Image Adjustment for Centering Teleconference Users
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Solution Overview
Problem
Existing teleconference systems struggle to maintain human users within the area of interest during image capture and display, leading to potential communication issues and misunderstandings due to users being displayed outside the capture area.
Innovation Solution
Implementing image adjustment techniques using a processor to intercept and process images, applying transformations such as cropping, panning, and zooming to center the relevant portion of the user within the display panel's area of interest, utilizing driver device transforms or proxy/virtual cameras.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image capture is performed without adjustment, then the imaging device can capture the full scene, but human users may be displayed outside the area of interest on the display panel
Solution Approach 1:
The system performs preliminary detection of the human user's position in the captured image, then pre-calculates the necessary transformation parameters (crop region, pan offset, zoom level) before displaying the image. This ensures the user is centered in the area of interest without requiring real-time adjustment during display.
Solution Approach 2:
Instead of physically adjusting the camera position or display panel position, the patent uses digital image processing transformations (cropping, panning, zooming) to achieve the same effect of centering the user within the area of interest. This substitution of mechanical adjustment with computational transformation resolves the contradiction between position accuracy and device complexity.
2Reliability
If image transformations are applied to center the user, then the user is displayed within the area of interest, but processing time and computational resources increase
Solution Approach 1:
The system calculates all necessary transformation parameters (crop coordinates, pan offsets, zoom factors) in advance based on the detected user position and the desired area of interest boundaries. By preparing the transformation pipeline beforehand, the actual image transformation can be executed quickly without significant processing delays during display.
Solution Approach 2:
The image processing is segmented into distinct stages: user detection, transformation parameter calculation, and image transformation application. This segmentation allows each stage to be optimized independently and enables parallel processing where possible, reducing the overall processing time while maintaining reliable user centering.
3Loss of information
If the full image is displayed without cropping or zooming, then all scene information is preserved, but the user may not be the focus of attention
Solution Approach 1:
The patent applies different quality levels to different regions of the image: the region containing the human user is transformed and enhanced to be the focal point within the area of interest, while other regions maintain their original appearance or are adjusted less aggressively. This local differentiation ensures the user receives appropriate attention while preserving contextual scene information.
Solution Approach 2:
Instead of applying uniform cropping or zooming to the entire image, the system applies transformations selectively to focus on the user while maintaining appropriate context. The transformation parameters are calibrated to provide just enough focus on the user without excessively cutting out all surrounding scene information, achieving a balance between user prominence and scene preservation.
Data Source
AI summary
A device includes a display panel and a processor. The processor is to receive information corresponding to an image displayed on the display panel and determine whether a relevant portion of the image is centered with respect to an area of interest of the display panel. The processor is further to responsive to a determination that the relevant portion of the image is not centered with respect to the area of interest of the display panel, perform an operation to cause the relevant portion of the image to be adjusted such that the relevant portion of the image is centered with respect to the area of interest of the display panel.