Language Selection

English French German Italian Portuguese Spanish

Unshaking and refocusing your photos

Filed under
Software

Whether by wind, vibration, or shaky hand, we have all taken blurry photos. But in the digital era, there is no need to despair -- you can remove shake and blur from your pictures after the fact. Several Linux-friendly utilities can help you.

Deconvolution is the general process that helps remove the effects of camera shake and blur. If you want to understand the math behind the process, start with the articles referenced at Wikipedia and you can find as much detail as you want. In a nutshell, it involves taking the Fast Fourier Transform of the image (which makes it easier to see the tell-tale signs of blurring), smoothing out the artifacts, then transforming the image back into its original form. It is a CPU-intensive process, but for a shaky image there is no better use of your MHz.

More Here




More in Tux Machines

Git 2.2.1 Released To Fix Critical Security Issue

Today's Git vulnerability affects those using the Git client on case-insensitive file-systems. On case-insensitive platforms like Windows and OS X, committing to .Git/config could overwrite the user's .git/config and could lead to arbitrary code execution. Fortunately with most Phoronix readers out there running Linux, this isn't an issue thanks to case-sensitive file-systems. Read more

Ubuntu 15.04 Alpha 1 For Its Various Flavors

While Ubuntu itself no longer puts out alpha/beta releases in favor of just testing out the daily Live ISOs, the various Ubuntu flavors still participating in the traditional release process have done their first alpha releases this afternoon for Ubuntu 15.04. Read more

Robolinux 7.7.1 LXDE Runs Windows Apps with Stealth VM

Robolinux 7.7.1, a fast and easy-to-use Linux distribution based on Debian has just received a new desktop environment, LXDE, making this the third second flavor of the distribution. Read more

Jolla's Sailfish OS Update 10 Is Now Available

The tenth update to Jolla's Sailfish mobile operating system is now available. This update is version 1.1.1.26 and is codenamed Vaarainjärvi. This latest update to Jolla's Sailfish OS includes the device lock now supporting alpha-numeric codes, copy-paste support between Android and native Sailfish apps, Mail app improvements, new overlays for maps, search improvements, unification to the accounts framework, new MMS settings, UI improvements, and an assortment of other improvements. Read more