Dynamic Image Compression for Drone Video Transmission
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Solution Overview
Problem
Drone aerial photography experiences image playback freezes due to unstable WIFI network transmission rates caused by obstacles, weather, and signal interference, leading to a poor user viewing experience.
Innovation Solution
A method and device that dynamically adjust the image compression ratio based on current network transmission conditions by calculating the packet loss ratio, allowing for real-time compression and transmission of images to maintain a stable frame rate and improve playback fluency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If WIFI network is used for real-time image transmission, then user viewing capability is enabled, but image playback freezes occur due to unstable transmission rate
Solution Approach 1:
The patent implements dynamic adjustment of image compression ratio based on real-time network transmission conditions. The system continuously monitors packet loss ratio and adapts the compression ratio accordingly, transitioning from a static compression approach to a dynamic one that responds to changing network conditions, thereby resolving the contradiction between real-time viewing capability and playback stability
Solution Approach 2:
The patent changes the compression ratio parameter in response to network conditions. By adjusting this key parameter based on packet loss ratio measurements, the system optimizes the balance between image quality and transmission stability, enabling reliable real-time viewing despite WIFI network fluctuations
2Productivity
If image compression ratio is increased to reduce data volume, then transmission efficiency improves, but image quality deteriorates
Solution Approach 1:
The system dynamically adjusts compression ratio based on network conditions rather than using a fixed high compression ratio. When network conditions are good, lower compression is applied to maintain image quality; when conditions deteriorate, compression is increased to ensure transmission efficiency, thus resolving the contradiction between these two parameters
Solution Approach 2:
The compression ratio parameter is changed adaptively based on packet loss ratio. This parameter change strategy allows the system to optimize the trade-off between transmission efficiency and image quality in real-time, neither consistently sacrificing quality nor consistently prioritizing efficiency
3Reliability
If network transmission rate is low due to obstacles and interference, then transmission stability decreases, but increasing compression ratio further reduces image quality
Solution Approach 1:
The patent implements a feedback mechanism where packet loss ratio is continuously measured and used to adjust compression ratio. This closed-loop control allows the system to respond to transmission instability by adjusting compression dynamically, resolving the contradiction between maintaining transmission stability and preserving image quality
Solution Approach 2:
The system performs self-adjustment of compression ratio based on its own performance metrics (packet loss ratio). By monitoring its own transmission stability and automatically adjusting parameters, the system resolves the contradiction without external intervention, balancing reliability and quality autonomously
Data Source
AI summary
Provided are a method and device for transmitting an image. The method includes: adjusting an image compression ratio based on a current network transmission condition; performing compression processing on an image to be transmitted according to the adjusted image compression ratio to obtain a compressed image; and sending the compressed image to a viewing device side for the viewing device side to play the compressed image. The present disclosure ensures the fluency of image playback on the viewing device side, and improves the viewing experience of a user.