Blar i Institutt for marin teknikk på forfatter "Zhang, Qin"
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A system for automated vision-based sea-ice concentration detection and floe-size distribution indication from an icebreaker
Heyn, Hans-Martin; Knoche, Martin; Zhang, Qin; Skjetne, Roger (Chapter; Peer reviewed, 2017)This paper presents a ship-mounted multi-lens camera system for sea-ice monitoring and algorithms to automatically evaluate the sea-ice concentration and to indicate the floe-sizes in a radius of 100 meter around the vessel. ... -
Automatic image segmentation for boundary detection of apparently connected sea-ice floes
Zhang, Qin; Skjetne, Roger; Su, Biao (Chapter, 2013)Ice concentration, ice types, and floe size distribution are three important factors in the analysis of ice-structure interaction in a broken ice field. The use of cameras as sensors for offshore operations in ice-covered ... -
Image Processing for Ice Floe Analyses in Broken-ice Model Testing
Zhang, Qin; Skjetne, Roger; Metrikin, Ivan; Løset, Sveinung (Journal article; Peer reviewed, 2015)The ice floe shape and size distribution are important ice parameters in ice-structure analyses. Before performing an analysis at full scale, the dynamic positioning (DP) experiments in model ice at the Hamburg Ship Model ... -
Image Processing for Ice Parameter Identification in Ice Management
Zhang, Qin (Doctoral thesis at NTNU;2015:340, Doctoral thesis, 2015)Various types of remotely sensed data and imaging technology will aid the development of sea-ice observation to, for instance, support estimation of ice forces critical to Dynamic Positioning (DP) operations in Arctic ... -
Image Techniques for Identifying Sea-Ice Parameters
Zhang, Qin; Skjetne, Roger (Journal article; Peer reviewed, 2014)The estimation of ice forces are critical to Dynamic Positioning (DP) operations in Arctic waters. Ice conditions are important for the analysis of ice-structure interaction in an ice field. To monitor sea-ice conditions, ...