Volume Digitization Of Maps And Georeferencing Services
GIS abbreviated as “Geographic information system” is a “system” (set of rules and automated software’s or front end) to manipulate information about earth and objects surrounding it. If you have learned geography in your school days you will remember the term “maps”. Maps are the representation of a geographic area on a piece of paper or canvas. It is difficult to view a large area, rivers, oceans, plants, minute creatures on a single canvas, so to visualize the area maps are useful. They are a medium to exchange and describe information about an area.
Maps are plotted on papers for human decision making from years. Researchers used to refer the maps during their course of study about the earth and resources on earth. Time keeps on moving irrespective of the persons who watch it. As time started moving; photography developed and technology cultivated the so called aerial photography
These maps or Aerial photographs are never useful to systems (computers – Tech savvy people often use the word “system”), they can understand only digital data in the form of 0’s and 1’s. So in-order to study the maps or aerial images it is necessary to convert them into digital form. “Digitisation” or “digitization” often spelled in this manner in different communities is a method used to convert an image or photograph to digital values.
Maps and georeferencing services are digitized for use in GIS systems. Volume digitization services are provided by different service providers who are into GIS services and provide all data processing and conversion related services for researchers, scholars and universities. The process through which GIS system receive input is as follows:
1. Aerial photographers take photos of different areas with a certain focal length capable to produce viewable pictures. They have private flights that fly around taking photographs; these photographs have overlapping over each other. When the flight moves over a fixed dimension several shots are taken, the flight moves several times over the same area to get several shots that can be used for better representation.
2. These aerial images are acquired and are stitched with several better shots taken from different angles. The stitched output is then sent to the processing unit which visualizes and monitors the minute details associated with the image and correct the flaws generated while stitching.
3. The final output makes a complete aerial image ready for digitization. The photograph being stitched is then georeferenced. “Georeferenced” means to locate geographic coordinates over the photograph. Once the image is georeferenced it is subjected to digitization.
It is necessary to locate coordinates or “control points” over an image to get it digitized.
Mostly Georeferencing is considered a part of digitization and people do not specify it separately but it is a separate process that requires attention. Volume digitization services are useful when a research firm is unable to acquire fresh aerial photos or “birds eye view “of an area. The task can be allocated to a third party to get the photographs pictured and converted to digital coordinate system.
Regards
SBL GEOMATICS
http://www.sblgis.com/Map-Digitization-Conversion.aspx
http://www.sblgis.com/contact.aspx
digitization services
By:Navya
By: SBL
About the Author:
Maps are plotted on papers for human decision making from years. Researchers used to refer the maps during their course of study about the earth and resources on earth. Time keeps on moving irrespective of the persons who watch it. As time started moving; photography developed and technology cultivated the so called aerial photography
These maps or Aerial photographs are never useful to systems (computers – Tech savvy people often use the word “system”), they can understand only digital data in the form of 0’s and 1’s. So in-order to study the maps or aerial images it is necessary to convert them into digital form. “Digitisation” or “digitization” often spelled in this manner in different communities is a method used to convert an image or photograph to digital values.
Maps and georeferencing services are digitized for use in GIS systems. Volume digitization services are provided by different service providers who are into GIS services and provide all data processing and conversion related services for researchers, scholars and universities. The process through which GIS system receive input is as follows:
1. Aerial photographers take photos of different areas with a certain focal length capable to produce viewable pictures. They have private flights that fly around taking photographs; these photographs have overlapping over each other. When the flight moves over a fixed dimension several shots are taken, the flight moves several times over the same area to get several shots that can be used for better representation.
2. These aerial images are acquired and are stitched with several better shots taken from different angles. The stitched output is then sent to the processing unit which visualizes and monitors the minute details associated with the image and correct the flaws generated while stitching.
3. The final output makes a complete aerial image ready for digitization. The photograph being stitched is then georeferenced. “Georeferenced” means to locate geographic coordinates over the photograph. Once the image is georeferenced it is subjected to digitization.
It is necessary to locate coordinates or “control points” over an image to get it digitized.
Mostly Georeferencing is considered a part of digitization and people do not specify it separately but it is a separate process that requires attention. Volume digitization services are useful when a research firm is unable to acquire fresh aerial photos or “birds eye view “of an area. The task can be allocated to a third party to get the photographs pictured and converted to digital coordinate system.
Regards
SBL GEOMATICS
http://www.sblgis.com/Map-Digitization-Conversion.aspx
http://www.sblgis.com/contact.aspx
digitization services
By:Navya
By: SBL
About the Author:
SBL Geomatics, an ISO 9001:14001 certified Information Technology enabled offshore outsourcing provider, focus on providing technology driven, customer oriented and tailor made IT Outsourcing solutions.Our professional Geomatics division, provides a complete range of GIS, Photogrammetry and CAD services which cater to any of your geospatial requirements. For details visit http://www.sblgis.com.