How to hide the true file-names of the design-Motifs in the frontend?

Is there a possibility, either

a.) NOT to display the (true) file names of the design motifs in the Frontline catalog, or

b.) to display a different, optional title for the images instead of the true file name?

In this way, one could name the motifs SEO-suitable and would not have to worry about the logical arrangement of file numbering.

Thank you, best regards!