Continuous Signal

Analog

Infinite Accuracy and Infinite Measurements

Discrete Signal

Digital

Limited Accuracy and Limited Measurements

From Analog...

...to Digital

Distortions

Sampling Limitations

Noise

any signal can be decomposed into harmonic signal components

complex

with circular frequency

many different waves combined

any signal can be decomposed into harmonic signal components

Frequency in images ~ level of detail

0

0

low pass filter

high pass filter

usually high frequency noise

60 Hz noise: electric humming around transformers

Electrocardiogram

visualizes electricity that flows through the heart

12-lead ECG

Richard E. Gregg

Principal Scientist

Mike Nakagawa

Research Engineer

2/8

Healthy ECG

Heart Attack

Assignment 1

coming soon

Quiz 1

in Blackboard!

due 2/15

due 2/5

Intro to Research

How to read a paper

How to write a paper

+ 9 Meetings

CS480 Lecture 05

By Daniel Haehn

CS480 Lecture 05

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

  • 188

More from Daniel Haehn