Single-Shot High Dynamic Range Image Generation via Pixel Segmentation
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Solution Overview
Problem
Conventional image generation systems require multiple exposures and prolonged posture maintenance, leading to inconvenience and image blurring due to user tremors, while existing methods fail to effectively generate high dynamic range images without additional processing.
Innovation Solution
An image generation system that acquires multiple images with different resolutions and brightness in a single short exposure, using a digital camera with a calculation unit to adjust exposure times and an image synthesis unit to combine these images, thereby generating a high dynamic range image without the need for prolonged exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple exposures with different exposure times are used to generate high dynamic range images, then image quality and dynamic range are improved, but user convenience deteriorates due to the need to maintain the same posture for a prolonged period
Solution Approach 1:
The patent applies preliminary action by pre-dividing the pixel array into multiple regions (e.g., first region for short exposure, second region for long exposure) before the actual photographing operation. This allows the camera to capture multiple exposure images simultaneously in a single shot, eliminating the need for the user to maintain posture during multiple sequential exposures, thus resolving the contradiction between image quality and user convenience.
2Manufacturing precision
If multiple exposures are performed to acquire images with different luminance, then high dynamic range image generation is enabled, but image stability deteriorates due to hand tremors during prolonged exposure
Solution Approach 1:
The patent pre-configures different exposure times for different pixel regions before capturing the image. By simultaneously exposing all regions in a single shot, the method eliminates the time factor that causes hand tremors, ensuring image stability while still capturing both short-exposure (edge detail) and long-exposure (color information) data needed for high dynamic range image generation.
Solution Approach 2:
The patent segments the pixel array into multiple regions with different exposure characteristics. This segmentation allows simultaneous capture of multiple exposure images in a single shot, preventing image blurring from hand tremors while maintaining the ability to generate high dynamic range images through subsequent synthesis of the segmented regions.
3Adaptability or versatility
If the subject position changes during multiple photographing operations, then flexibility in capturing different scenes is improved, but image synthesis quality deteriorates due to misalignment
Solution Approach 1:
The patent pre-divides the pixel array into multiple fixed regions before photographing. Since all regions capture images simultaneously in a single shot, any movement of the subject or camera during the exposure does not cause misalignment between different exposure images. This resolves the contradiction by allowing flexibility in capturing different scenes while maintaining synthesis quality through simultaneous capture.
Data Source
AI summary
Provided is an image generation system and method, more particularly, an image generation system and method which can generate a high dynamic range image from a plurality of images acquired in a single short exposure. The image generation system To includes an image generation system having an image acquisition unit to acquire an image, an image generation unit to generate, from the acquired image, a plurality of images with different resolution and brightness, and an image synthesis unit to synthesize the generated images.