SA Flashcards
Heuristics
: process of finding a satisfactory solution where finding an optimal or exact solution is impractical or impossib
How are BW images encoded?
0 is black, 1 is white
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How are color images encoded?
RGB is a color model that uses varying intensities of (R)ed, (G)reen, and (B)lue light to reproduce nearly any color
- RGB values range from 0-255, with 255 being the highest intensity of that color (ex. 255, 0, 0 is pure red)
- RGB typically uses a total of 24 bits (3 bytes) with 8 bits each for Red, Green, and Bl
What is metadata
data that describes other data - in the case of images, metadata would include the width and height of the image
Pixels
“picture element” - the most fundamental element of a digital image; a dot or square that contains a single point of color for a larger image
Lossy
dta compression algorithm that does not allow the original data to be creconstructed, thus saving space
lossless
data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data
Binary
values of 1s and 0s, can be used to make images
Hexadecimal
values stored in letters and 1s and 0s
RGB colors
red green blue values from 0 to 255 that can be combined to make different colors
raster vs vector
raster images made from pixels, while vector images made from paths between points to form lines
raster vs vector
raster images are made from pixels, vector images are made from connecting paths of lines
