Tad Pfeffer surveys glaciers. Currently a professor at the University of Colorado and fellow of the Institute of Arctic and Alpine Research (INSTAAR), he has spent the last 30 years studying these rivers of ice as barometers of climate change, and his work finds him mapping ice flows and cliffs in some very remote places. […]
In this tip video we show how to define which photographs are used to texture meshes in PhotoModeler. The video first shows how Dense Surface Models (DSM) are, by default, assigned to one photograph for extraction of texture, and how this can lead to un-textured areas. A multi-photo texture material is assigned to the […]
In our last blog post we showed a tip video on how to set up a coordinate system in PhotoModeler from multiple known 3D points using a multi-point transform. With the new EGE (External Geometry Explorer) Add dialog (that was revamped in a recent release), customers have been asking how to set up scale, translate […]
This video tip demonstrates how to set up a coordinate system in PhotoModeler from multiple known 3D points. This is useful when survey data or geographic data is available and you want the PhotoModeler project to be aligned (same position and rotation) as the external coordinate system. The 3D points can come from a survey, […]
We have completed an extensive accuracy study of PhotoModeler’s 3d scanning capability called Dense Surface Modeling (DSM). The full accuracy study article can be found here: Quantifying the accuracy of dense surface modeling within PhotoModeler Scanner. The article shows that PhotoModeler Scanner can match (if not exceed) the accuracy of a laser scanner. Using […]
This tip video demonstrates a technique available in the new PhotoModeler 2012.2 release. If you have a 3D point cloud from a 3D scanner (like a laser scanner) that you would like to match to a digital photo to color the points, PhotoModeler 2012.2 can do that. The 2012.2 release is called the “Laser Scanner […]
Often when creating Dense Surface Models (DSM) you need to trim out part of the image to reduce noise and improve efficiency. This trimming is done with DSM Trims – which are user-defined polygonal regions. For a more precise and somewhat more automated trimming method, DSM Masks can be used. A DSM Mask is a […]
The 3D view of a PhotoModeler project can be animated (flyby, fly-around, etc.) and exported as a video for local study, a GIF file for use on the web, or uploaded directly to Youtube. This tip video shows the steps and some of the options.
To create a 3D object in PhotoModeler the object usually has to be visible on multiple photographs. The process of ‘marking’ and ‘referencing’ the object (point, edge, curve, cylinder, etc.) on more than one photograph is what determines its 3d position in space. When you are viewing a photo with an image of an object […]
A great way to analyze data from PhotoModeler is to display one of the many Table Views (such as the 3D Points Table, or the Photos Table), and export it to Excel. You can then use the power of Excel for sorting, analysis, etc. This video shows the easy steps to copy/paste from PhotoModeler to […]