Christ the Redeemer Reconstructed in 3D

摘要

Fascinating images of the statue of Christ the Redeemer in Rio de Janeiro, Brazil, were seen around the world during last year's FIFA World Cup. The famous statue is not only an icon of the city, but is also a marvel of engineering. The monument has a total height of 38 metres and a 28-metre arm span (Figure 1). Built from reinforced concrete and covered with triangular soapstone tiles, it looks over the city from the top of the 700-metre-high Corcovado Mountain. The statue was designed by French sculptor Paul Landowski and built by the Brazilian engineer Heitor da Silva Costa between 1922 and 1931. There were no accurate 3D models of the statue up until now as its size, location and challenging weather conditions obstructed the use of existing technology such as Lidar. In October 2014, however, the statue was successfully captured using a UAV in the project called 'Projeto Redentor'.