Multipoint Control Unit Sub-Picture Resolution Adjustment
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Solution Overview
Problem
Existing video conference technologies cannot allow users to freely control and zoom in on a region of interest within multiple pictures without affecting other sub-pictures, limiting the ability to focus on specific details without distorting the overall image.
Innovation Solution
A method and device for a multipoint control unit (MCU) that adjusts and controls sub-pictures by acquiring original video images, performing resolution adjustments, and translating them to enhance the resolution of a selected region of interest without affecting other sub-pictures, using amplification parameters and movement tracking information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera is remotely controlled to zoom in or out on the image to amplify it, then the image in the sub-picture can be magnified, but the image generated by the terminal is affected and other sub-pictures are distorted
Solution Approach 1:
The patent divides the processing of each sub-picture into independent segments. When one sub-picture is magnified, only that specific region is processed while other sub-pictures remain unchanged. This is achieved by independently adjusting the resolution and cropping each sub-picture region without affecting others, thus eliminating the distortion problem while maintaining magnification quality.
2Measurement precision
If the resolution of a sub-picture is increased to focus on details, then the clarity of the region of interest is improved, but the overall image quality and other sub-pictures are affected
Solution Approach 1:
The patent applies local quality enhancement by increasing the resolution only for the selected region of interest within a sub-picture, while maintaining the original resolution of other areas and other sub-pictures. This allows detailed viewing of specific regions without degrading the overall image quality or affecting other concurrent video feeds.
3Ease of operation
If camera remote control is used to adjust the view, then the region of interest can be positioned, but the terminal's generated image is influenced and other sub-pictures are affected
Solution Approach 1:
The patent extracts the region of interest from the original sub-picture and creates an independent magnified view. This extracted region can be freely positioned and magnified without affecting the source terminal's generated image or other sub-pictures, as the processing is performed independently on the received video stream at the MCU level.
Data Source
AI summary
A method, device and multipoint control unit device for adjusting and controlling a sub-picture in multiple pictures are provided. The method includes: acquiring the N original video images sent from a plurality of video terminals, adjusting the resolutions of the N original video images and correspondingly displaying the N resolution-adjusted video images in N regions on the display screen of the multipoint control unit, wherein N is a natural number equal to or greater than 1; performing a resolution increase adjustment processing on the video image in any one of the N regions to acquire a resolution-increased video image; and cutting, according to the information of the region where the resolution-increased video image is located, the resolution-increased video image to obtain an image which is located in the region where the resolution-increased video image is located after the cutting. According to the solutions provided herein, an image of interest can be increased in resolution and moved in the region where the image of interest is located on the premise of not affecting the video images in the other regions.