Need some idea to combine multiple image plots with overlapping region!

I have multiple image data with overlapping scale, and I want to combine them all. Can anybody give me some idea how I can do this using Igor? Thanks!
I don't think there is a general answer to this question unless you specify what rule you apply to determine the output for the overlap area. Here is a simple example:

// generate two sample images
Make/n=(10,20) ddd=x*y,eee=x
// modify the scaling of the second image to provide an offset.
SetScale/P x 8,1,"", eee;DelayUpdate
SetScale/P y 9,1,"", eee
Display;appendimage ddd
Appendimage eee


In this case, the order of appending the images determines what happens in the overlap area.

If the images have 100% overlap then you need to determine how you want to combine them. One option is to use the ImageBlend operation. Another option is to display the individual images in one Gizmo plot.
Okay! I am appending one image over another, and I will check the ImageBlend option. Thanks!