Bash pauses while application running

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# 1  
Bash pauses while application running

I want a really easy thing to happen, I want the bash to open a picture with QuickPictureViewer (qpv) and then some seconds or after a if function with some specific value that this process is terminated. The problem is, that the bash opens the picture and the script doesn´t go on (because the terminal is now for controlling the application) until i manually terminate the process showing the picture. How do I resolve that? Do I need 2 scripts for that?
# 2  
You may start qpv in background with & suffix:
qpv someimage.png &

# do_something here ...

kill $qpv_pid

# 3  
Did you consider running that qpv process in background?
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