Video Text Adjustment for Aspect Ratio Mismatch
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Solution Overview
Problem
Conventional video display systems face issues with subtitles and closed captioning obstructing the viewing area due to their fixed location, especially when there is a mismatch between the video aspect ratio and the display aspect ratio, leading to letterboxing or cropping of content.
Innovation Solution
A system comprising a ratio detector, edge locator, size assessment module, and text adjuster that automatically detects the video and display edges, determines the text size, and moves the text to unused regions above or below the video, aligning it with the video or display edges to prevent overlap, and optionally resizes the text if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If subtitles are displayed in a fixed location on the display, then the text is easily positioned and displayed, but the text obstructs a portion of the viewing area
Solution Approach 1:
The patent applies dynamics by making the text position variable rather than fixed. The text positioning system dynamically adjusts the location of subtitles based on the detected video boundaries and unused regions, allowing the text to be placed in optimal positions that do not obstruct the viewing area while maintaining ease of display.
Solution Approach 2:
The patent applies local quality by creating different display zones within the screen - the video area and the unused regions. By analyzing the local characteristics of different screen regions (identifying black bars or letterboxing areas), the system places text in appropriate local zones that do not interfere with the video content while ensuring visibility.
2Stability of the object's composition
If letterboxing is implemented to preserve the original aspect ratio, then the video can be viewed as originally intended, but unused regions are created where text might be misplaced
Solution Approach 1:
The patent applies feedback by implementing a detection mechanism that identifies the actual video boundaries and unused regions in real-time. This feedback information about the display layout is then used to automatically adjust text positioning, resolving the conflict between maintaining aspect ratio stability and achieving proper text placement in the variable unused regions.
Solution Approach 2:
The patent applies preliminary action by detecting and analyzing the display configuration (identifying letterboxing or black bars) before text is displayed. This preliminary analysis of the unused regions allows the system to pre-determine optimal text positions, ensuring that text placement is correct from the start rather than requiring adjustment during display.
3Loss of information
If text size is increased for better visibility, then readability improves, but the text is more likely to overlap with the video content
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting text parameters (position and size) based on the available unused regions. The system modifies the text display parameters to fit within the detected black bar areas, ensuring both readability and non-obstruction by optimizing the balance between text size and available space.
Data Source
AI summary
Systems and methods for automatic adjustment of text in a video are described. At least one embodiment includes a system for automatic adjustment of text in a video on a display comprising a ratio detector configured to detect an original aspect ratio of the video, an edge locator configured to identify edges of the video based on the original aspect ratio detected, wherein regions between the edges of the video and edges of the display define unused regions, a size assessment module configured to determine size of the text, wherein the size assessment module determines the size of the text by examining at least one of light portions within the text and a bounding rectangle which surrounds the text. The system further comprises a text adjuster configured to move the text to the unused region above or below the video, wherein the text adjuster further aligns the text to at least one of the edges of the video and the edges of the display device.