Generating Motion Blur

[Robert Schleif]

Does anyone know a convenient method in PWP to generate a blur suggestive of motion?

[Bob Walker]

Robert,

I don't have any ideas, unless you want to do something heroic (displace many image copies along a motion line and superimpose them in a stack-images transform). MATLAB's image processing toolbox has functions to define a motion-blur kernel that can be used to generate a convolution of the image to produce a camera-motion-blur type effect. It ends up being a matrix-multiply of the image's RGB color planes with a convolution matrix.

If some objects in the image are moving (automobile driving by), and others not, then even this method would fail, since it would apply equally to every image pixel.

Bob W

[jsachs]

While there is no explicit transformation to do this you should be able to simulate horizontal or vertical motion blur by resizing the image in width or height and then resizing it back to its original width or height.