Differential Video Transformation for Feature Resolution
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Solution Overview
Problem
Conventional video reformatting techniques, such as equirectangular projection, disproportionately emphasize features at northern and southern latitudes of spherical video frames, leading to uneven emphasis of important features in the reformatted content.
Innovation Solution
A system and method for differentially transforming video content by identifying principle features and differentially mapping them to enhance their resolution relative to other features, using a video reformatting software that includes a video file inspection module and a differential mapping module to generate reformatted video with improved emphasis on important features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If equirectangular projection is used for spherical video reformatting, then the video can be transformed to rectangular frames, but features at northern and southern latitudes are disproportionately emphasized
Solution Approach 1:
The patent applies local quality by differentiating the treatment of different regions in the video frame. Principle features are identified and given enhanced resolution and emphasis, while non-principle features are compressed or reduced in resolution. This is achieved through selective warping operations that apply different transformation parameters to different spatial regions, allowing the system to maintain high quality for important features while reducing quality for less important areas.
Solution Approach 2:
The patent segments the video frame into principle features and non-principle features based on predetermined criteria. This segmentation allows the system to apply different processing operations to each segment - enhancing principle features while compressing non-principle features. The segmentation is performed before the warping operation, enabling region-specific transformation parameters to be applied during the projection process.
2Ease of manufacture
If linear scaling is used for latitudinal and longitudinal coordinates, then the projection is simple to implement, but features at extreme latitudes are disproportionately emphasized
Solution Approach 1:
The patent changes the transformation parameters from standard linear scaling to differential transformation parameters. Instead of applying uniform scaling factors to all coordinates, the system applies different scaling factors to different regions based on their principle feature status. This parameter modification allows the system to maintain simplicity in implementation while achieving more accurate and uniform feature representation across the entire frame.
3Productivity
If all features are treated equally in the projection, then the processing is uniform and simple, but important features may be lost in compression
Solution Approach 1:
The patent implements local quality by applying different processing parameters to different regions based on their importance. Principle features receive enhanced resolution and detailed processing, while non-principle features are subject to compression and reduced resolution. This differential processing maintains high productivity overall while ensuring that important features retain sufficient quality, resolving the contradiction between processing efficiency and feature preservation.
Data Source
AI summary
According to one implementation, a system for differentially transforming video content includes a computing platform having a hardware processor and a system memory storing a video reformatting software code. The hardware processor executes the video reformatting software code to receive an input video file including video content formatted for a first set of coordinates, and to detect one or more principle features depicted in the video content based on a predetermined principle feature identification data corresponding to the video content. The hardware processor further executes the video reformatting software code to differentially map the video content to a second set of coordinates to produce a reformatted video content. The resolution of the one or more principle features is enhanced relative to other features depicted in the reformatted video content.