Video Processing Device Local Frame Capture for Storage Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Event data recorders face a challenge in balancing image quality and storage space, as high resolution increases file size and recording time, while low resolution results in poor image quality, and high compression ratios degrade image quality.
Innovation Solution
A video processing method that captures and combines global frames with local frames at different frame rates to generate synthesized frames, allowing for adjustable image quality and storage efficiency by determining when to capture local frames based on specific regions and rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high resolution is used to record video data, then image quality is improved, but storage space requirement increases and available recording time decreases
Solution Approach 1:
The patent divides the video frame into multiple regions of interest (ROIs) with different resolution requirements. Critical areas such as license plates, pedestrians, and vehicles are captured at high resolution, while non-critical areas are captured at lower resolution. This segmentation approach maintains image quality where needed while reducing overall storage space requirements and extending recording time.
Solution Approach 2:
The patent applies different quality levels to different regions of the video frame. High resolution is applied locally to regions containing important information (such as facial features, license plates, or vehicle details), while lower resolution is applied to background areas. This local quality adjustment resolves the contradiction by optimizing image quality where it matters most while reducing overall data volume.
2Quantity of substance
If high compression ratio is used to store video files, then storage space is reduced, but image quality decreases
Solution Approach 1:
The patent segments the video data into different quality levels based on region importance. Critical regions are encoded with higher quality (lower compression) while non-critical regions use higher compression. This segmented compression approach reduces overall storage space while preserving image quality in important areas.
Solution Approach 2:
The patent applies differential compression ratios to different regions of the video frame. High compression is applied to background areas where detail is less important, while low compression is applied to foreground objects and critical details. This local quality adjustment maintains image quality where needed while achieving space efficiency overall.
3Quantity of substance
If low resolution is used to record video data, then storage space is reduced and recording time is extended, but image quality becomes blurred and users cannot clearly observe content
Solution Approach 1:
The patent divides the video frame into multiple regions, capturing critical areas at high resolution and non-critical areas at lower resolution. This segmentation ensures that important information remains clear and observable while reducing overall data volume to extend recording time.
Solution Approach 2:
The patent applies high resolution locally to regions containing important information such as faces, license plates, and vehicles, while using lower resolution for background areas. This local quality approach ensures clear observation of critical content while reducing overall storage requirements to extend recording time.
Data Source
AI summary
A video processing method, a video displaying method, and a video processing device are provided. The video processing device performs the video processing method and the video displaying method. The video processing method includes the following steps. First, receive a full frame according to a global frame rate. Then, according to a first local frame rate different from the global frame rate, determine whether to capture a first local frame from the global frame. Finally, combine the first local frame and the global frame to generate a synthesized frame. The video processing method, the video displaying method and the video processing device produce better quality and smaller file size of image data.