** Junior Colloquium, Thursday January 19 2012 **
The First Junior Colloquium of this semester will be given by
Dr. Amy F. Szczepanski, University of Tennessee, Electrical
Engineering and Computer Science. The lecture will take place
at 3:35 pm in the Fourth Floor Colloquium Room, Ayres Hall.
The customary pizza will be served at 3:15.
Junior Colloquium
Ayres Hall 4th Floor Colloquium Room
Thursday January 19, 3:35 pm - 4:25 pm
Dr. Amy F. Szczepanski, University of Tennessee
Electrical Engineering and Computer Science
Understanding the Encoding of JPEG Images
Abstract:
JPEG encoding allows large images to be represented as fairly
small files.
This compression is achieved through clever use of algorithms that take
advantage of the fact that pixel intensity and color both tend to change
fairly gradually throughout an image.
We'll see how this property, together with well-chosen matrices
and smart ways of representing long strings of zeros, allows the JPEG
format to encode images efficiently. This talk should be accessible to
anyone who is comfortable with matrix multiplication.
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