Video Information Superimposition Avoiding Object Occlusion
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Solution Overview
Problem
Conventional techniques for superimposing related information over objects in videos often obscure the objects themselves or nearby objects, hindering the viewer's understanding of the content.
Innovation Solution
An information superimposition device that extracts candidate positions for superimposing information without overlapping recognized objects and determines a consistent position for the information near the objects, ensuring it does not occlude them and maintains proximity over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If related information is displayed at a position in contact with the region of an object, then the viewer can easily understand the content of the related information, but the related information often hides the object itself or nearby objects
Solution Approach 1:
The patent extends the positioning from 2D screen coordinates to 3D spatial coordinates by introducing depth information. The superimposition position is determined not only by horizontal and vertical positions but also by depth distance from the camera, allowing information to be placed in the spatial vicinity of objects without overlapping them on the 2D display plane.
Solution Approach 2:
The superimposition position is made dynamic rather than static. The position is recalculated for each frame based on the current object position and depth information, allowing the information to maintain its spatial relationship with the object while avoiding occlusion as the object moves or the camera angle changes.
2Loss of information
If related information is displayed close to the object, then the association between information and object is clear, but the information may overlap and obscure the object
Solution Approach 1:
By incorporating depth information into the positioning calculation, the system can place information close to objects in 3D space while ensuring it does not overlap on the 2D display. The depth coordinate allows the information to be positioned in front of or behind the object spatially, maintaining association without occlusion.
Solution Approach 2:
The patent applies different positioning strategies to different regions of the screen based on local characteristics. The superimposition position is determined by considering the specific spatial relationship between the information and the object, as well as the surrounding context, rather than using a uniform positioning rule.
3Device complexity
If superimposition position is determined solely based on object position, then the positioning is simple, but the information may still overlap with objects or important video content
Solution Approach 1:
The system performs preliminary analysis of the video content and object positions before determining the final superimposition position. By pre-calculating candidate positions and evaluating them against occlusion criteria, the system avoids the need for complex real-time optimization while still achieving optimal positioning that prevents occlusion.
Solution Approach 2:
The patent introduces depth information as an intermediary factor in the positioning process. This additional dimension acts as a mediator that helps resolve conflicts between maintaining proximity to objects and avoiding occlusion, simplifying the overall positioning decision-making process.
Data Source
AI summary
In accordance with present invention, an information superimposition device for superimposing, in a video, superimposition information that is associated with an object in the video, includes: a memory; and a processor coupled to the memory and configured to: extract candidate superimposition positions from the video, based on positions of one or more objects recognized in the video, the candidate superimposition positions being positions where the superimposition information can be superimposed without overlapping the one or more objects recognized in the video; and determine a position of the superimposition information, based on a set of the candidate superimposition positions and the positions of the one or more objects recognized in the video, such that a distance between the object and the superimposition information that is associated with the object is made small.