Reproduction Control Unit Face Detection Scene Replay
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Solution Overview
Problem
Existing movie reproduction systems lack efficient methods for quickly locating and replaying specific scenes, particularly those featuring individuals, as they require manual navigation and do not allow for seamless skipping or rewinding to desired face appearances during playback.
Innovation Solution
A digital video camera system that detects faces in recorded movie frames and manages their appearance and disappearance points, enabling automatic rewinding to the face's appearance point during playback and allowing users to easily replay scenes with specific individuals by selecting representative images from an index screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual navigation is used to locate specific scenes during movie playback, then the user can find desired scenes, but the operation becomes complex and time-consuming
Solution Approach 1:
The system performs preliminary face detection and registers appearance/disappearance points of faces during movie playback before user request. This allows the playback control unit to immediately jump to registered face appearance points when users input face images, eliminating manual navigation and significantly reducing the time required to locate specific scenes featuring particular individuals.
Solution Approach 2:
The system introduces a face registration database as an intermediary between the user and the movie content. Users input face images which are compared against registered face data, and the playback control unit uses this intermediary database to automatically navigate to scenes containing matching faces, replacing complex manual navigation with simple face-based querying.
2Extent of automation
If the system registers appearance and disappearance points of faces during playback, then scene location becomes automatic and efficient, but the device complexity increases
Solution Approach 1:
The face detection unit and playback control unit serve multiple functions: they detect faces for registration purposes, track appearance and disappearance points, compare user-inputted faces against registered data, and control playback navigation. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while achieving high automation.
Solution Approach 2:
The system automatically performs face detection, registration, and playback navigation without requiring external intervention. The playback control unit autonomously jumps to registered face appearance points based on user face input, and the face detection unit continuously monitors and updates face information during playback, making the system self-sufficient and highly automated.
3Productivity
If face detection and registration is performed during playback, then users can quickly replay scenes with specific individuals, but the processing load and energy consumption increase
Solution Approach 1:
The system performs face detection and registration in advance during normal playback operations. By pre-registering face appearance and disappearance points before user queries, the system avoids intensive real-time processing when users seek specific scenes, thereby reducing peak energy consumption while maintaining high replay speed through immediate retrieval from registered data.
Solution Approach 2:
The system performs face detection at selective intervals rather than continuously analyzing every frame. This partial action approach maintains sufficient face detection accuracy for registration purposes while significantly reducing the processing load and energy consumption compared to full-frame continuous analysis, enabling efficient balance between productivity and energy use.
Data Source
AI summary
An apparatus which reproduces a movie from a recording medium, when receiving an instruction, reproduces the movie from a point associated with an appearance point of a feature portion.