Camera Day Night Mode Switching Accuracy
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Solution Overview
Problem
Existing camera systems face issues with inaccurate switching between day and night modes due to poor accuracy in determining visible light illuminance, leading to repeated mode switching and a compromised user experience.
Innovation Solution
The method involves determining visible light illuminance in the night mode by considering both the infrared light contribution ratio and color temperature value, rather than just white balance statistical information, to improve accuracy and reduce repeated switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visible light illuminance is determined using only white balance statistical information, then the calculation process is simple, but the accuracy of visible light illuminance determination is poor
Solution Approach 1:
The patent changes the parameters used for calculation by introducing color temperature value as a new parameter alongside the existing white balance statistical information. This parameter change enables more accurate visible light illuminance determination while maintaining computational feasibility through a structured calculation framework that combines multiple parameters systematically.
2Reliability
If switching decision is based on inaccurate visible light illuminance, then the switching process is fast, but repeated switching between day and night modes occurs
Solution Approach 1:
The patent implements a feedback mechanism by using the accurately determined visible light illuminance and color temperature value to make informed switching decisions. The system continuously monitors these parameters and adjusts the switching logic accordingly, preventing repeated mode changes by basing decisions on reliable real-time measurements rather than inaccurate data.
3Measurement precision
If infrared light contribution ratio is considered alone, then the calculation is straightforward, but the deviation from actual visible light illuminance is large
Solution Approach 1:
The patent merges multiple parameters including white balance statistical information, color temperature value, and infrared light contribution ratio into a unified calculation framework. This combination allows the system to leverage the strengths of each parameter while compensating for their individual limitations, achieving higher measurement precision through synergistic integration.
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
This approach enhances the accuracy of visible light illuminance determination in night mode, leading to more precise switching decisions and improved camera performance by minimizing repeated mode changes.
Implementation Method 1
allow the infrared light to enter the image sensor through the lens, so that the intensity of light entering the image sensor at night is increased
Implementation Method 2
due to the strong ability of infrared light to resist light pollution, the quality of imaging pictures at night is greatly improved
Data Source
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AI summary
Provided are a camera, a method, apparatus and device for switching between a day mode and a night mode, and a medium. The method includes steps described below. In response to a current camera mode being the night mode, a color temperature value of a current imaging picture is determined. Visible light illuminance of the current imaging picture is determined by utilizing the color temperature value and an infrared light contribution ratio of picture brightness obtained based on white balance statistical information of the current imaging picture and used as first visible light illuminance. It is determined whether to switch from the current night mode to the day mode by utilizing a magnitude relationship between the first visible light illuminance and a first preset illuminance threshold. According to the present application, the accuracy of determining the visible light illuminance in the night mode is improved, and thus the problem of repeated switching between the day mode and the night mode is effectively improved.