Add an image to a views title (Taxonomy Term View)
I would use Panels for that. You may combine any elements from Drupal on the same page (node fields, views, terms, blocks, etc.) with Panels.

With this module you can edit the taxonomy term page as you wish (Structure > Pages > Taxonomy view > Active then edit).

In the Content section, after setting path, context and layout, you add your taxonomy term custom image field, followed by your taxonomy term name (with a little CSS float, you will have your image on the left).

Finally, you add your View below (do not forget to activate the Chaos tools sub-module "Views content panes") and you're done.

Panels needs a little practice but it is a powerful tool to work on page templates.