Suppose you have an older image, you take a photo of it and email it to us. That was our first job in the GIS sector. Many American companies used to send us photos, we would convert them into Vector on CAD software and send them back. These hand-drawn images were called raster images." Since there was no computer back in the day, it used to be drawn by hand. All the raster images of plans, drawings, house plans, road plans, municipality plans etc were digitised through a vector. "In America and Europe, there was large-scale digitisation of all raster images back then. We worked with American firms on Geographic Information System (GIS) related tasks," Sarwar said. Sarwar Alam established the IT-enabled Decode in 1997. Western companies would send Decode raster images to make them digital. Back in the 1980s and 1990s, this was a thing in the West. "We were part of it."ĭecode started its journey by transforming raster images (representing a two-dimensional picture as a rectangular matrix or grid of square pixels) into digital formats in its early days. "The third DAP was based on satellite images where RAJUK asked us to conduct the ground survey for them, for example, the digital elevation model, surface model etc," Sarwar said. Then the client, for example, asks for specific requirements – a 3D model on a particular part.
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