Camera Control Parameter Optimization for Clipped Image Regions
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Solution Overview
Problem
Existing image processing technologies fail to improve the image quality of clipped images, which are often dark and unsuitable for distribution, display, or recording, due to suboptimal camera control parameters set for the entire captured image rather than the clipped image.
Innovation Solution
An image processing device and method that determine and apply camera control parameters optimized for the clipped image in real-time during image capturing, including focus, exposure, white balance, shutter speed, and aperture, to ensure the clipped image is captured with optimal settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If camera control parameters are optimized for the entire captured image, then the overall image quality is improved, but the clipped image quality deteriorates due to suboptimal parameters for the specific region
Solution Approach 1:
The patent applies local quality by determining camera control parameters specifically for the clipped image region rather than for the entire captured image. The system calculates parameters (exposure, focus, white balance) based on the brightness and characteristics of the specific clipped region, ensuring optimal image quality for that local area while maintaining overall system functionality.
2Illumination intensity
If exposure is suppressed to prevent overexposure in bright regions, then brightness control is improved, but the luminance of shaded portions decreases excessively
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting camera control parameters based on the detected brightness characteristics of the clipped image region. When the region is identified as shaded or dark, the system increases exposure parameters specifically for that region, transforming the capture parameters to optimize luminance quality while preventing overexposure in other areas.
3Manufacturing precision
If image processing is performed after clipping to adjust image quality, then correction capability is improved, but information loss occurs due to limited correction range
Solution Approach 1:
The patent applies preliminary action by determining and setting camera control parameters before the actual image capture, rather than performing corrections after clipping. This allows the camera to capture the clipped image region with already-optimized parameters (exposure, focus, white balance), preventing information loss that would occur if corrections were applied after capture when pixel data is already fixed.
4Manufacturing precision
If camera control parameters are adjusted in real-time for clipped images, then image quality is improved, but processing time and complexity increase
Solution Approach 1:
The patent applies self-service by implementing automatic detection and determination of camera control parameters based on the clipped image region's brightness characteristics. The system autonomously analyzes the captured image, identifies the clipped region, calculates appropriate parameters (exposure, focus, white balance), and applies them without manual intervention, reducing operational complexity while maintaining high image quality.
Data Source
AI summary
It is possible to generate an image captured with a camera control parameter optimum for a clipped image of a partial region of a captured image by a camera, and to distribute, display, or record the image. The image processing device includes: a clipping execution unit that generates a clipped image obtained by clipping a partial region from a captured image by a camera; a camera control parameter determination unit that determines a camera control parameter optimum for the cut-out image; and a camera control unit that causes the camera to execute image capturing to which the camera control parameter determined by the camera control parameter determination unit is applied. The camera control parameter determination unit determines a camera control parameter of at least one of focus, exposure, white balance (WB), shutter speed, or aperture optimum for the clipped image.