THANK YOU! That was exactly what I needed to accomplish my requirement. I was able to change subtotals with ALV Grid, but not totals. So changing to ALV List display and using the BEFORE_LINE_OUTPUT event, I was able to change the totals.
This was the solution that worked for me. I found the subform where the image needed to be and placed it first on the subform. The rest of the fields printed over that.