Hyperspectral images acquisition was conducted by a laboratory-based line-scanning hyperspectral imaging system. The system consists of an imaging spectrograph (ImSpector V10E; Spectral Imaging Ltd., Oulu, Finland), a 672 × 512 (spatial × spectral) CCD camera (C8484-05, Hamamatsu, Hamamatsu City, Japan) with a camera lens (OLES23; Spectral Imaging Ltd., Oulu, Finland), an illumination unit of two 150 W tungsten halogen lamps (3900e Lightsource; Illumination Technologies Inc.; West Elbridge, NY, USA), a displacement platform driven by a stepper motor (Isuzu Optics Corp., Taiwan, China) and a computer equipped with a matched data acquisition software (Xenics N17E, Isuzu Optics Corp.). The data acquisition was carried out in visible and near-infrared region (Vis-NIR, 380–1030 nm) and reflectance mode was applied. Since the entire sample area was defined as the region of interest (ROI) and all the pixels in the image has their corresponding spectra, the spectra of all the pixels in the ROI were obtained at once measurement.
C8484 05
Manufactured by Hamamatsu Photonics
Sourced in Finland, Japan
The C8484-05 is a photosensor module manufactured by Hamamatsu Photonics. It is a compact, self-contained unit that includes a photosensor, signal processing circuitry, and a power supply. The core function of the C8484-05 is to convert optical signals into electrical signals for further processing or measurement.
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Lab products found in correlation
6 protocols using c8484 05
1
Hyperspectral Imaging System for Sample Analysis
2
Hyperspectral Imaging System for Reflectance Analysis
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A laboratory HSI system was established to acquire hyperspectral images of each sample in the reflectance mode, as shown in Figure 1 . This HSI system consisted of an imaging spectrograph (Spectral Imaging Ltd., Specim, Finland) covered in the range of 874–1734 nm with 256 wavelengths, a specially assembled line source with two 150 W quartz tungsten halogen lamps (Fiber-Lite DC950 Illuminator, Dolan Jenner Industries Inc., Boxborough, MA, USA), a CCD camera (C8484-05, Hamamatsu, Hamamatsu City, Japan) coupled with a lens (OLES23, Specim, Spectral Imaging Ltd., Oulu, Finland), and a computer with the Spectral-Cube data acquisition software (Isuzu Optics Corp., Taiwan, China). The software was useful for setting and adjusting the parameters of the system, such as exposure time, motor speed, imaging acquisition, wavelength range, and imaging correction. Overall, all the components (except the computer) were fixed inside a dark chamber to avoid any stray light, which might affect the veracity of the HSI equipment.
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Hyperspectral Imaging System for Material Analysis
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The hyperspectral imaging system, which covers the wavelengths of 380–1023 nm, was used to acquire hyperspectral images. It consisted of an imaging spectrograph (V10E, Specim, Oulu, Finland), a CCD camera (C8484-05, Hamamatsu Photonics, Hamamatsu, Japan), two light sources (Oriel Instruments, Irvine, CA, USA) with 150 W quartz tungsten halogen lamps, a computer, a moving conveyer and a dark box. The spectral resolution for this system is 2.8 nm, and the area CCD array detector has 672 pixels × 512 bands (spatial × spectral). ENVI 5.2 (Research System Inc., Boulder, CO, USA) and MATLAB R2014a (The Math Works Inc., Natick, MA, USA) were used to process and analyze the data.
4
Hyperspectral Imaging System for Material Analysis
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The visible/near-infrared hyperspectral imaging system, with 512 bands in the spectral ranges of 380–1030 nm, includes an imaging spectrograph (ImSpectorV10E; Spectral Imaging Ltd., Oulu, Finland); a 672 × 512 CCD camera (C8484-05, Hamamatsu Photonics, Hamamatsu, Japan); a camera lens (OLES23; Specim, Spectral Imaging Ltd., Oulu, Finland); two 150 W tungsten halogen lamps (Fiber-Lite DC950 Illuminator; Dolan Jenner Industries Inc., Boxborough, MA, USA) placed on both sides of the camera at a 45° angle; and a conveyer belt driven by a stepping motor (IRCP0076, Isuzu OpticsCrop, Zhubei, Taiwan). The system is controlled by a computer with Spectral Image-V10E software (Isuzu Optics Corp, Zhubei, Taiwan).
5
Near-Infrared Hyperspectral Imaging System
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A laboratory-built near infrared hyperspectral imaging system was used in this study. The images were obtained from a high-performance spectrograph (ImSpector N17E; Spectral Imaging Ltd., Oulu, Finland) and captured by a CCD camera (C8484-05; Hamamatsu, Hamamatsu City, Japan). The samples were transported for imaging on a conveyer belt controlled by a stepper electromotor (Isuzu Optics Corp., Taiwan, China). A detailed description of the entire system and parameters was provided by Zhang et al.25 A preliminary experiment was used to determine the optimal settings for obtaining clear and non-distorted images, the result of which the motor speed was set to 13 mm s−1, exposure time of 3 ms and the lens height at 16 cm. Hyperspectral data was collected in the range 873–1734 nm with a spectral resolution of 5 nm and the size of the hyperspectral image determined by the camera was 320 × 320 with 256 channels. The rice seeds were first placed systematically and separately on a black plate before placing them on the conveyer belt. To correct the raw near-infrared hyperspectral images, dark reference calibration was done by completely covering the lens with its opaque cap and white reference calibration using a white Teflon tile with nearly 100% reflectance.
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Hyperspectral Imaging System for Research
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A hyperspectral imaging system was used in the experiment, which consists of an imaging spectrograph (Imspector V10E, Spectral Imaging Ltd., Oulu, Finland), a CCD camera (C8484-05, Hamamatsu city, Japan), a lens (OLE-23, Specim, Spectral Imaging Ltd., Oulu, Finland), an illuminant source with two quartz tungsten halogen lamps (Fiber-Lite DC950, Dolan Jenner Industries Inc., Boxborough, USA), a conveyer belt controlled by a stepper motor (IRCP0076 Isuzu Optics Corp, Taiwan, China), and a computer. The whole system was assembled in a dark chamber except the computer, as shown in Figure 1 .
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