Hyperspectral Imaging

One of the outstanding research areas in Computer Vision is Hyperspectral Imaging. For years, Tecnalia has participated together with SPECIM in different projects to develop new solutions for hyperspectal analysis establishing efficient cooperation in this area. In this post, SPECIM provides some highlight on some hyperspectral applications:

SPECIM Spectral Imaging is a Finnish company created in 1995 dedicated to manufacturing hyperspectral imaging devices. To this day, in order to reach the high-ends of precision, durability and functionality, SPECIM has been in the forefront with new technological solutions applied to hyperspectral imaging. World class research, business, and defence organizations are relying on SPECIM quality when performance and reliability matters. SPECIM instruments are used in a wide range of applications:

Colour

Colour is a key quality parameter in numerous products, from printed publications and interior materials, like floor tiles, to car parts as well as displays and various light sources, like LEDs. Spectral colour measurement provides significantly better precision than traditional RGB colour measurement. Push-broom hyperspectral imaging makes it possible to quickly scan total samples for precise colour mapping, and apply spectral colour inspection and sorting simultaneously in multiple points as well as across a full process line.

SPECIM’s imaging spectrographs and spectral cameras in VIS and VNIR range are being used by world leading companies, like Canon and Seico, and research institutes and other organizations, like University of Joensuu (Finland) for applications requiring precise colour measurement, inspection and sorting.

Using VIS/NIR and IR spectral cameras for detecting and separating crime scene details

Detecting invisible details and separating mixed evidence is critical for forensic inspection. If this can be done reliably and fast at the crime scene, irrelevant objects do not require further examination at the laboratory. This will speed up the inspection process and release resources for other critical tasks.

Investigation of works of art

Instituto di Fisica Applicata in Florence, Italy uses SPECIM’s imaging spectrograph in a hyperspectral scanner to investigate and archive spectral maps of old work of art. The research is part of projects for preserving and maintaining the invaluable Italian cultural heritage.

High-Speed drill core analysis

Hyperspectral imaging permits high-speed and accurate measurement of drill cores and other geological samples. In the present application example a renowned mining-specilized organization analyzes drill cores with SPECIM VNIR and SWIR Spectral Cameras (imaging spectrometers).

By using hyperspectral, high-resolution drillcore scan data, the exploration geologist will be able to use accurate mineralogical and structural information for his work, not visible in normal viewing.

The whole process of scanning and analysing the image takes only a fraction of time compared to e.g. thin section preparation and analysis at a low cost and produces quantitative data to base operational decisions on

Biomass mapping

AISA hyperspectral data gives farmers a real-time solution for monitoring crop vigor and disease treatment results in high-value crops. Green areas indicated in the figure above show the improved biomass of crops after applying fungicide toxicant.

Hyperspectral imaging for small-scale analysis of symptoms caused by different sugar beet diseases

Hyperspectral imaging (HSI) offers high potential as a non-invasive diagnostic tool for disease detection. In this paper leaf characteristics and spectral reflectance of sugar beet leaves diseased with Cercospora leaf spot, powdery mildew and leaf rust at different development stages were connected.

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