Multi-Camera Image Brightness Superposition for Dark Light
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Solution Overview
Problem
In dark light environments, existing image acquisition technologies struggle to maintain image brightness without causing blurring due to increased exposure time, which is exacerbated by hand movement during long exposures.
Innovation Solution
An image acquisition device and method utilizing two cameras to simultaneously capture images, with a processing module that corrects and superposes brightness to enhance image quality, including a denoising unit to remove noise and a control module to manage continuous shooting based on environmental illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If exposure time is increased to improve image brightness in dark light conditions, then image brightness is improved, but image registration is not executed causing images to blur
Solution Approach 1:
The patent divides the single long exposure task into multiple short exposure shots taken simultaneously by multiple cameras. Each camera captures a sharp image with short exposure time, avoiding the blurring problem of long exposure while still achieving sufficient brightness through subsequent superposition of multiple images.
Solution Approach 2:
The patent combines images from multiple cameras through brightness superposition to achieve the brightness effect of long exposure without the blurring issue. By merging multiple short exposure images, the system attains both sharpness and brightness simultaneously.
2Illumination intensity
If multiple cameras are used to capture images simultaneously, then image brightness can be enhanced through superposition, but device complexity increases
Solution Approach 1:
The patent makes each camera in the multi-camera system perform the same function of capturing the scene, but combines their outputs to achieve enhanced brightness. This universal approach simplifies the system design compared to using a single camera with complex long exposure mechanisms, as each camera can be a standard short exposure unit.
Data Source
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AI summary
Provided is an image acquisition device, comprising a camera shooting module, wherein the camera shooting module comprises at least two cameras; a control module for controlling the at least two cameras of the camera shooting module to shoot the same scenario; and a processing module for processing images shot by the camera shooting module for the same scenario, so as to obtain images with enhanced brightness. Also correspondingly provided are an image acquisition method and a terminal. The present invention can realize the acquisition of clear images with relatively high brightness in a dark light environment.