Browsing by Author "Hovland, Harald"
Now showing items 1-8 of 8
-
Characterization of a compact 6-band multifunctional camera based on patterned spectral filters in the focal plane
Torkildsen, Hans Erling; Hovland, Harald; Opsahl, Thomas Olsvik; Haavardsholm, Trym Vegard; Nicolas, Stephane; Skauli, Torbjørn (2014)In some applications of multi- or hyperspectral imaging, it is important to have a compact sensor. The most compact spectral imaging sensors are based on spectral filtering in the focal plane. For hyperspectral imaging, ... -
Construction and demonstration of a multispectral tomographic scanning imager (TOSCA)
Hovland, Harald (2013)This work presents the first experimental demonstrator of an imager based on a tomographic scanning (TOSCA) principle. The device described generates a stream of multispectral images of a scene or target using simple conical ... -
Experimental tomographic scanning (TOSCA) imagers
Hovland, Harald (2014)The tomographic scanner (TOSCA) detects signals using line detectors scanning a scene at regularly distributed angles. These line scan signals are then processed to reconstruct 2-dimensional images. In the simplest form, ... -
Optimisation of flare and chaff programs - an analytical approach
Hovland, Harald (2006)A statistical model is presented that expresses the mission survival probability of an aircraft as a function of various input parameters such as missile attack rate, false alarm rate, missile detection probability and ... -
Spin scan tomographic array-based imager
Hovland, Harald (2014)This work presents a novel imaging device based on tomographic reconstruction. Similar in certain aspects to the earlier presented tomographic scanning (TOSCA) principle, it provides several important enhancements. The ... -
Spin scan tomographic imager
Hovland, Harald (2015)A novel imaging device based on tomographic reconstruction is presented. The imager is based on rotating an image of the scene onto a linear detector array, and then reconstructing a 2-dimensional image from the detector ... -
Statistics-based filtering for low signal-to-noise ratios, applied to rocket plume imaging
Hovland, Harald (2017)Extracting information from low signal to noise ratio images poses significant challenges. Noise makes extracting spatial features difficult, in particular if extraction of both large, smooth features at the same time as ... -
Thermal infrared reference sources fabricated from low-cost components and materials
Hovland, Harald; Skauli, Torbjørn (2018)Mass markets, including mobile phones and automotive sensors, drive rapid developments of imaging technologies toward high performance, low cost sensors, even for the thermal infrared. Good infrared calibration blackbody ...