Here’s a new version of the ImageStreak Class written for AS3.
http://webdevils.googlecode.com/files/ImageStreak.zip
This class loads an image file. Creates a new Bitmap and BitmapData objects. Then it procedes to draw the image one pixel column at a time drawing the current pixel across the image. After it’s finished with the first column it moves on to the next. Until the entire image is drawn.