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location Munich, Germany
age 36
visits member for 2 years, 7 months
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I work at a small mechanical engineering company, where I develop software and image processing algorithms for camera-based inspection machines.


May
19
revised Rebuild a polygon so it doesn't self intersect
deleted 21 characters in body
May
19
answered Rebuild a polygon so it doesn't self intersect
Apr
28
comment Generating x,y coordinates for an edge detection
@s.s.o: Oops, you're right; I didn't realize there was a shadow. On the other hand, I just answered this question because I didn't notice it was months old (and probably abandoned by the OP). Adding "image processing cleanup code" that will only work for this single image anyway seems kind of pointless now.
Apr
27
awarded  Necromancer
Apr
27
answered Generating x,y coordinates for an edge detection
Apr
16
awarded  Nice Answer
Apr
14
comment Machine precision infinity
@chuy: $MaxMachineNumber is the largest finite number the machine's native floating point type can represent. But IEEE floating point numbers can also represent plus and minus infinity. I guess he means those.
Apr
12
comment Is it possible to get AltGr key to work in Math.exe?
Happens on my PC too, only in math.exe, not in other console processes. It seems to ignore num-block keys, too, even if num-lock is on. I'd say math.exe is completely unusable (interactively) with a non-us keyboard. Dumb question: Why use the console interface in the first place? Why not use the more comfortable notepad interface?
Apr
11
answered Programming paradigm change
Apr
10
comment Fitting piecewise functions
I think NonlinearModelFit works my minimizing some cost function (e.g. total squared error), but the cost function can't be evaluated if your piecewise function doesn't return a value for some values of x. Have you tried using something like {(a+b)/2,A<x<B} as a fallback? Alternatively, you could come up with your own cost function and just optimize that.
Apr
9
comment Line Intensity Profile From Image
@VitaliyKaurov: I always thought an intensity profile was the sampled intensity values along a path (in this case, a line). Maybe I misunderstood the term. What would be your definition?
Apr
9
answered Line Intensity Profile From Image
Apr
7
awarded  Nice Answer
Mar
28
answered Importation multiple dcm images
Mar
18
awarded  Notable Question
Mar
12
awarded  Good Question
Mar
7
awarded  Guru
Feb
26
comment Correctly set up FindMinimum
I can't try without a sample image, so this is just a guess: Did you try restricting the scfac parameter to ?NumericQ (see here: mathematica.stackexchange.com/questions/18393/…). Also, you should probably Round the size parameter to ImageResize
Feb
20
comment detecting the radius of an incomplete circle
@John: I think AreaRadiusCoverage (for each connected component) takes a disc centered at the centroid, with the same area as the component, and measures the overlap between that disc and the component. For a ring, where all pixels are far from the centroid, this should always be small. Other suitable measurements might be the ConvexCoverage, or maybe something like (MaxCentroidDistance-MinCentroidDistance)/MeanCentroidDistance
Feb
20
revised detecting the radius of an incomplete circle
deleted 1 characters in body