Multispectral Imaging Exposure Control for Plant Sensing
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Solution Overview
Problem
In plant sensing, inappropriate imaging settings, such as overexposure and use of unsuitable wavelengths, lead to ineffective sensing, as the imaging conditions and target-specific wavelengths are not adequately accounted for in existing technologies.
Innovation Solution
An imaging apparatus and method featuring a multispectral imaging unit with pixels of different spectral characteristics, coupled with an exposure control unit that sets optimal exposure settings based on specification information for the measurement target, including predicted output values from spectral characteristics, to prevent overexposure and ensure accurate imaging across multiple wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If imaging is performed with fixed exposure settings, then the imaging process is simple, but overexposure occurs and sensing accuracy deteriorates
Solution Approach 1:
The exposure control unit pre-calculates appropriate exposure settings for each pixel based on its spectral characteristics and the measurement target's spectral properties before imaging occurs. This preliminary calculation of exposure parameters prevents overexposure and ensures accurate sensing without requiring complex real-time adjustments during imaging
Solution Approach 2:
The system dynamically adjusts exposure parameters (such as exposure time or gain) for each pixel based on its specific spectral characteristics and the predicted output values. By changing these parameters adaptively rather than using fixed settings, the system achieves high sensing accuracy across multiple pixels with different spectral responses
2Measurement precision
If a single wavelength is used for imaging, then the imaging system is simple, but the plant cannot be appropriately sensed
Solution Approach 1:
The imaging unit incorporates multiple pixels with different spectral characteristics within a single device, enabling it to capture information across multiple wavelengths simultaneously. This multi-functional approach allows the system to sense plant properties that require specific wavelength responses without needing separate imaging devices for each wavelength
Solution Approach 2:
Each pixel in the imaging unit is designed with specific spectral characteristics tailored to detect particular wavelengths relevant to plant sensing. By assigning different spectral properties to different pixels, the system achieves high measurement precision for plant parameters while maintaining a unified imaging device structure
3Measurement precision
If exposure settings are not optimized for the measurement target, then the imaging process is simple, but overexposure occurs and sensing becomes ineffective
Solution Approach 1:
The exposure control unit automatically determines appropriate exposure settings by analyzing the spectral characteristics of the measurement target and calculating predicted output values for each pixel. The system performs self-adjustment of exposure parameters without requiring manual intervention, ensuring effective sensing while simplifying operation
Solution Approach 2:
The system uses the spectral characteristics of the measurement target and predicted output values from each pixel to feedback-adjust exposure settings. This closed-loop approach ensures that exposure parameters are continuously optimized for the current imaging conditions, preventing overexposure and maintaining high sensing effectiveness
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 appropriate imaging settings and effective sensing by preventing overexposure and optimizing exposure based on the measurement target's spectral characteristics, allowing for accurate imaging across various wavelengths, thereby improving the sensing of plants and other objects.
Implementation Method 1
an imaging unit including a plurality of pixels having different spectral characteristics
Data Source
AI summary
The present technology relates to an imaging apparatus, an imaging method, and a program that perform appropriate exposure control, to thereby enable a desired object to be appropriately imaged.The present technology includes: an imaging unit including a plurality of pixels having different spectral characteristics; and an exposure control unit setting information associated with exposure control on the plurality of pixels depending on specification information for specifying a kind of a measurement target. Alternatively, the present technology includes: an imaging unit including a plurality of pixels having different spectral characteristics; and an exposure control unit setting information associated with exposure control on the plurality of pixels on the basis of a predicted output value of each of the plurality of pixels based on a spectral characteristic related to a measurement target. The present technology is applicable to an imaging apparatus which senses vegetation, for example.