February 17, 2007

How the Healing Brush came to be

The new issue of Computer Graphics World features an article from Adobe VP of engineering Dave Story, discussing the origins of the Healing Brush*.  He writes,

The inspiration for the Healing Brush came from something you might hear in a Physics 101 lecture: When you place a piece of metal on a heated surface, heat diffuses through the metal until it reaches a steady state. But what does heat diffusion have to do with pixel restoration? More than you might think.

Dave mentions Poisson image editing and the Laplace equation, but overall he keeps the discussion out of the techier weeds.  If you eat that stuff for breakfast & want something more bracing, you could try this math-heavy 1-pager on covariant image reconstruction from Todor Georgiev, who is featured in Dave’s write-up.

*On the off chance you’re unfamiliar with this technology, here’s a PDF for background on the Healing Brush.

2:25 PM | Permalink | Comments [2]

Panopalooza: From Barcelona to the Moon

It’s rough–rough!–when a humble photog like me finds himself pursued from city to city by someone much more capable behind the lens.  But that’s the situation in which I found myself last week, when Dzone Magazine editor Hans Frederiks* (brother of Adobe’s own Ton Frederiks) joined us in Amsterdam, then in Barcelona.  I found time to squeeze in a few panoramic shots, but every time I’d turn around, Hans was shooting & had already uploaded images to his blog.  It’s all good, though, and I wanted to pass along a few of his images (stitched together with Photoshop CS3):

Since folks seemed to enjoy my Paris panorama, here are a few more from the journey**:

Figuring that if you’ve read this far, you must like panoramic flavor, so I’ll pass along a few more:

*I also can’t offer up phrases like "Eindelijk sneeuw! De lichtmeester ‘at it again’!"  But I can enjoy the sound. ;-)

**Note: We’re still fine tuning the Zoomify implementation in Photoshop.  The output here is generally nicer than what you can produce with the CS3 public beta, but we still have some work to do (e.g. the panos are a bit soft when they first load).  Also, I’m trying not to Zoomify things just for the sake of doing so, and instead I want to use the feature only when it adds value (and when it doesn’t let you see just how noisy some of my captures are!).

Oh, and one more thing: This is post #500 on the ol’ blog-blog-revolution.  I hope you enjoy the reading as much as I enjoy the writing.

11:24 AM | Permalink | Comments [3]
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