Tuesday, November 2, 2021

How High is a Peak? The watershed algorithm

Mountain peaks, river basins, watersheds, and image segmentation, oh my! The watershed algorithm:
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Saturday, August 21, 2021

How far is it from everywhere to somewhere?

How far is it from everywhere to somewhere?  How would you compute the answer?

Prepared for #SoME1
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Monday, June 14, 2021

Connected Components 1 - The naïve approach

Getting started on connected-components segmentation, starting from assuming very little in the way of prior knowledge:


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Monday, May 24, 2021

Fast Discrete Radon Transformation

I didn't think this one would take as long as it did to produce, but I didn't think the explanation would demand as long a video as it did. 

Finding straight lines with the Fast Discrete Radon Transformation.


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Monday, May 10, 2021

The card reader and the Hough transform

We use the Hough Transform to find the straight lines in the image and finish getting the bits from the punched card.
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Monday, May 3, 2021

Image preparation for the card reader

Ths stuff in this video is the “bread and butter&drquo; of image processing. Experienced computer visionaries will have heard it all before.
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Monday, April 19, 2021

Image analysis and the Organ, part 1: Intro to k-means segmentation

New thread: using a document scanner to read an old stack of IBM cards. (Re-do of a ten-year-old project, but with videos discussing the algorithms.)

This week: introduction to k-means segmentation.


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