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Figure 2.

Photograph of the active normal fault modeled in this work (A). (B) Field set up and measurements taken before image acquisition. A ruler is used to measure the length between two points, each photographed for later recognition. A stand (compass holder, CH) is placed on the outcrop and its attitude measured defining the CH strike. The operator can then proceed with the photo/video acquisition providing that the CH is left on the outcrop to be included in the model. (C) Dense point cloud of the Photo Model. In the model, four markers are added, representing the two points whose distance was measured with the tape, and two points along the CH strike. The θ, ξ, and ρ vectors of the images are also indicated.

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