Bytes and Files sizes
'hello'
40 bits(5 bytes).
Represent the same information with fewer bits
what is compression?
Digital images are encoded in ______
What is binary?
Color are shown using ____ , _____, and _____
Red, Green, blue
____ is an example of lossy audio storage
MP3
How much storage does 1 ASCII text take up?
8 bits(1 byte).
class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data.
What is Lossless compression?
it is typical in a black and white image for the value 1 to represent _____ - it means turn the light on - and 0 represents black - light off.
What is white?
using ______ allows us to represent many bits with fewer characters.
What is hexadecimal?
______ compression is irreversible
Lossy
Why is a Byte 8 bits?
Early IBM used “bite” to refer to groups of 8-bits
_______ ____________is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content.
What is Lossy Compression?
The data of a black-and-white image is the list of bits that represent whether each _____ is on or off.
What is a pixel?
using ________ is not a form of data compression, it's simply a different view into the bits.
What is hexadecimal?
____ file format is lossless
ZIP
How many bytes in megabyte?
1,000,000
any approach to problem solving or self-discovery that employs a practical method that is not guaranteed to be optimal, perfect or rational, but which is nevertheless sufficient for reaching an immediate, short-term goal.
What are Heuristics
images must include _______, or data about the data
What is metadata?
RGB - typically uses ____ bits with 8 bits each for Red, Green and Blue intensities.
With lossless compression, there is no loss in _______
quality
What is the typical size of a .jpg image?
10KB to 30KB.
Example of lossy compression for images?
JPEG image
store the image as an array of individual pixels, each of which has a particular color.
what is Raster Image?
Mixing pigment and mixing colored lights (like what’s on a computer screen) lead to ]_______ results.
Different
Both lossless and lossy compression _______ the size of a file
reduce