gHacks technology news » photo manipulation http://www.ghacks.net A technology blog covering software, mobile phones, gadgets, security, the Internet and other relevant areas. Tue, 24 Nov 2009 23:31:44 +0000 http://wordpress.org/?v=2.8.6 en hourly 1 Enlarge Photos With Smilla Enlarger http://www.ghacks.net/2009/07/27/enlarge-photos-with-smilla-enlarger/ http://www.ghacks.net/2009/07/27/enlarge-photos-with-smilla-enlarger/#comments Mon, 27 Jul 2009 12:16:51 +0000 Martin http://www.ghacks.net/?p=14810 microsoft windowsHundreds of different solutions exist to reduce the resolution of photos. These solutions are available as software programs but also online services. Quality is usually not an issue when reducing the resolution of a photo. It does becomes problematic on the other hand to find a solid computer program to enlarge photos. Enlarging photos meaning to increase the resolution of the photo so that it becomes available in a higher resolution. This can be very useful in situations where low resolution photos have been created by a digital camera or cell phone.

Smilla Enlarger is a portable software program for the Windows operating system that can be used to enlarge photos. The results depend on the resolution and quality of the source photo and the resolution increase entered by the user. They do look pretty good on average though making Smillar Enlarger one of the few valid one-click solutions to enlarge photos.

enlarge photos

The program basically works the following way. The user loads a photo into the software program. The photo will be displayed automatically on the left side of the interface. A suggested new resolution will be automatically selected and a zoomed in area of the source photo will be displayed on the right side. The target resolution of the enlarged photo can be changed by moving the zoom slider or by entering a value for the width and height manually.

It is possible to change the area that is being used for the preview to ensure that the most important areas of the photo display fine in the new resolution.

The controls at the bottom can be used to fine tune the enlarged photo further to increase the overall quality. The following five controls are available as sliders in the program: Sharpness, Flatness, PreSharpen, Dithering, DeNoise.

A click on the calculate button will start the photo conversion. The enlarged photo will be saved in the source directory by default. Smilla Enlarger (via Essential Freebies) is a great software program for users who want to enlarge some of their photos or images.

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]]> http://www.ghacks.net/2009/07/27/enlarge-photos-with-smilla-enlarger/feed/ 2 How To Identify Manipulated Images http://www.ghacks.net/2009/03/12/how-to-identify-manipulated-images/ http://www.ghacks.net/2009/03/12/how-to-identify-manipulated-images/#comments Thu, 12 Mar 2009 19:09:08 +0000 Martin http://www.ghacks.net/?p=11160 Is an image in its original stage or has it been manipulated in an image editor? Image editors have become that good that it is virtually impossible to tell by looking at the image in question unless it contains flying elephants or similar unrealistic footage. But what about that ufo image that your friend send you, the images from the girl that you met on a dating site or the images that have been published on digital camera manufacturers site?

JPEG Snoop is a tiny portable software program that can analyze the ins and outs of any digital image that the user loads into it. Supported are various image formats including jpg, pdf, crw, dng, cr2, new, orf, pef, thm and even mov and avi.

The software program will display many information about the image in a text editor like interface. The interesting part for users who want to identify if an image has been manipulated is at the end. The program will compare the compression characteristics of the image and assign an assessment class to it in the end.

Four assessment classes are defined:

  • Class 1 – Image is processed/edited
  • Class 2 – Image has high probability of being processed/edited
  • Class 3 – Image has high probability of being original — NOTE: Please see description below!
  • Class 4 – Uncertain if processed or original

identify manipulated images

We mentioned earlier that JPEG Snoop is able to process video formats as well. It can analyze a single frame of a video that is loaded into the software. The program might be interesting for users who regularly need to analyze the ins and outs of images.

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