This video is a good step by step introduction to the process of setting up and digitizing a 2D template, start to finish. It is focused on a setup with a moving (un-mounted) camera that can be reused multiple times for different patterns. The method shown can also be used with a mounted camera, where the camera or table might move.
This video describes how to digitize a template pattern once the setup has been completed. It describes how to create the 2D data (lines or corrected photos), and how to export to your favorite CAD package. Also see the Auto-Trace video.
Establishing Vehicle Speed from Surveillance Video
3rd-party video. This video, created by Ben Molnar of Lightpoint Data, demonstrates how to use a laser scan of a scene to extract data (such as vehicle speed) from video surveillance footage. Note that the video frame extraction can be done by PhotoModeler or VLC as well.
Adjusting the lighting in a 3D view can make additional surface details easier to see. A 3D view has a head and side light which can be adjusted independently. This video shows how to adjust them and how to move the side light around.
Accurate camera alignment can be achieved in 3D Studio Max using photogrammetry. PhotoModeler outputs full camera positions and matching image planes. The optional idealize stage remaps the images to account for lens distortion, improving the alignment.
The size of the image thumbnails on the Photo List pane can be adjusted using the + and - buttons on the toolbar. The available sizes and other settings (such as if the image file name is displayed underneath) can be adjusted on the Preferences dialog.
This video shows how to use PhotoModeler Premium to import a point cloud from a laser scanner, and align it with a photo so the RGB color for each point can be extracted from a single photo. Similar techniques can be used with multiple photos.
When creating a best fit plane PhotoModeler will align the rectangle with the first 2 points selected. This video shows how this can be used to control the planes rotation and how the size property can be used to adjust the scale of the plane.
Determining a suspect's height from an unknown surveillance camera
Using PhotoModeler, a suspect's height can be measured from a single photo from an unknown camera. This technique shows the use of control point data to solve the camera position. This video shows one of the techniques described in the KB article "Using offset points for forensic height".
Extending cylinders, lines or edges and measuring their intersection point
PhotoModelers cylinders, lines and edges all have a property that allows the 3D view to extend their length allowing for visualization of intersections. Additionally, selecting multiple objects calculates their closest intersection point.
Improving textures using Image Masks and Mask mode
If a projects photos include unwanted areas or occlusions (such as cars or people walking by, or static items like trees or posts) these can be removed from textures and orthographic photos using masks. The mask can be created externally or via the Mask mode tools.
Point Review Mode is a great way to examine the location of a point across all photos it is marked on. Selecting a point shows a zoomed in view of all photos the point is marked on in the Point Review pane.
This video shows what happens when Surface Draw is place on the wrong surface (here outlining areas of boat decking), and how to fix it by assigning the correct surface. Surface Draw points, lines, or curves, assigned to a surface in PhotoModeler that does not match the true real-world surface will not calculate in the correct 3D position. This means, when they are viewed from on photos from other angles, their positions will not line-up and match. To fix this, the correct surface is assigned to the points and the correct 3D position are automatically calculated.
During referencing mode the active reference point with-in the selected source points can automatically advance to the next point and will be reset to the start when you move to another destination photo. If you prefer to reference between several photos at once you can turn off auto-advance and manually control when the source point switches.
Using multiple frames from a static camera position
If a camera(s) position remains fix and you would like to use multiple frames from this position you can replace the image data without needing to re-orient the photos. This can be useful when trying to obtain measurements from a security camera or when using a fixed camera set-up to measure a dynamic scene.
Use PhotoModeler's Surface Draw tool to model and measure a complex shape that lies on a simple surface. The example uses a kitchen sink cutout but the technique can be applied to fields like boat decking, templating, forensics, building design, restoration, archaeology, etc.