You have a perspective picture of something and an accurate 3D model. You want to set the projection in a Rhino perspective viewport so that the model lies on top of the picture. You might want to do this to validate that your model really is as accurate as you think it is. You may need to add more elements to the model to reconstruct a crash or construction scene (for the accident reconstruction bowling pin). Or you have modified your model, changed the viewport settings, or want the same rendering projection used to create a previous image …
Step 1: Open the file with the model in it and put add perspective picture as a wallpaper image in one of the viewports.
Step 2: Click in the viewport with the wallpaper image (to make it the active viewport), and run the PerspectiveMatch command.
Step 3: Carefully pick a point on the wallpaper image, then carefully pick the corresponding 3D point on the model. Keep picking pairs of image/3D points until you have at least 6 pairs.
Step 4: Press enter.
– Dale Lear