Camera Light Parameter Measurement via Diffused Mode
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Solution Overview
Problem
Existing methods for measuring ambient light parameters are costly and require specialized equipment, making them unfavorable for widespread application and precise adjustment of display screen brightness and color temperature.
Innovation Solution
A method and device using a camera with a diffused light operation mode to measure light parameters such as color temperature and intensity by acquiring image parameters and determining corresponding light parameters through preset correspondences, allowing for high-precision measurements at a lower cost without the need for special sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If special equipment such as a sensor is used to measure ambient light parameters, then measurement precision is improved, but device cost increases
Solution Approach 1:
The patent uses the camera's image capture function to copy the light measurement function. By processing the RGB values from the camera image, the system derives ambient light parameters without requiring dedicated light sensors. This copying approach allows existing camera hardware to perform dual functions, reducing overall device cost while maintaining measurement capability
Solution Approach 2:
The camera module is made multi-functional by enabling it to perform both image capture and ambient light parameter measurement. The same camera hardware that captures images is also used to measure color temperature and brightness by analyzing the RGB values of captured images, eliminating the need for separate dedicated sensors and reducing device complexity
2Device complexity
If a camera with diffused light operation mode is used, then device cost is reduced, but measurement precision may be affected
Solution Approach 1:
The patent changes the operational parameters of the camera by introducing a diffused light mode. In this mode, the camera processes light differently to capture ambient illumination characteristics. By adjusting the camera's operational state and using specific image processing algorithms on the captured data, the system achieves accurate light parameter measurement using standard camera hardware rather than specialized sensors
Solution Approach 2:
The patent replaces the mechanical/optical sensor system with an electronic/image processing system. Instead of using dedicated light sensors that require specific optical paths and mechanical components, the system uses the camera's electronic image capture and processing capabilities to measure light parameters, substituting a more versatile electronic system for specialized mechanical hardware
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
Enables high-precision light parameter measurement and screen adjustment at a lower cost, reducing the influence of varying light sources and eliminating the need for expensive equipment, thus improving display settings and user eye safety.
Implementation Method 1
the camera has at least a first operation mode, and in the first operation mode, light emitted into the camera is diffused
Data Source
AI summary
A method and device for light parameter measurement, a method for screen adjustment and an electronic device are provided. A current image parameter corresponding to a type of a parameter to be measured obtained by a camera under a first operation mode is acquired, a light parameter value corresponding to the current image parameter is determined based on a preset correspondence between an image parameter and a light parameter, and the light parameter value corresponding to the current image parameter is taken as a current light parameter.