Day Lily Aura is an example of Digital Collage.  It a layering of two photographs, one of which the color has been inverted and overlayed to created the purple highlights in the image.  I have not used filters on either image.

I printed this digital fine art print on acid free watercolor paper with ultra chrome inks that have been tested to resist fading for up to 100 years.

I print, sign and number each piece in the limited edition of 50.