Camera Format Selection for Video Resolution and Field of View
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Solution Overview
Problem
Video conferencing systems suffer from resolution loss and reduced field of view due to mismatch between the camera format of the transmitting device and the display format of the receiving device, leading to inefficient utilization of the camera's sensor.
Innovation Solution
Selecting an alternate camera format at the transmitting device based on the requested format of the receiving device to maximize the field of view and maintain resolution, utilizing a look-up table or estimation to determine the optimal camera format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera captures video based on its own specifications, then the camera's sensor is fully utilized, but the video resolution and field of view are reduced when displayed on a receiving device with different specifications
Solution Approach 1:
The transmitting device dynamically adjusts the camera format based on the receiving device's display specifications. The system determines the requested camera format from the receiving device and selects an optimal format from supported formats to maximize field of view while maintaining compatibility, allowing the camera to adapt its capture parameters in real-time based on the remote device's capabilities
Solution Approach 2:
The system changes the camera format parameters (resolution, aspect ratio, frame size) to match the receiving device's display specifications. By selecting a camera format that aligns with the requested format, the system optimizes the utilization of the camera sensor while ensuring the video can be displayed without loss of resolution or field of view on the receiving device
2Reliability
If the camera format matches the receiving device display format, then video quality is improved, but the camera's sensor utilization may be reduced
Solution Approach 1:
The transmitting device dynamically selects the optimal camera format by comparing the receiving device's requested format with the camera's supported formats. This dynamic selection process ensures that the camera captures video at the highest possible resolution and field of view that is still compatible with the receiving device's display capabilities, thereby maintaining both video quality and sensor utilization
Solution Approach 2:
The system adjusts camera format parameters to find the optimal balance between sensor utilization and video quality. By selecting a camera format that closely matches the requested format while maximizing sensor usage, the system ensures high video quality without unnecessarily reducing sensor utilization
Data Source
AI summary
The subject technology receives, at a local device, a requested camera format based on specifications of a display associated with a remote device. The remote device and the local device are devices participating in a video conference. The requested camera format includes a first resolution. Camera formats supported by a camera associated with the local device are determined. If a second resolution of a first camera format matches among the supported camera formats matches with the first resolution, the first camera format is selected for capturing the video stream by the camera. Otherwise, a second camera format among the supported camera formats is determined for capturing the video stream so as to maximize a field of view of the video stream relative to other camera formats supported by the camera.