How to provide a custom option for an exposed filter in Views? I have a site in which members can upload pictures of themselves (imagine a personals site).  Users can upload up to five pictures, and each time they upload a picture, a rule increases the value of a custom field, Number of pictures.

Members can search for other members using a view.  This view has a number of exposed filters.

What I would like to do is add another option, Show members with pictures only.  Ideally, this would be a checkbox.  However, I have no idea how to add such a thing to a view.  I could add the Number of pictures field as an exposed filter, but since this is an integer, users would have to type "1", which is ugly and unintuitive.  How might I start to go about this?
if you are not able to achieve what you need with views default options.
You can create your custom views handler. In this case, it would be a filter handler.

https://api.drupal.org/api/views/handlers!views_handler_filter.inc/group/views_filter_handlers/7

https://drupal.org/node/1239866

Extending views functionallity to provide an approach to your problem