Browsing by Author "Selj, Gorm Krogh"
Now showing items 1-14 of 14
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Camouflage performance of winter uniforms: photosimulations in the visual spectrum
Mikkelsen, Alexander; Selj, Gorm Krogh; Nielsen, Niels Hygum (2023-10-23)Minimizing electro-optical signatures of soldiers against modern sensors is a challenging task, but a task with high importance and benefits for operative soldiers that need to stay undetected. Optimizing camouflage uniforms ... -
Discriminating between camouflaged targets by their time of detection by ahuman based observer assessment method
Selj, Gorm Krogh; Søderblom, Morten (2015)Detection of a camouflaged object in natural sceneries requires the target to be distinguishable from its local background. The development of any new camouflage pattern therefore has to rely on a well-founded test methodology ... -
Disruptive camouflage tricks the human eye - a study of detection times of two near-similar targets in natural backgrounds
Selj, Gorm Krogh (2015)Our understanding of camouflage, in military as well as in evolutionary perspectives, has been developing over the last 100 years. In that period of time several underlying principles have emerged. It has turned out in the ... -
Disruptive coloration in woodland camouflage: evaluation of camouflage effectiveness due to minor disruptive patches
Selj, Gorm Krogh; Heinrich, Daniela (2016)We present results from an observer based photosimulation study of generic camouflage patterns, intended for military uniforms, where three near-identical patterns have been compared. All the patterns were prepared with ... -
The effect of contrast in camouflage patterns on detectability by human observers and CAMAELEON
Heinrich, Daniela; Selj, Gorm Krogh (2015)Evaluation of signature properties of military equipment is very important. It is crucial to apply the proper method out of many possible approaches, based on amongst others ranking by probability of detection, detection ... -
Evaluation methods of signature effectiveness - a first evaluation of camouflage assessments by CAMAELEON compared to human observers
Heinrich, Daniela; Selj, Gorm Krogh (2016-07-04)Signature control and a good understanding of the performance of signature control measures is a very important topic for the Norwegian Armed Forces. In order to achieve this we need methods for test and evaluation of ... -
Evaluation of camouflage pattern performance of textiles by human observers and CAMAELEON
Heinrich, Daniela; Selj, Gorm Krogh (2017)Military textiles with camouflage pattern are an important part of the protection measures for soldiers. Military operational environments differ a lot depending on climate and vegetation. This requires very different ... -
A field-based method for evaluating thermal properties of static and mobile camouflage
Selj, Gorm Krogh; Heinrich, Daniela (2018)Reliable and realistic methods for assessment of thermal infrared signature properties for military purposes are important. With a basis in ongoing developments of imaging technologies, especially towards mass markets, ... -
Search by photo methodology for signature properties assessment by human observers
Selj, Gorm Krogh; Heinrich, Daniela (2015)Reliable, low-cost and simple methods for assessment of signature properties for military purposes are very important. In this paper we present such an approach that uses human observers in a search by photo assessment of ... -
Spectral characteristics of moist birch leaves and synthetic materials: experimental studies and evaluation of models
Mikkelsen, Alexander; Selj, Gorm Krogh (2021-11-09)The optical depth of biomaterials and natural backgrounds varies with their environment and incoming light properties. Deciduous trees, for instance, have canopy thicknesses that vary significantly from one place to another. ... -
Spectral properties of multilayered oak leaves and a camouflage net: experimental measurements and mathematical modelling
Mikkelsen, Alexander; Selj, Gorm Krogh (2021-09-21)The development of state-of-the-art surveillance technology forces nations to develop camouflage with advanced capabilities. Owing to the abundance and wide distribution of leaves, their spectral properties are often ... -
Spectral reflectance and transmission properties of a multi-layered camouflage net: Comparison with natural birch leaves and mathematical models
Mikkelsen, Alexander; Selj, Gorm Krogh (2020-09-20)With improved specifications and capabilities of modern sensors and detectors, concealment is an increasingly challenging endeavor. Concealment from modern sensors requires advanced camouflage material that can provide low ... -
Spectral reflectance measurements of snow and snow covered objects: experimental studies compared with mathematical models
Selj, Gorm Krogh; Mikkelsen, Alexander (2021-09-12)In this study, we have investigated reflectance spectra of different snow types under various conditions. Snow reflectance is interesting from a camouflage point of view as snow covers large land areas in many parts of the ... -
Spectral reflectance properties of sand layers covering an underlying target: experimental measurements and mathematical modelling
Selj, Gorm Krogh; Mikkelsen, Alexander (2023-10-23)Adapting to natural backgrounds is important, yet very difficult, to achieve effective camouflage. One interesting aspect is the optical depth of biomaterials as a function of both geographical region, in which the ...