Planimetric Mapping

We are living in a generation where most common and important word is ‘smart’. From smart people to smart phones and from smart maps to smart cities everything is getting smarter. Geospatial technology is progressing by leaps and bounds towards this smartness. The technology itself is getting smarter and contributing in other smart developments as well.

                                         This kind of urban planning need a smart database – plannimetric maps.

Smart is that which is accurate and precise. This concept needs a database with almost zero tolerance for errors. Such data is produced in planimetric mapping. This is something like ‘giving life to an image’. This kind of job is executed using high resolution satellite imagery or aerial photographs or UAV imagery. This type of map simply depicts features horizontally and vertically and the accurate distances between them. This include creation of a database having multiple layers like Paved Roads, Unpaved Roads, Drive ways, Parking areas etc.

Aerial photographs are used in most of the cases. These photographs are used to identify the planimetric data, using advance software tools and experienced photogrammetry team. Stereo pair aerial imagery is used in photogrammetry process to identify the exact position of surface points. Vector data produced in this method consist both manmade and natural features. These features are represented three dimensionally as lines, points and polygons. Anything visible in an imagery can be digitized.

                                                       High resolution aerial photographs are used

This is an act of detailed mapping and involve almost all the features visible on a stereo pair. Some of the common features are as follows:

Roads (paved/unpaved)	Shoulders	Driveways	Parking	Concrete	Alleys
Curb	Steps	Trails	Road Median/Island	Golf Caret Path	Building/Courtyards
Ruins	Decks	Patios	Canopies	Tanks	Silos
Bunkers	Foundations	Smokestacks	Water Tower	StairWays	Pools
Windmills	Billboards	Mailboxes	Parking Meter	Bus Stop	Retaining Walls
Rock Wall	Cattle Guard	Gates	Fences	Man Hole	Catch Basins

Many other features are there which can be extracted as per the requirements.

                                                                                            Output Data

3D planimetric data is useful in many ways for spatial analysis. Some are as follows:

Geospatial technology is getting better day by day. Planimetric maps consist both manmade and natural features. They are created using photogrammetry technique. Stereo pair imagery of aerial photographs are used for this purpose. Many classes are involved like roads, buildings, driveways, parking and many more. These precise and accurate maps are used for urban planning, utilities planning, infrastructure management, taxation etc.