1. 2.01 Understand Digital Raster Graphics
Image Editing
2.01 Understand Digital Raster Graphics

2. Aspect Ratio
Aspect Ratio is the relationship of an object’s width to its height.
Knowledge of required aspect ratios can assure proper proportions when creating new files, cropping, or making selections.
Maintaining aspect ratio while modifying an objects size ensures the object is not distorted.
Use shift when resizing with a corner handle.
Check constrain proportions when changing the image size.

3. Cropping Cutting out part of an image
Original image retains same file size
Cut image can be saved as new object
Student Created

4. Layers Compiling multiple pictures or objects together into one image
Layers can be turned on or off
Elements can be colored, layered, and resized individually

5. Selections
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.
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.

6. Transforming
Transforming – changing a graphics size or dimensions through commands such as scaling and rotating.
Scaling – enlarging or shrinking a graphic.
Rotating – pivoting an object around its center point.
Use Sizing Launcher

7. Layer Styles
Layer Styles – One or more effects applied to a layer or layer group. Effects include shadows, stroke, glows, bevels, and overlays.

8. Layer Masks
Layer Masks – A non-destructive method which allows you to apply transparency to a specific portion of a layer with precise control.

9. Fills and Gradients
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.
Examples
Dark green, gradually becoming white
Red fading to orange.

10. Adjustment Layers
Adjustment Layers – Non-destructive layers that can be added to allow you to apply image tonal and color adjustments.

11. Filters
Used to apply special effects to an image that would be too difficult to create manually.
Examples of use:
A weaving pattern
Liquefying

12. Cloning
Cloning - samples and area of an image and then allows you to paint over another area of the image with the sampled area. Examples of use:
Remove blemishes on a model’s skin
Brush up text on a scanned image

13. Blend Modes
Blend Modes – change the way layers interact by determining how a layer will blend with the layers below it.