Pixel-Region Shutter Control for Moving Object Blur Consistency
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Solution Overview
Problem
Existing image capturing techniques struggle to handle scenes with a wide dynamic range, often resulting in overexposure at bright regions and underexposure at dark regions, and can cause inconsistencies in image blur across moving objects due to varying shutter speeds across pixel positions.
Innovation Solution
An image capturing apparatus that identifies moving object regions and sets image capturing conditions on a pixel-by-pixel or region-by-region basis, ensuring an identical shutter speed for pixels corresponding to moving object regions, while adjusting ISO sensitivity and shutter speed to maintain consistent exposure and reduce blur inconsistencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shutter speed is adjusted according to the moving speed of a moving object, then the image capturing condition is optimized for the moving object, but overexposure occurs at bright regions and underexposure occurs at dark regions in scenes with wide dynamic range
Solution Approach 1:
The patent segments the image into multiple regions (moving object region and non-moving object region) and applies different shutter speeds to each region. The identification unit identifies the moving object region, and the setting unit sets a first shutter speed for the moving object region and a second shutter speed for the non-moving object region, allowing independent exposure control for each segment to resolve the contradiction between motion optimization and exposure accuracy.
2Manufacturing precision
If different shutter speeds are set for pixels in different brightness regions of a moving object, then the exposure is adjusted for each region, but the amount of blur in the same moving object differs depending on pixel position creating a sense of incongruity
Solution Approach 1:
The patent applies segmentation by dividing the image into moving object region and non-moving object region, then applies different shutter speeds to each segment. This ensures that all pixels within the moving object region use the same shutter speed, maintaining consistent blur appearance across the moving object while still allowing different exposure control between moving and non-moving regions.
3Device complexity
If the aperture is fixed during moving image capturing, then the image capturing system is simplified, but the ability to adjust exposure for different brightness regions is limited
Solution Approach 1:
The patent introduces dynamic control of shutter speed on a region-by-region basis while keeping the aperture fixed. The setting unit dynamically adjusts the shutter speed for different regions based on motion detection, providing adaptable exposure control without increasing the complexity of the physical aperture mechanism. This dynamic parameter adjustment maintains system simplicity while enhancing exposure versatility.
Data Source
AI summary
In an embodiment of the present disclosure, an image capturing apparatus capable of capturing an image while controlling an image capturing condition on a pixel-by-pixel basis or on a region-by-region basis comprises: an identification unit configured to identify a moving object region in the image on the basis of motion information on an object; and a setting unit configured to set the image capturing condition for each pixel or each region such that an identical shutter speed is applied to pixels corresponding to the moving object region.