Sometimes wind, vibration, or shaky hand, make taken photo blurry and there is no possibility to retake it. You can remove shake and blur from your photos and make them rather sharpen. Unshake cleans up pictures in all of these cases, usually making the resolution of a blurred picture much better than that of the original. Unshake can also remove dithering and rasters, and it can work through the lines found on magazine pictures. While there are both free and paid similar filters which produce alike results, the real point of Unshake is that it does it automatically.

Unshake 1.5 is a Java-2 and C program based on deconvolution algorithm which improves blurred and shaken photographs by working out the form of the blurring, then deducing what the picture would have looked like if it had not been blurred. Because it is written in Java, once you have installed Sun’s Java 2 (Java Runtime Environment) all you have to do is to unzip one file to install Unshake on your computer. Unshake is closed source, and the license prevents use for commercial purposes.

Unshake attempts to determine on its own how much correction to apply. The actual processing time can vary greatly depending on what it decides ( at the default settings, 40 to 50 seconds is a reasonable estimate time for a 1.3 megapixel image).The Time control allows you to increase time to Unshake’s process to perform more detailed analysis. By default it is set to “x1″ meaning that Unshake will perform its transformations within the Estimate time.

When you open a photo, you start by resizing the photo window to show just the portion of the image that you are most concerned about. If you choose the wrong portion of the image, Unshake could misidentify portions of it as blur and overdo the correction. When the window is properly set, click on the Estimate button and Unshake will give its best guess as to how long the process will take. You can adjust the blur severity and correction quality parameters and get new estimates. To see the results, just click the DeBlur button. Unshake will perform the image correction and open the result in a new window, which you can then save.