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Metadata
: a set of data that gives other information about data (describes how and when and by whom a particular set of data was collected, and how data is formatted)
Pixel
: short for a picture element, a single point in a graphic image.
Lossy Compression
: As you compress the data, it loses data non- recoverable.
Lossless Compression
: No data lost, it can be compressed and decompressed back to the origin.
Hex Code
uses RGB values in red, blue, green.
Pixel density
refers to how many pixels have been squeezed into a physical amount of space.
binary digits
Hexadecimal: base- 16; numbers are 0- 9 and then use the letters A- F. is a convenient way to express binary numbers in modern computers in which a byte is almost always defined as containing eight .
File format
: the layout of a file in terms of how the data within the file is organized.
Hexadecimal
base-16; numbers are 0-9 and then use the letters A-F. is a convenient way to express binary numbers in modern computers in which a byte is almost always defined as containing eight binary digits
Lossy Compression
As you compress the data, it loses data non-recoverable
Lossless Compression
No data lost, it can be compressed and decompressed back to the origin
File format
the layout of a file in terms of how the data within the file is organized
pixel
short for a picture element, a single point in a graphic image
Metadata
a set of data that gives other information about data (describes how and when and by whom a particular set of data was collected, and how data is formatted)
data
distinct information that is formatted in a special way
Audio file formats
MP3(lossy), WAV (lossless), OGG (lossy)
Text file formats
BAT (lossless), DOC (lossless)
Image file formats
JPEG (lossy), GIF(lossless)
Audio and Video file formats
MP4(lossy), MOV (lossy), WebM (lossy video compressor)