APCS4 - General Info

15 terms by dwebb_98 

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Resolution

Refers to the number of small squares (pixels) that describe an image and establish its detail

Crop tool

Can be used to straighten and cut out parts of an image

Crop Marquee

Once drawn, this can be changed using the sizing handles, it can be rotated as well

Selections

Used to isolate parts of an image to change just those parts without affecting anything else.

Selection Area

Only part of an image that would be affected

Selections based on

size, shape, and color of the item you want to select

Copy selected area

by holding down Option and dragging out duplicate

Elliptical Marquee

selects elliptical or circular objects

Rectangular Marquee

selects square or rectangular objects

Lasso

Can be used to draw freehand selection areas

Polygonal Lasso

Selects based on straight-line segments of an object

Magnetic Lasso

Combination of regular and polygonal lasso -- can detect boundaries between selection area and its surroundings.

Quick Selection

Selects by sensing edges around the object being selected

Magic Wand

Selects based on similarity in colors

Tolerance

On Magic Wand -- controls # of colors selected -- the higher the number, the more colors selected.

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