2.01 UNDERSTAND DIGITAL RASTER GRAPHICS

Image Editing

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.

Cropping

Cutting out part of an imageOriginal image retains same file sizeCut image can be saved as new object

Student Created

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

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.

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.

Layer Styles

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

Layer Masks

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

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 blue, gradually becoming white Red fading to orange.

Adjustment Layers

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.

Examples of use: A weaving pattern Liquefying

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

Blend Modes

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