Assignment 1 is graded.

And Quiz 2!!

Assignment 2

Due 3/1 !

1D Signals

?

[104, 104, 104, 103, 103, 102, 101, 101, 100, 100, 99, 99, 98, 98, 98, 99, 99, 100, 100]

How to represent the data?

2D Array!

Pixel

width

height

width x height

Dimensions

15 x 15

height x width ?

Shape /

g

0: minimum

     ....

255: maximum

grayscale

Frequency in images ~ level of detail

0

0

low pass filter

high pass filter

Low Frequency

High Frequency

Low Frequency

High Frequency

Edges!

Pixel

r    g    b    

0: minimum

     ....

255: maximum

red

green

blue

All image formats (PNG, JPEG, BMP...)

3 channels

r

g

b

b

r

r    g    b    

0: minimum

     ....

255: maximum

red

green

blue

0: minimum

     ....

1: maximum

r    g    b    a

alpha

0: fully transparent

     ....

255: fully opaque

0: minimum

     ....

255: maximum

red

green

blue

CS480 Lecture 12

By Daniel Haehn

CS480 Lecture 12

Slides for CS80 Biomedical Signal and Image Processing at UMass Boston. See https://cs480.org!

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