Video Stream Generation via Segmented Image Correction
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Solution Overview
Problem
Existing video camera systems face challenges in displaying high-resolution video streams on less powerful devices, particularly when monitoring large areas or multiple regions, due to high network load and computational requirements, which is inadequate for real-time surveillance needs.
Innovation Solution
A method for generating a total video stream from a high-resolution camera with image correction for separate fields of view, allowing adaptation to simple display devices without high computational load, using image rectification algorithms and storage of original images at the camera, enabling efficient compression and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution video streams are transmitted to display devices, then image quality is improved, but network load and computational requirements increase
Solution Approach 1:
The patent divides the high-resolution image into multiple lower-resolution sub-images corresponding to different fields of view. Each sub-image is processed and transmitted separately, reducing the overall data transmission requirement while maintaining the ability to display multiple views simultaneously on the device
Solution Approach 2:
The patent transforms the problem from transmitting one high-resolution image in spatial detail to transmitting multiple lower-resolution images that cover different angular fields of view. This dimensional shift from resolution to field-of-view coverage allows efficient use of limited bandwidth while providing comprehensive surveillance coverage
2Area of stationary object
If multiple cameras are used to monitor large areas, then surveillance coverage is improved, but device complexity and installation costs increase
Solution Approach 1:
The patent uses a single camera to capture a wide-field distorted image, then segments this image into multiple sub-images corresponding to different fields of view. This segmentation approach replaces the need for multiple physical cameras with a single camera performing virtual segmentation through image processing
Solution Approach 2:
The patent creates virtual camera views by processing and transforming the single captured image. These virtual copies of different fields of view are generated through image correction and sub-image extraction, providing multiple surveillance perspectives without requiring multiple physical camera installations
3Measurement precision
If image correction is performed for the entire high-resolution image, then image quality is improved, but computational load increases
Solution Approach 1:
The patent performs image correction separately on each lower-resolution sub-image rather than on the entire high-resolution image. This segmentation of the correction process significantly reduces the computational load while maintaining adequate correction quality for each field of view
Solution Approach 2:
The patent applies image correction selectively to only the necessary portions of the image data - specifically to the extracted sub-images rather than to the complete high-resolution image. This partial correction approach suffices for the application requirements and avoids unnecessary computational expenditure
Data Source
AI summary
The invention relates to a method for generating video stream data relating to different fields of vision from a camera having a sensor which records high resolution images in a distorted manner. According to the invention, image corrections are performed for separate fields of vision, and a total video stream is output from the differently corrected image data.