A next generation VNIR-SWIR hyperspectral camera system: HySpex ODIN-1024

Abstract

The HySpex ODIN-1024 is an airborne VNIR-SWIR hyperspectral imaging system which advances the state of the art with respect to both performance and system functionality. HySpex ODIN-1024 is designed as a single instrument for both VNIR (0.4 to 1 µm wavelength) and SWIR (1 to 2.5 µm) rather than being a combination of two separate instruments. With the common fore-optics of the single instrument, a more accurate and stable co-registration is achieved across the full spectral range compared to having two individual instruments. For SWIR the across-the-track resolution is 1024 pixels, while for VNIR the user of the instrument can choose a resolution of either 1024 or 2048 pixels. In addition to high spatial resolution, the optical design enables low smile-and keystone distortion and high sensitivity obtained through low F-numbers of F1.64 for VNIR and F2.0 for SWIR. The camera utilizes state of the art scientific CMOS (VNIR) and MCT (SWIR) sensors with low readout noise, high speed and spatial resolution. The system has an onboardcalibration subsystem to monitor the stability of the instrument during variations in environmental conditions. It features an integrated real-time processing functionality, enabling real-time detection, classification, and georeferencing. We present an overview of the performance of the instrument and results from airborne data acquisitions.

Hyperspectral and Multispectral Image Fusion with Automated Extraction of Image-Based Endmember Bundles and Sparsity-Based Unmixing to Deal with Spectral Variability

“…In particular, the remote sensing hyperspectral images acquired by high-spectral-resolution sensors consist of hundreds of contiguous spectral bands ranging from the visible to infrared wavelength domains. The hyperspectral sensors can be either onboard spaceborne platforms including EO-1/Hyperion [ 2 ], AVIRIS [ 3 ], PRISMA [ 4 ], HISUI [ 5 ], EnMAP [ 6 ] or onboard aircrafts equipped with such sensors as Hyspex [ 7 ], AVIRIS-NG [ 8 ], and APEX [ 9 ]. The data provided by these sensors having a high spectral resolution deliver useful information that enable an accurate classification and precise detection of pure materials (also called endmembers) in the observed scene.…”

Imagerie Hyperspectrale Dans l’Infrarouge Thermique Avec Le Système Aéroporté Sieleters

“…Nous comparerons ces résultats à des mesures de vérité terrain. HySpex ODIN-1024 (Blaaberg et al, 2014a) est la composante visible, proche infrarouge et SWIR du système SYSIPHE. Le système est constitué de deux spectro-imageurs de type « pushbroom » basés sur des systèmes dispersifs (Figure 1(a)).…”

Using a Panchromatic Image to Improve Hyperspectral Unmixing

“…The spectral behavior is thus analyzed to determine the status or the chemical composition of each element of the scene. For most of remote sensing hyperspectral cameras onboard a space platform, like the future HYPXIM/HYPEX-2 [1,2] with an 8 m Ground Sampling Distance (GSD) or PRISMA [3], HYPERION [4], or EnMAP [5] with a 30 m GSD, or onboard an aircraft, like Apex [6] or Hyspex [7], or AVIRIS-NG [8] with a GSD of a few meters depending on the acquisition altitude, the spatial resolution is not sufficient to ensure the presence of a single material in each pixel. Thus, the area covered by a pixel is most of the time composed of several materials, making the correct material identification difficult, as shown in Figure 1.…”