Sketching How do I? > Deform an image to correct perspective

Image Deformation and Image Warp Tools

Designers often need to adjust the shape of an image layer for many different reasons; it could be simply a matter of making a sketch wider or taller, or to even correct the perspective viewpoint of a sketch. This series of How-to topics provides examples of how the AliasStudio image deformation tools operate.

Global Image Deformation Techniques

Scale Image Layer
Non-Proportional Image Scale Layer
4 Point Image Deformation
Perspective Image Deformation
Skew Image Deformation

Local Image Deformation

Curve Shape Warp

> Why deform images

The image deformation tool allows you to global change shape of an image layer through the following styles of interaction.

Non-Proportional Image Scale Layer
4 Point Image Deformation
Perspective Image Deformation
Skew Image Deformation

Deform an image to correct perspective

Import the image (File > Import > Canvas image ) or pick the layer to be adjusted in the paint layer editor.
Choose Paint Edit > Deform image layer . The active image layer will display manipulator handles like below.





Current settings of this tool:





Pick and move the right top corner handle using the . (Action = Unconstrained corner deformation)





Select and move the center right handle with the to make the image wider. (Action = Unconstrained edge deformation)





Select and move the left top corner handle with the . (Action = Unconstrained corner deformation)





Select and move the right corner handle with the to make the image wider following the 2 point perspective guide lines. (Action = Constrained corner deformation)
By using the vertical & horizontal bias controls in the option window you can deform the center of the image. i.e. Pull or push the center of the image towards or away from the perspective point.

Finished sketch after deformation: