What do you mean by multiband images?
1.2. Multiband or multispectral images are those that capture individual images at specific wave numbers or wavelengths, frequently taken by specific filters or LEDs, across the electromagnetic spectrum (normally the visible (VIS) and near-infrared (NIR) regions [7].
What is multispectral imaging used for?
Multispectral imaging measures light emission and is often used in detecting or tracking military targets.
What is spectral image technique?
Spectral imaging refers to a group of analytical techniques that collect spectroscopic information and imaging information at the same time. The spectroscopic information tells us about the chemical makeup at the individual points of the image (pixels) allowing a chemical map of the imaged area to be produced.
What are multispectral sensors?
About Multispectral Data A standard visual sensor collects red, green and blue wavelengths of light. Multispectral sensors collect these visible wavelengths as well as wavelengths that fall outside the visible spectrum, including near-infrared radiation (NIR), short-wave infrared radiation (SWIR) and others.
What is MSS in remote sensing?
A scanning system used to collect data over a variety of different wavelength ranges is called a multispectral scanner (MSS), and is the most commonly used scanning system. Each line is scanned from one side of the sensor to the other, using a rotating mirror (A).
What is multispectral satellite image?
A multispectral image is therefore composed of several channels or bands, each one containing, the amount of radiation measured in very specific wavelength ranges for each pixel (for example, green, red or near infra-red).
How does a spectral camera work?
With a hyperspectral camera, the light is captured through a lens and split into different spectral lengths by a dispersive element such as a prism or a diffraction grating [123]. Also possible is a recording of different wavelengths at different positions in the FOV.
What spectral means?
Definition of spectral 1 : of, relating to, or suggesting a specter : ghostly We felt a spectral presence in the old ballroom.