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Feb
7
revised Efficient Lloyd Sampling of Images
deleted 11 characters in body
Feb
7
revised Efficient Lloyd Sampling of Images
added 1045 characters in body
Feb
7
comment Efficient Lloyd Sampling of Images
@belisarius: Using image processing to approximate a Voronoi diagram is much more expensive than actually calculating a Voronoi diagram. At least in 2d, calculating a VD is about as complex as sorting all the points by their Y-coordinate.
Feb
7
revised Efficient Lloyd Sampling of Images
(added animation)
Feb
7
answered Efficient Lloyd Sampling of Images
Feb
7
accepted Is there a CDF Player for Mathematica 10? (Yes)
Jan
29
awarded  Enlightened
Jan
29
awarded  Nice Answer
Jan
26
awarded  Yearling
Jan
22
awarded  Nice Question
Jan
16
comment Plotting y'[x] vs y[x]
ParametricPlot?
Jan
14
comment How can I detect if an image is in or out of focus?
Related: stackoverflow.com/questions/7765810/…
Jan
12
comment How can FactorInteger be so slow if PrimeQ is fast?
@DanielLichtblau: reading an 8th grade math book might lead one to believe that factorizing an integer is the only way to find out if it's prime ;-)
Jan
9
comment Can I force Mathematica to use machine precision?
Thanks @OleksandrR., SystemSetSystemOptions["CatchMachineUnderflow" -> False];` works perfectly. I did look for similar questions, but didn't find the one you linked. It's obviously a duplicate. Should delete it myself or vote to close?
Jan
9
asked Can I force Mathematica to use machine precision?
Jan
9
comment Is there a way to characterize a winding object in an image?
+1. If you only want the local maxima of the distance transform, you can use SkeletonTransform. If Mean/Max are not enough, you can use ComponentMeasurements[... "Data" to get the pixel values in the distance transform/skeleton image.
Dec
24
revised Integers which are the sum of both two and three consecutive squares
added 37 characters in body
Dec
24
answered Integers which are the sum of both two and three consecutive squares
Dec
14
comment ReplaceImageValue and ReplacePixelValue extremely slow
If you just want to highlight pixels, you can use: HighlightImage[image, bin], which is very fast. In general, working with coordinates/indices seems to be much slower than using converting images to arrays with ImageData and using simple arithmetic.
Dec
8
awarded  Good Question