Working with referenced images, line them up and scale

[.chad]

when working with referenced images from clients i frequently find that i can get one portion of the image to line up and scale correctly, but other portions end up grossly out of scale in one direction or the other. is there some way to correct this or at least work with it?

the attached image has a scan in the background, and the blue line is survey information from an engineer.

[jpaulsen]

With AutoCAD you can move, scale and rotate to get two points to match. Unfortunately this does not help if the image is distorted.

You would need Raster Design to "rubber sheet" the image to more than two points.

[ccowgill]

you can make the image into a block and that will give you more control over scale, you can then have different x and y scales for your image