That's pretty great. I've wanted for a while to find a way to layer image effects onto Google Street View, to be able to move around the world in a sort of alternate processed reality. But afaik, there's no straightfoward way to add a filter like that unless you're Google. There's an image API, but the resolution is only 640x480. There's an undocumented image API with higher-res images, but you'll get banned if you make more than occasional usage of it. Perhaps it'd be possible to do it via a browser extension that renders the effects locally?

[edit: Just thought of one possible route. There's a WebGL beta for Street View; perhaps you could add effects by injecting some WebGL shader code, given appropriate local security permissions?]

So far I've been just experimenting with grabbing a few hundred images from the undocumented API and applying effects locally. This is the result of one experiment (hit [reload] at the top/right for new images): http://www.kmjn.org/projects/cyanocph/

This is fun for looking at street art: http://g.co/maps/ary5t

screenshot: http://farm8.staticflickr.com/7188/6886373098_84a16330a1_o.p...

Just figured that out. You have to disable MapsGL for that to work.