video combining unit.