What is hyerspectral imaging? Hyperspectral imaging reveals the invisible and generates an in-depth understanding of phenomena and objects studied.
The human eye, like a normal colour camera, acquires light in three bands, red, green and blue. Spectral imaging divides the spectrum into many more bands where hyperspectral sensors look at objects using a vast portion of the electromagnetic specrtum. The term "hyper" in a hyperspectral camera means "over" as in very many and this type of camera provides ample spectral information to identify and distinguigh spectrally-unique materials.
A hyperspectral camera captures the object or scene line-by-line and this line is split into its spectral components before reaching the sensor. In general, hyperspectral sensors measure bands at 10 ot 20 nm intervals. The resultant image consists of dozens to hundreds of narrow, adjacent and data-rich spectral bands, every pixel of which can then be used to characterise the objects under review with great precision and detail. Consequently, hyperspectral imaging leads to a greatly improved ability to classify the objects based on their spectral signatures as well as enabling proccess control capabilities beyond what has been traditionally possible.
Applications for hyperspectral imaging Hyperspectral cameras are designed for applications that require a high resolution and distortion-free image on the detector and this type of capture is valuable in applications where there is a need to distinguish between spectrally similar materials. Uses for hyperspectral cameras include:
• Monitoring crop vigor and disease treatment
• Land cover classification and fire management
• Environmental impact of disasters
• High speed drill core analysis
• Colour-quality control in textile manufacturing
• Separating crime scene details
• Mineral mapping
• Species detection
• National intelligence
• Chemical imaging
• Scientific research
• Material classification
Hyperspectral systems
Model
Spectral Range
Spectral resolution
Spatial pixels/line
Pixel size on sample
Maximum sample size
SisuCHEMA - chemical imaging
Chemical imaging is one of the most powerful non-destructive technologies, enabling advanced machine vision solutions for production, recycling, and quality control. Hyperspectral imaging provides consistent and reliable methods for all colour management applications with absolute precision.
SisuCHEMA VNIR
400 - 1 000 nm
2.8 nm
1312
38 - 152 µm
200 x 300 x 45 mm (WxLxT)
SisuCHEMA NIR
900 - 1 700 nm
6 nm
320
Scalable from 30 to 600 microns
SisuCHEMA SWIR
1 000 - 2 500 nm
10 nm
320
Scalable from 30 to 600 microns
Model
Spectral Range
Spectral resolution
Pixel sizensample
Maximum sample size
SisuRock - core imaging
Geological samples, such as drill cores, can rapidly be mapped for nearly all minerals of commercial interest with hyperspectral imaging. sisuROCK generates an image where each pixel contains a full spectrum, unique to each mineral of interest. High speed, automated computer algorithms identify the minerals and convert the data into mineral maps of the samples depictured.
SisuRock - SWIR
970 – 2 500 nm
10 nm
320
HR*: 0.2 mm; HS: 2.0 mm
1 500 x 640 x 200 mm (L x W x H), 50 kg
SisuRock - VNIR
400 - 1 000 nm
2.8 nm
1 000
HR*: 0.09 mm; HS: 0.64 mm
SisuRock - RGB
N/A
N/A
4 000
HR*: 0.016 mm; HS: 0.16 mm
* HR - High Resolution mode for single core measurement. HS - High Speed mode for single core box measurement.
Model
Spectral Range
Spectral sampling
Spectral bands
Pixel size on target
Maximum sample size
SisuSCS - Single core scanner
SCS is developed for high resolution measurements of drill core type samples like lake sediment cores or oil sands. This unit is ideal when annual core production is lower than in traditional mining and exploration.
SisuSCS- SWIR
1000 - 2500 nm
6.3 nm / pixel
256
0.16 - 0.38 mm (320 pixels)
130 x 1 500 x 75 mm (L x W x H)
SisuSCS- VNIR
400 - 1000 nm
0.78 - 6.27 nm / pixel
96 - 768 (adjustable by binning)
0.04 - 0.09 mm (1 312 pixels)
130 x 1 500 x 75 mm (L x W x H)
Model
Spectral Range
Spectral resolution
Sensor
Frame rate per second
Number of spectral bands
Aisa Series - Airborne
AISA systems are ruggedised spectral imaging solutions dedicated to airborne and defence usage, covering VNIR (380-1 000 nm,), SWIR (1 000-2 500 nm) and thermal LWIR (7.6 – 12.4 um) spectral ranges. The combination of the reliability and performance with least size and weight have made AISA sensors the tools of choice for demanding remote sensing applications. SPECIM provides complete systems ready to be installed and operated onboard all types of fixed- or rotary wing as well as manned or unmanned airborne platforms.
