{"id":2283,"date":"2019-02-28T12:57:00","date_gmt":"2019-02-28T11:57:00","guid":{"rendered":"http:\/\/www.gis.si\/?page_id=2283"},"modified":"2019-02-28T12:58:35","modified_gmt":"2019-02-28T11:58:35","slug":"data-acquisition-and-processing","status":"publish","type":"page","link":"https:\/\/gis.si\/en\/data-acquisition-and-processing\/","title":{"rendered":"Data acquisition and processing"},"content":{"rendered":"
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Based on many years of technical expertise in the field of manipulation with different forms of spatial data, the Geodetic Institute can offer its customers several methods of data acquisition and processing. We use mainly our own sources, knowledge and equipment, while for mass acquisition we provide adequate link between the contractor, contracting authority and the final user of our services.<\/div>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1545212394425{padding-bottom: 25px !important;}”][vc_column width=”1\/2″][vc_column_text]\n

With every acquisition and before the processing of spatial data we make sure that they are adequately spatially placed (different methods of acquisition use different procedures of georeferencing). However, acquisition and processing are not enough; therefore, our work processes include different quality controls.<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_column_text]\n

Precision of spatial data is important information for the user and is indispensable in the evaluation of the quality of the results of data processing. For this reason our services are subjected to adequate standards, which assures adequate knowledge about positioning and thematic accuracy and completeness of spatial data, as required for successful implementation of any spatial analysis.<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1545212369940{padding-top: 25px !important;padding-bottom: 25px !important;background-color: #aec3d3 !important;}”][vc_column][vc_column_text css=”.vc_custom_1551355065176{padding-bottom: 15px !important;}”]\n

DATA ACQUISITION<\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1545212383644{padding-bottom: 25px !important;background-color: #aec3d3 !important;}”][vc_column width=”1\/3″][vc_single_image image=”1804″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

When\u00a0satellite images<\/strong>\u00a0are needed, we purchase them directly from distributors, by specifying our precise demands regarding the level of processing, location and quality of data. For different the data of different spatial resolution and contents are acquired, with adequate channels of electromagnetic spectrum.<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1805″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

Since we know the suppliers of\u00a0aerial photographs<\/strong>\u00a0and are, most importantly, familiar with the technology, we are able to select the right provider for any required service or product. Aerial photography can be performed from aircrafts, ultra light aircrafts and helicopters or with unmanned aircrafts or helicopters.<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1806″ img_size=”234×234″ alignment=”center” style=”vc_box_rounded”][vc_empty_space height=”10px”][vc_column_text]\n

For the data acquisition of linear objects (roads, railways, power lines, etc.)\u00a0aerial laser scanning and photography\u00a0<\/strong>is used. For the data acquisition on the national level independent aerial laser scanning is applied.<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1550162626087{padding-top: 15px !important;padding-bottom: 25px !important;background-color: #aec3d3 !important;}”][vc_column width=”1\/3″][vc_single_image image=”1809″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

For the data acquisition at\u00a0small areas<\/strong>\u00a0or for\u00a0individual objects<\/strong>\u00a0digital camera with calibrated metric lens or calibrated video cameras are used. For more precise works at small surfaces terrestrial laser scanner or modern geodetic instruments are used.<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1808″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

For the\u00a0cadastral\u00a0<\/strong>or\u00a0topographic surveys<\/strong>\u00a0GNSS instrument is used. Its type and survey method differ according to the required plane and\/or height precision of the measured positions. We also provide the acquisition of different\u00a0GIS data<\/strong>, where their contents are more important than their precision.<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1807″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

We also assure data acquisition from different\u00a0analogue media<\/strong>, such as maps, plans, aerofilms, contact copies of aerial photos or paper documents. At the same time we provide adequate spatial reference of the data acquired in this way.<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1545048993878{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_column][vc_column_text css=”.vc_custom_1551354975530{padding-bottom: 15px !important;}”]\n

DATA PROCESSING<\/h2>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1545049231181{padding-bottom: 25px !important;}”][vc_column width=”1\/3″][vc_single_image image=”1816″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

Today, the satellite images offer satisfactory geometrical and semantic information for various aplications regarding data of Earth surface. To get geolocated data from satellite images thay need to be orthorectified. We provide\u00a0orthorectification for differend satellite images<\/strong>, such as WorldView, GeoEye, QuickBird, Ikonos, Spot, …<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1815″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

We provide high quality\u00a0transformations<\/strong>\u00a0that allow the transition and use of data in different coordinate systems, datums or cartographic projections. For the transformation of spatial databases, we developed a web service called\u00a0Ekspres koordinator<\/a>\u00a0(Express coordinator).<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1814″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

With the evaluation of satellite images and aerial photographs information about space and phenomena shown there can be obtained. With the help of\u00a0stereo evaluation<\/strong>\u00a0multidimensional spatial data about the selected objects or terrain are obtained.<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1545049231181{padding-bottom: 25px !important;}”][vc_column width=”1\/3″][vc_single_image image=”1808″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

We also provide classification of a point cloud<\/strong>\u00a0obtained from laser scanning that separates points into adequate content classes (relief, buildings, high\/medium\/low vegetation, waters). On satellite images we also classify pixels of similar characteristics.<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1812″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

Automatic classification offer fast and simple overview of actual state on the Earth surface. We make all kinds of\u00a0topografical layers using automatic classification<\/strong>, such as\u00a0buildings, roads, water, vegetation and individual plants, …<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_single_image image=”1813″ img_size=”234×234″ alignment=”center”][vc_empty_space height=”10px”][vc_column_text]\n

We examine and process data of\u00a0vast spatial records\u00a0<\/strong>(real estate, topographic, cartographic, GIS) and prepare data in the form adequate for the use in tasks from different areas (real estate register, land quality evaluation, mapping, programming of web applications).<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row]\n<\/div>","protected":false},"excerpt":{"rendered":"

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However, acquisition and processing are not enough; therefore, our work processes include different […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"tpl\/page_fullwidth.php","meta":{"footnotes":""},"class_list":["post-2283","page","type-page","status-publish","hentry"],"yoast_head":"\nData acquisition and processing - GIS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gis.si\/en\/data-acquisition-and-processing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Data acquisition and processing\" \/>\n<meta property=\"og:description\" content=\"[vc_row css=”.vc_custom_1550161962698{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_column][vc_column_text][\/vc_column_text][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1545212394425{padding-bottom: 25px !important;}”][vc_column width=”1\/2″][vc_column_text] With every acquisition and before the processing of spatial data we make sure that they are adequately spatially placed (different methods of acquisition use different procedures of georeferencing). 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