Category: stereo photogrammetry


I have made a lot of mistakes in the last four days and learned valuable lessons about AgiSoft StereoScan, the free program I am using to convert stereo photographs into 3-D meshes. I noticed a problem that when I blended the photos in Photoshop first the floor often melded with the material and StereoScan treated it as a floor plane. Download the 3-D model.

StereoScan lessons

StereoScan lessons

After a lot of trial and error, I found a way to blend multiple photographs and build a 3D model in StereoScan. I ended up manually selecting and deleting everything except the illuminated material in each layer of the sequence. Then StereoScan could map the volumes of the multi-frame packet.

stereoScan volumes

stereoScan volumes

This is the method for converting stereo pairs of photographs into a 3D model:

  • Record synchronized stereo photographs.
  • Manually delete everything in the frame except the illuminated material.
  • Load the blended left and right images into StereoScan
  • Create a 3-D model

The models may, of course, be imported with other programs. I used Rhino with V-Ray to make a quick render of one of the simplified surfaces.

Rhino with V-Ray render of original form

Rhino with V-Ray render of original form

Rhino with V-Ray render of rebuilt surface

Rhino with V-Ray render of rebuilt surface

AgiSoft StereoScan is a free program that can convert a stereo pair of photographs into a 3D model. I am exploring the technique of photogrammetry in stereo to convert ephemeral models into 3D, digital surfaces. This is the first test. The model may be orbited by clicking and dragging the surface. Download a pdf of the stereo photogrammetry test. The newest version of Acrobat reader is required to view the 3D surface.

Powered by WordPress | Theme: Motion by 85ideas.