Green Hippo

Projector Alignment

The alignment tool is used to align projectors in SHAPE to the real world projector.

To enter alignment mode,
Right Click on a projector-> Alignment
Or choose Alignment in the Layout dropdown

HOW TO USE

  1. Select a projector to align.
  2. Use the mouse to select a vertex on the model to align with.
  3. Press Enter to enable a cross hair on the output.
  4. Use the Arrow keys to move the cross hair to exactly the same position on the real model.
  5. When you are happy with the position press Enter again to confirm that point.
  6. Notice a new correspondence appear in the correspondence panel.
  7. Repeat steps 2-7 4 times to see your model jump into the correct position.
Arrow keys alone 1 pixel movement
Ctrl + Arrow Keys 20 pixels movement
Shift + Arrows Keys 100 pixels movement

After six points try using the tick boxes in the Alignment Point panel to add and subtract points from the alignment algorithm to see if some combinations are better.

To exit Alignment press the

Home button or right click-> Home.

Alignment Properties

Sample Selection

Here is where multiple different alignment samples can be created and toggled on or off. With multiple alignment samples turned on, the position will be averaged between the enabled alignment samples. This can be used to gain a more well rounded alignment, or even for iterating alignments over a long running project.
Each alignment point can also have a unique name by changing the entry under Sample Settings.

Alignment Points

Here you will see points you have aligned for the selected Alignment Sample. Its 3D coordinate and its 2D coordinate.

Estimation Input Values

Throw Ratio: If you know exactly your projectors Lens Ratio enter it here and lock it for a very accurate alignment. If you are unsure of its exact ratio due to zoom leave it unlocked. If unlocked SHAPEs algorithm will best guess your Projectors Lens Ratio once you have entered 4 correspondences.

Lens Shift: If you know exactly your projectors Lens Shift enter it here and lock it for a very accurate alignment. If you are unsure of its exact shift leave it unlocked. If unlocked SHAPEs algorithm will best guess your Projectors Lens Ratio once you have entered 4 correspondences.

Alignment Style

Here you can decide what alignment style you would like to align with, Cross Hair or Checkerboard.
Once you have chosen the mode you can customize it for your situation.

Auto Alignment

For more information on Auto Alignment please see the AXIS manual.