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Launched in October 2009, WorldView-2 is the first Very High Resolution 8-band multispectural commercial satellite. Operating at an altitude of 770 km, WorldView-2 incorporates industry-leading geolocation accuracy and is able to geolocate to less than 5 m to create maps in remote areas, thereby maximizing the utility of available resources. Multispectral resolution imagery is acquired by use of bi-directional scanning and rapid retargeting using Control Moment Gyros – more than two times faster than any competitor. COLLECTION CAPACITY Ability to image 1,000,000 km² daily with a 1.1 day revisit rate at 1 m GSD or less. ACCURACY Predicted <3.5 m CE90 without ground control CONTIGUOUS AREA COLLECTED Mono: 138 km x 112 km (8 strips) Stereo: 63 km x 112km (4 pairs) www.euspaceimaging.com | Arnulfstrasse 199, 80634 Munich, Germany | T: +49 89 130 1420 DATA SHEET WorldView-2 Specifications y Altitude: 770 km Orbit y Type: SunSync, 10:30 am descending node y Period: 100 minutes Dynamic Range 11-bits per pixel Swath Width At Nadir: 16.4 km Panochromatic 450 - 800 nm Sensor Bands Resolution Features 8 Multispectral Coastal: 400 - 450 nm Red: Blue: 450 - 510 nm Red Edge: 705 - 745 nm 630 - 690 nm Green: 510 - 580 nm Near IR1: Yellow: 585 - 625 nm Near IR2: 860-1040nm 770 - 895 nm Panochromatic Multispectral ONA* ONA* 0˚ y H  igh capacity in various collection modes ONA: 0.46 m 0˚ ONA: 1.85 m 20˚ ONA: 0.52 m 20˚ ONA: 2.07 m y O  ptimised and flexible collection planning y D  irect downlink to German antenna for near real-time delivery * Off Nadir Angle (ONA) About European Space Imaging Based in Munich, Germany and established in 2002, European Space Imaging is the leading premium supplier of global very high resolution (VHR) satellite imagery and derived services to customers in Europe and North Africa. With almost 20 years’ experience, European Space Imaging has developed a reputation for expert and personalised customer service and an unbeatable track record for supplying tailored very high resolution imagery solutions to meet the diverse projects and requirements of their customers. Furthermore, European Space Imaging is the only European satellite data provider to supply imagery at true 30 cm resolution and who own and operate its own multi-mission ground station for direct satellite tasking and local data downlink. www.euspaceimaging.com | Arnulfstrasse 199, 80634 Munich, Germany | T: +49 89 130 1420

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Architecture of ResNet34-UNet model

UNet architecture for semantic segmentation with ResNet34 as encoder or feature extraction part. ResNet34 is used as an encoder or feature extractor in the contracting path and the corresponding symmetric expanding path predicts the dense segmentation output.

Architecture of VGG16-UNet model

UNet architecture for semantic segmentation with VGG16 as the encoder or feature extractor. VGG16 is used as an encoder or feature extractor in the contracting path and the corresponding symmetric expanding path predicts the dense segmentation output.

Architecture of ResNet34-FCN model

In this model, ResNet34 is used for feature extraction and the FCN operation remains as is. The feature of ResNet architecture is exploited where just like VGG, as the number of filters double, the feature map size gets halved. This gives a similarity to VGG and ResNet architecture while supporting deeper architecture and addressing the issue of vanishing gradients while also being faster. The fully connected layer at the output of ResNet34 is not used and instead converted to fully convolutional layer by means of 1×1 convolution.

Architecture of VGG16-FCN model

In this model, VGG16 is used for feature extraction which also performs the function of an encoder. The fully connected layer of the VGG16 is not used and instead converted to fully convolutional layer by means of 1×1 convolution.

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