Topic: Image Editing Software


Image editing software is the method by which people create or alter images. This software can be one simple program or a collection of programs. Some programs have digital video and animation capabilities while others show the very basic functions of simple sketching. The more complex a program get, the more expensive it becomes. "Microsoft Paint" is included at no addition cost with the OS while Adobe Photoshop is about a thousand dollars. Fortunately there are some programs that offered as open source software like "GIMP." GIMP shows many similarities and capabilities as Photoshop, but does not have the same potential. However is does contain many common resources used for image editing. And the best part about GIMP is that it's free.


Microsoft Paint is probably the most basic image editing program but still demonstrates the same principles as more advanced programs.
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Adobe Photoshop demonstrates more complex functions and is more commonly used for altering graphics.
external image cs4_standardscreen.jpg

GIMP is similar to Photoshop with some of the more complex functions, but is a free download for computer users everywhere.

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Other Programs:

  • Adobe Fireworks
  • Corel Draw
  • iPhoto
  • Microsoft Office: Picture Manager
  • Picasa
  • Color It

Here's an example of an image after being edited through Photoshop.
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Web Resources:
YouTube Photoshop Tutorial


Anti Alias: Neighboring pixels are blended together to reduce an image appearing to be pixilated; the "stair stepping" effect.
Bit-mapped image: An image that is made up of pixels or represented with dots; also referred to as a "raster image."
CMYK: Cyan, magenta, yellow, and black; make up the subtractive color system used in printing.
Cropping: A tool for deleting excess or unwanted material from an image; usually material is discarded on the borders.
DPI: Dots per inch; measurement for spatial resolution of images.
GIF: Graphic interchange format; a bitmap file format popular for graphics on the Web. It has a color palette of 256 colors and can also be animated.
Grey Scale: Different shades of grey between black and white.
JPEG: Format named after the Joint Photographic Experts Group. Compresses images while sacrificing detail.
Lossless Compression: Reduces file size without losing any data; when uncompressed the image is the same as the original.
Lossy Compression: Reduces file size by removing data from an image. After compression the image may look like the original although it has lost data.
Megapixel: one million pixels; is used to refer to the resolution of a digital camera.
Pixel: Smallest element of a digital image.
PNG: Portable Network Graphics; open source image format that supports 24 bit color, transparency, and lossless compression.
Resize: Changing the resolution of an image by increasing or decreasing the number of pixels.
Resolution: Amount of pixels per linear unit; other measures include ppi (pixels per inch) or dpi (dots per inch).
RGB: Red, green, blue; three colors of light that make all the colors.
Sharpening: Tool for exaggerating edges for better definition.
TIFF: Tagged Image File Format; widely used format for higher quality images.
Vector Image: An image that is made up of individual elements; each element has its own attributes that may be edited. Vector images tend to have smaller file sizes than raster images.
Watermark: a common way of identifying images and protecting them from unauthorized use online.
Zoom: A tool used to view an image in greater or smaller proportions.