Camera Light Avoidance via Pixel Gray Value Analysis
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Solution Overview
Problem
Camera devices' photosensitive elements are vulnerable to damage from powerful light sources, and existing protection methods are either incomplete or inefficient in preventing such damage.
Innovation Solution
A method and apparatus that determine the presence of a powerful light source by analyzing pixel gray values in captured images and send instructions to either rotate the camera device or close its shutter to avoid the light source, thereby reducing damage to the photosensitive element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera device continues to operate under powerful light, then the light source can be detected and recorded, but the photosensitive element is damaged by the powerful light
Solution Approach 1:
The patent applies preliminary action by detecting the light source through image analysis before the powerful light can damage the photosensitive element. The system calculates pixel gray values, identifies light source positions, and determines whether the light source falls within the camera's field of view. Once detected, the system proactively sends rotation instructions or shutter closure commands to prevent damage before it occurs, rather than reacting after damage has been sustained.
2Reliability
If the camera device rotates to avoid the light source, then the photosensitive element is protected from damage, but the camera cannot capture images of the light source
Solution Approach 1:
The patent implements feedback by continuously monitoring the captured images to detect light sources and their positions. The system calculates gray values of pixels, identifies regions with high brightness, and determines whether these regions represent light sources within the field of view. Based on this feedback information, the system dynamically adjusts the camera's rotation or shutter state to protect the photosensitive element while maintaining the ability to detect and track light sources through iterative image analysis.
3Reliability
If the shutter is closed to protect the photosensitive element, then damage from powerful light is prevented, but the camera cannot capture any images during protection
Solution Approach 1:
The patent applies local quality by differentiating between different regions in the captured image and assessing the threat level locally. Instead of closing the shutter universally, the system analyzes pixel gray values in specific regions, identifies light source positions, and determines whether the light source is actually within the field of view. This localized analysis allows the system to close the shutter only when necessary and only for the duration needed to protect against detected light sources, minimizing interruption to normal image capture operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively protects the photosensitive element of camera devices from powerful light by accurately detecting light sources and implementing appropriate avoidance strategies, such as rotation or shutter closure, to minimize damage.
Implementation Method 1
an imaging unit including a light receiving cell for receiving light transmitted through the objective lens, and an image data generation unit for making an output signal from the imaging unit into data
Data Source
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AI summary
A method and an apparatus for protecting a device under powerful light are disclosed. It is determined whether there is a powerful light source in an image captured by a camera device based on the number of target pixels (pixels whose gray values are larger than the first preset threshold) in the image. If so, it is indicated that the photosensitive element in the camera device is aligned with the powerful light source. In this case, the light avoidance instruction is sent, so as to cause a photosensitive element of the camera device to avoid the light source, thereby reducing the damage caused by the powerful light to the photosensitive element in the camera device.