Dynamic Aspect Ratio Adjustment for Video Call Image Compatibility

Solution Overview

Problem

Current video conferencing systems face issues with aspect ratio and resolution mismatches between display devices and cameras, leading to distorted video images and inefficient bandwidth usage due to unnecessary data transmission.

Innovation Solution

A method and apparatus that dynamically adjust the aspect ratio of images during a video call by obtaining display parameters, comparing them to image capture parameters, and modifying the images before transmission to ensure compatibility with the receiving device's aspect ratio, thereby reducing distortion and bandwidth waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If video images are transmitted without aspect ratio adjustment, then bandwidth usage is reduced, but image distortion occurs on display devices with mismatched aspect ratios

Engineering Contradiction:

Improvebandwidth usageVSAvoidimage quality

Core Design Contradiction:

Loss of energyVSManufacturing precision

Solution Approach 1:

The system performs aspect ratio adjustment and image modification on the sending device before transmission. By pre-processing the video images to match the receiving device's aspect ratio, the system eliminates the need for distortion correction at the receiving end, thereby reducing bandwidth usage while maintaining image quality.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically changes image parameters (aspect ratio, resolution) based on the receiving device's display characteristics. By comparing display parameters with capture parameters and adjusting the image parameters accordingly before transmission, the system optimizes both bandwidth efficiency and image quality for the specific receiving device.

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If video images are modified before transmission to match display parameters, then image quality is improved, but processing complexity increases

Engineering Contradiction:

Improveimage qualityVSAvoidprocessing complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The sending device automatically obtains display parameters from the receiving device, compares them with capture parameters, and performs the necessary image modifications autonomously. This self-service approach eliminates the need for manual configuration or complex centralized processing, reducing overall system complexity while maintaining high image quality.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system uses feedback from the receiving device's display parameters to dynamically adjust the image processing on the sending device. By continuously comparing capture parameters with display parameters and adjusting accordingly, the system achieves high image quality without requiring overly complex processing algorithms.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If aspect ratio adjustment is performed dynamically during video calls, then adaptability to different devices is improved, but computational requirements increase

Engineering Contradiction:

Improvedevice compatibilityVSAvoidcomputational requirements

Core Design Contradiction:

Adaptability or versatilityVSPower

Solution Approach 1:

The system performs aspect ratio adjustment and image modification on the sending device before transmission. By pre-processing the video images to match the receiving device's aspect ratio, the system eliminates the need for distortion correction at the receiving end, thereby reducing bandwidth usage while maintaining image quality.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically changes image parameters (aspect ratio, resolution) based on the receiving device's display characteristics. By comparing display parameters with capture parameters and adjusting the image parameters accordingly before transmission, the system optimizes both bandwidth efficiency and image quality for the specific receiving device.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9172907B2Method and apparatus for dynamically adjusting aspect ratio of images during a video call

Publication Date: 2015.10.27 VONAGE AMERICA LLC

AI summary

A method and apparatus for dynamically adjusting an aspect ratio of an image during a video call is described herein. Specifically, a method for dynamically adjusting the aspect ratio of an image during a video call may include obtaining at least one display parameter of a display device, performing a comparison of the at least one display parameter to at least one image capture parameter of a capture device, capturing an original image, modifying the original image based on the comparison performed, wherein the modified image has an adjusted aspect ratio different from an aspect ratio of the original image, and sending the modified image to the display device.