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MaWD 2.01
Understand Digital Raster Graphics
| Term | Definition |
|---|---|
| Inches | The standard unit of measure for the United States and U.S. standard sized papers. |
| Pixels | The most common unit of measurement for computer screen display. Generally represented by one dot that is illuminated on a computer screen. |
| Points | The standard unit of measurement for typefaces. |
| Picas | Often used in print design, since it is easily divisible. |
| Em Space | Refers to the size of a capital letter "M" for the current font. |
| Percentage | Defining sub elements of a web page as a percentage to the width of the entire web page. Allows for responsive layouts as the screen size changes. |
| Resolution | The measure of the amount of detail that is stored in a digital image. |
| PPI | Pixels Per Inch (the number of pixels contained in one inch). What resolution is measured in. |
| On-Screen Resolution | The degree of sharpness displayed on the computer screen. |
| Print Resolution | The degree of sharpness of a displayed or printed page. |
| DPI | (Dots Per Inch) Measures the resolution at which printers can print. |
| RGB | Assigns an intensity value to each pixel; ranging from 0 to 255 for each of the red, green, and blue components in an image. Represents on screen display. |
| CMYK | Assigns a percentage value for each of the process links. Cyan, magenta, yellow, and black. An image should be converted to this before printing. |
| Aspect Ratio | The relationship of an object's width to its height. |
| Cropping | Cutting out part of an image. |
| Layering | Compiling multiple pictures or objects together into one image. |
| Selections | Identifying a specific area of a layer or image that allows you to move or apply techniques to only that specific area on that specific layer. |
| Transforming | Changing a graphics size or dimensions through commands such as scaling and rotating. |
| Layer Styles | One or more effects applied to a layer or layer group. Effects include shadows, stroke, glows, bevels, and overlays. |
| Layer Masks | A non-destructive method which allows you to apply transparency to a specific portion of a layer with precise control. |
| Transparency | Removing the background color of a raster image making it see-through in order to allow the image to blend in with its background. |
| Fill | Putting a color, gradient, pattern, or texture into an object or area. |
| Gradient | Filling an object with a smooth transition from one color to another. |
| Adjustment Layers | Non-destructive layers that can be added to allow you to apply image tonal and color adjustments. |
| Filters | Used to apply special effects to an image that would be too difficult to create manually. |
| Clone Stamp | Samples an area of an image and then allows you to paint over another are of the image with the sampled area. |
| Blend Modes | Change the way layers interact by determining how a layer will blend with the layer below it. |
Created by:
JoeStellman
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