Display Apparatus Face Tag Transmission for Bandwidth Reduction
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Solution Overview
Problem
Existing visual communication systems require high network bandwidth and system resources to transmit and process video data, leading to potential quality deterioration due to insufficient resource support in various usage environments.
Innovation Solution
The system reduces transmission bandwidth by transmitting only the changed tag information of a user's face, allowing the receiving apparatus to adjust and render the image in real-time, while also providing privacy by excluding the background and focusing on facial features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If video data is transmitted in real-time for visual communication, then communication quality is improved, but network bandwidth consumption increases
Solution Approach 1:
The patent segments the video data transmission by dividing the face into multiple regions (eye region, nose region, mouth region, etc.) and selectively transmitting only the changed regions rather than the entire face image. This segmentation approach maintains communication quality by transmitting relevant facial expression changes while significantly reducing network bandwidth consumption.
Solution Approach 2:
The patent extracts and transmits only the essential information needed for visual communication - specifically the changed tag information representing facial expression changes - while excluding unnecessary data such as background information and unchanged facial regions. This extraction principle reduces bandwidth usage while preserving communication quality.
2Reliability
If full video data is transmitted to maintain image quality, then visual communication effectiveness is improved, but system resource consumption increases
Solution Approach 1:
The patent extracts only the necessary visual information - tag data representing facial feature positions and expressions - from the complete video data. By transmitting only these extracted essential elements rather than full video frames, the system maintains visual communication effectiveness while reducing processing and memory resources consumption.
Solution Approach 2:
The patent changes the data representation parameters by converting continuous video pixel data into discrete tag information representing key facial feature positions. This parameter transformation reduces data complexity and system resource requirements while preserving the essential visual communication content.
3Loss of information
If background information is included in video transmission, then complete visual information is provided, but privacy protection is reduced
Solution Approach 1:
The patent extracts and transmits only the essential facial feature information needed for visual communication while deliberately excluding background information. This extraction approach maintains sufficient visual information completeness for communication purposes while eliminating privacy risks associated with transmitting background data that may contain sensitive personal information.
Data Source
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AI summary
A display apparatus including: a camera configured to photograph a first user of the display apparatus; a communication interface configured to communicate with an external apparatus of a second user; a display configured to display an image of a visual communication between the first user and the second user; and a controller configured to generate information regarding a change in a position of a face of the first user from an image of the first user photographed by the camera during the visual communication, and configured to transmit the information regarding the change in the position of the face of the first user to the external device so that the face of the first user having the changed position is displayed on the external apparatus.