Aerial 1947 PNG

GIS File Name

C3D_Tiled_Aerial_1947.jpg

Format

JPEG

Description

The City of Cambridge, Massachusetts, Geographic Information System (GIS) City-Wide 3D project provides a detailed three-dimensional model including the terrain, groundplan and buildings of the city. The city-wide model has been cut into one-kilometer squares for exchange with 3D design tools. Each file associated with the tiled 3D model is named with the prefix C3D_ then the tile name, e.g. G_5_, then the name of the dataset.

The tiled 1947 aerial photo layer is a black and white ortho-rectified aerial photo with a pixel resolution of approximately 1 foot.

Purpose

This aerial photo is useful as a historical record of ground conditions in 1947. It can be used to explore potential environmental issues associated with historic land use. It can be used to understand former building and terrain conditions for story-telling, stimulation of curiosity and to develop an infrastructure for understanding the history of Cambridge neighborhoods.

Download Layer Data

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Sources

Made from the 1947 Aerial Photos created by the U.S. Department of Agriculture. The photos were ortho-rectified using stereo photogrammetry by Infotec US under contract by the City of Cambridge.

Coordinate System

Universal Transverse Mercator Zone 19, WGS84.

Usage Notes

Being clipped exactly to the frame for each tile of the city-wide grid, these images are very easy to register and apply to the tiled terrain models. In SketchUp, groundplan images may be easily applied the terrain. From the Materials Window, use the eye dropper to select the terrain material, then choose the desired ground plan image in the Edit tab.

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