ROI Video Reconstruction in a Single Stream at Low Bitrate
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Solution Overview
Problem
Existing video transmission technologies struggle to provide high-definition video services efficiently in a single transmission environment, particularly when focusing on a region of interest (ROI), often compromising quality of service (QoS) and quality of experience (QoE).
Innovation Solution
A method and system that generate high-definition and low-definition videos from an original video, reconstructing the ROI and remaining regions using a single stream, allowing for high-definition video transmission at a relatively low bitrate by setting an ROI and generating videos of different resolutions based on maximum resolution, and transmitting these videos using a single stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-definition video is transmitted for the entire video frame, then video quality is improved, but bandwidth consumption increases
Solution Approach 1:
The patent applies local quality by transmitting high-definition video data only for the region of interest (ROI) while transmitting low-definition or compressed data for the remaining regions. This allows the system to focus bandwidth resources on the most important areas of the video frame, improving perceived video quality without proportionally increasing overall bandwidth consumption.
Solution Approach 2:
The video frame is segmented into multiple regions including the region of interest (ROI) and other regions. Different transmission qualities are applied to different segments, with the ROI receiving high-definition transmission and other regions receiving lower-quality transmission. This segmentation enables differentiated resource allocation based on regional importance.
2Measurement precision
If multiple streams are used to provide high-definition and low-definition video separately, then video quality for different regions is improved, but system complexity increases
Solution Approach 1:
The patent merges multiple video streams (high-definition ROI stream and low-definition other regions stream) into a single composite video stream for transmission. This combining approach maintains the quality benefits of differentiated transmission while reducing system complexity by using a single transmission channel instead of multiple separate streams.
Solution Approach 2:
The single video stream serves multiple functions by containing both high-definition ROI data and low-definition other regions data within the same transmission channel. This multi-functional stream can be processed and displayed to provide different quality experiences for different regions without requiring separate transmission infrastructure.
3Measurement precision
If video resolution is increased, then image quality is improved, but data transmission volume increases
Solution Approach 1:
High image quality is provided locally only in the region of interest (ROI) rather than uniformly across the entire video frame. The ROI is transmitted at high resolution while other regions are transmitted at lower resolution, thereby improving image quality where it matters most without proportionally increasing the total data transmission volume.
Solution Approach 2:
Instead of applying full high-definition quality to the entire video frame (excessive action), the patent applies high-definition quality only partially to the ROI regions. This partial action approach achieves sufficient image quality for the most important areas while significantly reducing the overall data transmission volume compared to full HD transmission.
Data Source
AI summary
An image providing method includes configuring a region of interest in an original image; generating a high-quality image and a low-quality image by using the original image; reconstructing the region of interest and a remaining region other than the region of interest by using the high-quality image and the low-quality image; and transmitting the reconstructed region of interest and the reconstructed remaining region via a single stream.