Video Digest Scene Extraction Using Shifted Importance Models

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Solution Overview

Problem

Existing methods for automatically extracting important scenes in video digests using machine learning struggle to include related scenes close to the important scenes, leading to incomplete or unsatisfactory video digests.

Innovation Solution

A video processing device and method that utilizes multiple models trained with shifted correct answer data to calculate and integrate importance scores, allowing for the extraction of important scenes and their related scenes by adding importance values at different time intervals, generating a more comprehensive digest video.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single machine learning model is used to extract important scenes, then the extraction process is simple and fast, but related scenes close to the important scenes are not appropriately included in the digest video

Engineering Contradiction:
Improvescene extraction efficiencyVSAvoidomission of related scenes
Core Design Contradiction:
ProductivityVSLoss of information

Solution Approach 1:

The patent divides the scene extraction task into multiple independent models, each responsible for detecting important scenes from different perspectives or temporal contexts. By segmenting the detection function across multiple models and integrating their results, the system comprehensively identifies both important scenes and related scenes without sacrificing extraction efficiency

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent combines the detection results from multiple machine learning models through integration processing. By merging the outputs of individual models that detect important scenes from different angles, the system achieves a more complete identification of related scenes while maintaining the efficiency benefits of modular model execution

Inventive Principle:
Principle #5Merging (Combining)

2Loss of information

If multiple models are used to calculate importance, then related scenes are included in the digest video, but the processing complexity and computational load increase

Engineering Contradiction:
Improvecompleteness of scene inclusionVSAvoidprocessing system complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent segments the complex detection task into multiple specialized models, each handling a specific aspect of scene importance detection. This segmentation reduces the complexity burden on individual models while collectively achieving comprehensive scene identification through their integrated results

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent designs multiple models with universal applicability to different video content types and scenarios. Each model is trained to detect important scenes through slightly different approaches, and their combined results provide a universal solution for comprehensive scene extraction across various video genres and contexts

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS12488589B2Video processing device, video processing method, training device, training method, and recording medium
Publication Date: 2025.12.02 NEC CORP
  • US12488589B2 patent drawing
  • US12488589B2 patent drawing
  • US12488589B2 patent drawing

AI summary

In a video processing device, a video acquisition means acquires a material video. An importance calculation means calculates importance in the material video using a plurality of models. An importance integration means integrates the importance calculated using the plurality of models. A generation means extracts important scenes in the material video based on the integrated importance and generates a digest video including the extracted important scenes.