Color Scheme Extraction from Video Using Semi-Master Shot Segmentation
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Solution Overview
Problem
Current movie recommendation systems rely heavily on manual metadata tagging, which is labor-intensive and inefficient, and lack a unique descriptor to differentiate movies effectively, especially since color schemes play a significant role in film perception and emotion but have not been adequately addressed in existing video descriptor extraction methods.
Innovation Solution
A two-stage color scheme extraction technique that segments videos into semi-master shots, extracts base palettes using keyframe selection and color clustering, and merges these palettes into a single color scheme using convex hull enclosing methods, leveraging RGB color space and saliency maps to capture the dominant color scheme of a movie.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual metadata tagging is used to describe movies, then movie recommendations can be provided based on user preference, but considerable labor and time are required
Solution Approach 1:
The system automatically extracts color schemes from movie videos without human intervention. The video processing system performs self-service by autonomously analyzing visual content, extracting dominant colors, and generating color scheme descriptors, eliminating the need for manual tagging while maintaining accurate movie descriptions
Solution Approach 2:
The patent replaces the mechanical manual tagging process with an automated computer vision system. Instead of human operators manually analyzing and tagging movies, the system uses algorithms to automatically process video frames, extract color information, and generate descriptors, substituting human labor with computational processes
2Ease of manufacture
If existing video descriptor extraction methods are used, then processing can be simplified, but color scheme extraction is not adequately addressed
Solution Approach 1:
The patent segments the video into multiple frames and further divides each frame into superpixels or regions. This segmentation allows the system to process complex video content in manageable units, maintaining simplicity while accurately capturing color schemes by analyzing color distribution across segmented regions and aggregating results
Solution Approach 2:
The system performs preliminary color analysis by extracting colors from key frames or representative samples before generating the final color scheme. This preliminary action simplifies the overall process by pre-identifying dominant colors, which are then refined into the final color scheme descriptor, ensuring both simplicity and accuracy
3Measurement precision
If all 200,000-250,000 images in a movie are processed, then complete color scheme extraction is achieved, but computational complexity increases significantly
Solution Approach 1:
The patent extracts only the essential color information from video frames by identifying and isolating dominant colors. Instead of processing all visual data, the system extracts key color descriptors that represent the overall color scheme, reducing computational complexity while maintaining extraction completeness by focusing on the most significant color characteristics
Solution Approach 2:
The system processes a representative subset of frames or uses sampling strategies rather than analyzing every single frame. By performing partial action on selected key frames or using downsampling techniques, the system achieves sufficient color scheme extraction completeness without the excessive computational complexity of processing all 200,000-250,000 images
Data Source
AI summary
An apparatus for extracting a color scheme from a video is provided. The apparatus comprises: a semi-master shot segmentation part for segmenting an input video into a plurality of semi-master shots through semi-master-shot boundary detection (SBD); a base palette extraction part for extracting base palettes from the segmented semi-master shots; and a color scheme merging part for merging the base palettes extracted from the semi-master shots to extract a color scheme.