For installation, just type
$ sudo apt-get install qiv
Invoke qiv in command line, and there are many many options to meet most requirements.
To show the image with its transparent background, the argument -p has to be used:
$ qiv -p IMAGE_FILE.png
Below is a screenshot of my own test. Note that the original image was save as png file with transparent background.
|Use qiv to show image with transparent background.|