DDA - 6. Vectors and Bitmaps (Images)
Common bitmap formats display in...
... Internet browsers easily.
Common bitmap formats include...
... JPEG, GIF, and PNG.
Another word for pixelation is...
... aliasing.
JPEG, GIF, PNG are commonly used...
... bitmap (raster) formats.
How is the resolution of an image measured by...?
... by counting the number of pixels in that image...
Bitmap image size is ...
... is much bigger than vector images' size.
Vector image size is...
... is much smaller than bitmap size.
Raster graphics (bitmaps) are made of...
... pixels.
The advantage of bitmap images are that...
... they have a near-unlimited range of colors and can be photo-realistic.
Anti-Aliasing is a method of reducing the prominence of this effect by ...
... transforming pixels on these edges to make them appear stronger.
Bitmap graphics are easily used in many software applications and converted to different...
... vectors.
Vector graphics are made of...
... vectors.
"Stair-stepped edges refer to...
... when zooming in on lines in a bitmap.
Jagged edges of bitmaps mean that...
... you might have zoomed in too much on that image or the image has low resolution.
You can see pixels in an image when you...
... zoom in on the image.
The regular lasso tool...
...draws shapes with freehand lines.
The polygonal lasso draws...
...polygon selections with straight lines.
A pixel is the...
A pixel is the smallest physical point of color in a bitmap graphic.
A low resolution images is...
An image with an extreme level of blurriness/unclear areas..
A high resolution image is...
An image with an extreme level of sharpness/clarity.
What are the disadvantages of bitmap images?
Bitmap graphics are resolution-dependent and have bigger file sizes than vector graphics. Performing a transformation on a bitmap graphic, such as making it much larger or rotating it, may degrade or distort the quality of the image. They are also are typically not easily converted into vector graphics without a change in appearance.
Raster images are also called...
Bitmaps
How can you change the image workplace in Illustrator or Photoshop?
By changing the canvas size.
What does "resolution-dependent" mean?
It means that the image designed for a specific print or viewing size. If you blow it up to be bigger, then it will be pixelated and will lose detail.
Pixelation means...
Pixelation means that the image is not clear. It's washed out or blurry, which means that you can see some "jagged" edges.
What is true about "selection"?
There are many ways to select groups of pixels, it does nothing to pixels on its own, it allows changes to be made to those pixels, and it allows transformations or adjustments, without changing the non-selected pixels.
Adobe Photoshop is used for...
creating and editing bitmap (pixel-based) images.
Adobe Illustrator is used for...
creating and editing vector (vector-based) images.
The ________ tool is used to quickly change the size or remove portions of a bitmap image by creating new boundaries for the image and removing the pixels that are outside of these boundaries.
crop
The ________ tool lets you draw a shape to select pixels
lasso
The ________ tool selects all pixels of a color that are touching each other, the strength of which can be controlled by tolerance.
magic wand
The ________ tool tries to sense the edge of groups of pixels, that may be different by color.
magnetic lasso
The ________ tool allows you to select a group of pixels within a shape such as a rectangle or circle
marquee
The ________ tool tries to understand what you are trying to select based on the content of your image.
quick selection
Bitmaps are also called ...
raster images
You can add or subtract to any selection by making new selections while holding the ________ keys.
shift or alt
