Video Sampling Resolution Matching for Distortion-Free Communication
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Solution Overview
Problem
During video communication, mobile terminals with different screen resolutions and aspect ratios cause distortion due to the need for stretching, compressing, or cropping of video content to fit the receiving terminal's display, leading to a suboptimal user experience.
Innovation Solution
A method and device for video communication that involves obtaining configuration information of the receiving terminal, selecting a corresponding camera resolution based on this information, and sampling and sending video content to match the receiving terminal's display settings, thereby preventing the need for out-of-ratio adjustments and maintaining the original aspect ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If video content is stretched, compressed or cropped to fit different screen resolutions and aspect ratios, then the video can be displayed on any terminal, but the image quality deteriorates due to distortion
Solution Approach 1:
The patent applies preliminary action by obtaining the receiving terminal's configuration information (screen resolution and aspect ratio) before video sampling, and pre-calculating the appropriate camera resolution and sampling parameters. This allows the transmitting terminal to capture video at the correct resolution from the start, eliminating the need for post-capture stretching, compressing or cropping operations that would distort the image.
Solution Approach 2:
The patent changes the sampling parameters (camera resolution, frame rate, codec) based on the receiving terminal's configuration information. By dynamically adjusting these parameters to match the terminal's capabilities, the system achieves both adaptability across different terminals and maintains image quality, as the video is captured at the optimal resolution rather than being transformed after capture.
2Manufacturing precision
If video is captured at high resolution to maintain quality, then image quality improves, but data traffic and power consumption increase
Solution Approach 1:
The patent dynamically changes the sampling resolution parameter based on the receiving terminal's screen resolution and aspect ratio. Instead of always capturing at the maximum camera resolution, the system selects the appropriate resolution that matches the terminal's display capabilities, thereby maintaining video quality while reducing data traffic and power consumption associated with high-resolution capture and transmission.
Solution Approach 2:
The system uses feedback from the receiving terminal's configuration information to adjust the sampling resolution. The transmitting terminal receives information about the terminal's screen capabilities and uses this feedback to optimize the video capture parameters, ensuring that video quality is sufficient for the terminal while avoiding unnecessary high-resolution capture that would waste energy and bandwidth.
3Loss of energy
If video sampling resolution is reduced to lower data traffic, then power consumption decreases, but the video quality deteriorates
Solution Approach 1:
The patent optimizes the sampling resolution parameter by matching it to the receiving terminal's screen resolution and aspect ratio. This ensures that video is captured at the precise resolution needed for quality display without excessive resolution that would waste power. The parameter is carefully selected to achieve the minimum necessary quality for the terminal, balancing power consumption and video quality.
Solution Approach 2:
By obtaining terminal configuration information before video sampling and pre-determining the optimal resolution, the system avoids both high-resolution capture that wastes power and low-resolution capture that degrades quality. The preliminary setup ensures the exact right resolution is used from the start, achieving quality efficiency.
Data Source
AI summary
The present disclosure relates to methods and devices for video communication. The methods include: configuration information of an objective terminal in video communication is obtained; a corresponding camera resolution is selected as a resolution for sampling video according to the configuration information; a video is sampled according to the resolution for sampling video; and the sampled video is sent to the objective terminal.