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Image Editing

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Image editing encompasses the processes of altering images, whether they be digital photographs, traditional analog photographs, or illustrations. Traditional analog image editing is known as photo retouching, using tools such as an airbrush to modify photographs, or editing illustrations with any traditional art medium. Graphic software programs, which can be broadly grouped into vector graphics editors, raster graphics editors, and 3d modelers, are the primary tools with which a user may manipulate, enhance, and transform images. Many image editing programs are also used to render or create computer art from scratch.

Basics of image editing

Raster images are stored in a computer in the form of a grid of picture elements, or pixels. These pixels contain the image’s color and brightness information. Image editors can change the pixels to enhance the image in many ways. The pixels can be changed as a group, or individually, by the sophisticated algorithms within the image editors. The domain of this article primarily refers to bitmap graphics editors, which are often used to alter photographs and other raster graphics. However, vector graphics software, such as Adobe Illustrator or Inkscape, are used to create and modify vector images, which are stored as descriptions of lines, Bézier splines, and text instead of pixels. It is easier to rasterize a vector image than to vectorize a raster image; how to go about vectorizing a raster image is the focus of much research in the field of computer vision. Vector images can be modified more easily, because they contain descriptions of the shapes for easy rearrangement. They are also scalable, being rasterizable at any resolution.

Editing programs

Due to the popularity of digital cameras, image editing programs are readily available. Minimal programs, that perform such operations as rotating and cropping are often provided within the digital camera itself, while others are returned to the user on a compact disc (CD) when images are processed at a discount store. The more powerful programs contain functionality to perform a large variety of advanced image manipulations. Popular raster-based digital image editors include Adobe Photoshop, GIMP, Corel Photo-Paint, Paint Shop Pro and Paint.NET. For more, see: List of raster graphics editors.

Besides programs that mainly concentrate on editing one image at a time, such as those listed above, there exist a lot of batch image processing tools like Batch Image Processor or Batch Photo that let one resize, convert, watermark, or otherwise edit images.

Digital data compression

Many image file formats use data compression to reduce file size and save storage space. Digital compression of images may take place in the camera, or can be done in the computer with the image editor. When images are stored in JPEG format, compression has already taken place. Both cameras and computer programs allow the user to set the level of compression.

Some compression algorithms, such as those used in PNG file format, are lossless, which means no information is lost when the file is saved. The JPEG file format uses a lossy compression algorithm- The greater the compression, the more information is lost, ultimately reducing image quality or detail. JPEG uses knowledge of the way the brain and eyes perceive color to make this loss of detail less noticeable.

There is a lot of technique to edit the photos. But you must take a good picture first before you edit it to get a maximal result. The technique that I use to edit the photo just give gradation in my Landscape photography, more blur (if needed) in Portrait photography. The saturation, and picture still I used Canon Software. It make my picture still have “EXIF Data“. But, if I take a macro/micro, I never edit it. Because the original color was pure, eye catching, natural and beautiful.

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Written by Dimas A. Nugroho

November 21, 2009 at 1:30 pm

24 Responses

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  1. where I can download this is photo editing??? tnx

    lorraine

    March 22, 2010 at 10:24 am

    • I use Adobe Photoshop for editing picture and photos. But now, I never edit my picture. I use Adobe Photoshop to give watermark only. I just edit my photos with Canon Software, so all of my picture still have EXIF-data.

      Dimas A. Nugroho

      March 22, 2010 at 2:40 pm

  2. can i edit pictures using this picture editing online????

    twinkle

    April 13, 2010 at 1:01 am

  3. tangna! baboy

    taina

    May 1, 2010 at 9:22 am

  4. i’ll need to know more on photo editing

    kasa

    May 3, 2010 at 5:37 pm

  5. i need more knowledge on photo editing

    kasa

    May 3, 2010 at 5:38 pm

  6. Traditional analog image editing is known as photo retouching, using tools such as an airbrush to modify photographs, or editing illustrations with any traditional art medium. Graphic software programs, which can be broadly grouped into vector graphics editors, raster graphics editors, and 3d modelers, are the primary tools with which a user may manipulate, enhance, and transform images. Many image editing programs are also used to render or create computer art from sc.

    lori

    September 7, 2010 at 10:51 am

  7. allo ca va bien

    nounou1990

    October 25, 2010 at 4:21 pm

  8. I would appreciate some advice on how to add a watermark using Adobe Photoshop (I have CS3 Extended). At the moment I am just adding text to the image but feel a watermark would be safer.

    Poetic Beauty

    November 14, 2010 at 8:43 am

  9. asjdsjd

    mr rahul biswas

    November 18, 2010 at 4:16 pm

  10. i love u

    lilirwanda

    November 23, 2010 at 9:09 am

  11. I love u

    Aman

    November 26, 2010 at 8:04 am

  12. this is cool

    rox

    December 1, 2010 at 8:27 pm

  13. this is so good

    shiv

    December 17, 2010 at 7:22 am

  14. nice

    radwa

    March 11, 2011 at 7:12 pm

  15. nice pod weeeeeeeeew

    oxford

    March 21, 2011 at 1:28 am

  16. i want this link of the editor of pictures … but i can’t find it ….! could you guys please give me it ??

    isabella

    April 26, 2011 at 2:22 pm

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