Various Consequences

The real world is noisy, and the differencing operations of edge detection tend to magnify that noise. We can apply some statistical method...

In image processing the discrete difference operators to calculate gradients and second derivatives are called "masks". They are o...

I can't really decide on the best way to treat the different channels (red, green, blue) in a color image when doing edge detection. I...

That's the Python Imaging Library . I demonstrated a couple of edge detection techniques ( gradient and laplacian ) using the PIL to ...

In Poor Man's ADC Revisit , I demonstrated gradient based edge detection using Python's Imaging Library to read in a jpg. You can a...

I wrote a bit ago about using a webcam as an analog-to-digital converter . The really quick hack I put together used Octave's built-in...