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MAWD lesson 2.01
Understand digital raster graphics
| Term | Definition |
|---|---|
| Inches | standard unit of measurement for the United States and U.S. standard sized papers |
| Pixels | most common unit of measurement for computer screen display |
| Points | standard unit of measurement for typefaces |
| Picas | one equals 1/6 of an inch |
| Em space | current point size of the font |
| Percentage | a rate, number, or amount in each hundred |
| Resolution | measure of the amount of detail that is stored in a digital image |
| PPI | pixels per inch |
| On-screen resolution | 72 ppi |
| Print resolution | resolution that prints in DPI |
| DPI | dots per inch |
| RBG | assigns an intensity value to each pixel ranging from 0 to 255 for each of the red, green, and blue components in an image |
| CMYK | assigns a percentage value for each of the process inks |
| Aspect Ratio | the relationship of an objects 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 |
| 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 and area of an image and then allows you to paint over another area of the image with the sampled area |
| Blend Modes | change the was layers interact by determining how a layer will blend with the layers before it |
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