Polyspectral cameras (multispectral and hyperspectral) for research (R+D+i) and industrial applications, including machine vision and in-line multispectral and hyperspectral imaging.
Traditional spectral analysis (spectroscopy; spectrometers, spectrophotometers, spectrographs,...) provides data by wavelength. The spectral imaging provides valuable additional information. This is due to its ability to image the response of products and compounds against different spectral bands (wavelength ranges). In other words, each spectral image represents the one coming back from the scene but only to certain colors or bands, in the same way that our eye would take a "green spectral image" if we put on glasses that only let green light through.
In the same way that those green glasses will not be able to discover details not seen in full light (unfiltered), the study of images at different spectral bands will be able to detect and identify details not perceptible without filtering.
The first spectral imaging systems consisted of a standard camera to which an external filter was placed allowing only a certain range of wavelengths to pass through. Changing the filter the different ones were obtained. Today there are different technologies that integrate the filtering, capturing and presentation data system: image hypercubes.
Modern cameras or spectral imaging systems provide, among other relevant variables, more or less:
- capture speed (fps, bands per second)
- number of spectral bands
- spectral range: not only visible (VIS) but also ultraviolet (UV), near infrared (NIR, mid infrared (SWIR), even mid or far infrared (MWIR, LWIR) using automated external filtering
- simultaneity and alignment in capturing images
Without forgetting a wide range of prices due to the technology used and the functionalities. Therefore, it is not trivial to carefully select the product based on the needs of the application and the first thing to think about is the number of spectral bands required and their location in the spectrum.
Within polyspectral cameras no one agrees on how far to call multispectral and from where hyperspectral, but a good approximation would be:
- multispectral camera: measures up to a few spectral bands, maximum of 10
- hyperspectral camera: measures from about 10 spectral bands
Iberoptics can offer you a wide range of multispectral and hyperspectral cameras:
- VIS-NIR (VNIR): 400 - 1000 nm
Fundamental applications of multispectral or hyperspectral imaging:
- vegetation: species classification and identification, NDVI, plant health and water stress study
- water: analysis and contaminants; wetland monitoring
- land, crops and agriculture: analysis of components, nutrients or fertilizers
- detection and study of fires
- agri-food industry: food, beverages; sorting and packaging
- materials, mining, petrochemical
- archeology and art
- biomedicine and biosciences; microscopy
- health: study of tissues, diseases, wounds
- pharmaceutical industry
- identification of surfaces and coatings
- recycling and waste management
- forensic science
- identification of counterfeits
- remote sensing
- machine vision in general
- aerial, field, laboratory, industrial or R&D applications in general
We are the distributors in Portugal and Spain of the manufacturers Haip Solutions (Germany), Nireos (Italy) and Silios Technologies (France).
Polyspectral cameras divided by spectral range