This is easy to reduce a color photo to a B&W image (any photo software or any B&W photocopier can do it). But the reverse operation seems difficult at best, impossible in most cases. However, a team of French scientists from the French INRIA (Guillaume Charpiat, Matthias Hofmann et Bernhard Schölkopf) presented recently an algorithm that succeeds to rebuild the color information from a B&W photo. And with some success.

On the image on the left, Leonardo Da Vinci’s Mona Lisa has been converted to black and white (A), using color data and textures from a similar image (B), the algorithm built a color image again (C) not too far from the original (D).

Analyzing this work, I’d say that part of the differences between the result (C) and the original (D) come from the quality of the conversion to Black & White which led to an image quite hard (a bit more contrast than needed).

Impressive result on photos, you can expect to see it applied to moving images (and movies).

Source: Futura-Science.

I have collected a few posts at LifeHacker that I wanted to share with you because they are concentrating on some easy and powerful techniques to be used with Photoshop.

• Create Eye Catching Color Effects on Black-and-White Photos
• Create Photorealistic Reflections in Photoshop
• Reduce Redundancy by Creating Photoshop Actions

Usually, I would not comment about upcoming software applications and tools, but today there is an rumour that may be very important. We all know that switching from Windows to Linux is a difficult move because we have been used to so many applications available on one Operating System but not on the other (in my case, how could I do without Photoshop?)

Here comes Wine, an open source tool supposed to allow you to run native Windows applications in your Linux PC. In beta during years, Wine was incomplete and unable to provide the ultimate dream of OS migration, but things seem to be changing. Google invested a lot of effort, and it is said that version 1.0 of Wine is upcoming.

One of the important things I noticed, of course, is that there are plenty of games now supported (Baldur’s Gate II – Throne of Baal, Call of Duty 2, World of Warcraft, etc.) and I see that both Photoshop CS2 and CS3 are also in the list.

You (and I) should be trying this…

SitePoint is giving away (for a limited time only) an excellent e-book about PhotoShop. It’s well worth the effort to donwload the PDF file.

SitePoint sensational Photoshop book is now FREE to Download!