Tag Archives: autocad


I’ve been too busy to post a lot of little projects that were in the works at the end of the summer. They’ll have to trickle in unless they get displaced by new projects… I’m just happy that there are projects! This post is just to share a screen shot of a point cloud in autocad that shows the exterior of a stone barn. I’ve found that the density of points has a strong correlation to the content of the photos. In this case, we see that the stone surfaces create a very high density while the painted doors and such read almost not at all.

Screen Capture of point cloud derived from photographs of the stone barn at Morven Park, as viewed in Autocad 2011 software.


progress 5Posted here are some snap shots of the Renssaelerville Trinity Church project in progress. You can see from the image to the left that I am drawing elevations of both the building’s  interior and exterior.  To make sure that all of my drawings “agree” with each other I start off by blocking everything out and drawing everything at the same time, in a way. I will go back later and address details and such.

progress 1Here is a view of five drawings together, laid out with construction lines to help align all the moving prices into a coherent whole: a plan drawing with north- south- east- and west elevations flipped out to the side.  While the source information is in fact 3-D I find that viewing it simultaneously from different vantage points useful for (relatively) quickly constructing a series of architectural drawings.

progress 3Here is a view of the church’s main elevation. This shows a partially complete drawings laid over a rectified image that was shot from a distance with a long lense, so it is optically the faced is already flattened out pretty well with regard to the drawing. In oreder to draw individual portions in detail I will use portions of closer up images that are rectified to a series of planes rather than a single rectification plane.

progress 2 Here is a side view of the building, the north elevation. This shows a mixture of drawing and rectified imagery. On this side of the building I was able to see the roof tops well enought to rectify them as well as the straight ahead portions of the facade.

progress 4 Finally, here is another interior view that is comprised of a series of rectified images that are assembled into a whole in a mosaic like fashion. In CAD, each individual rectified image can be turned on or off, or set o be screened at 50% or whatever.  I try to create the drawings files with a simple hierarchy that allows for maximum flexibility by the end user.

All of these are snap shots or “screen captures” from AutoCAD drawings software which integrates the line drawing and raster imagery into a virtual 3-D space.  From this point they can be transformed into wire frame models, solid models, or 2-D architectural drawings, or simple printed and/or exported to other digital formats such as photo shop, or PDF files.