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location Munich, Germany
age 36
visits member for 2 years, 10 months
seen 1 hour ago

I work at a small mechanical engineering company, where I develop software and image processing algorithms for camera-based inspection machines.


Nov
18
comment What does it mean: “Assuming a matrix | Use a list of lists instead”?
In Mathematica, a matrix is just a list of lists, so don't worry. This just means that the suggestions bar offers suggestions for matrices. If you clicked on "list of lists", you'd see different suggestions.
Nov
13
comment More on performance of Sum[]
I would guess that the resolution of AbsoluteTiming is system dependent. For example, on my Win 7 PC, I never get a value between 0 and 0.0005, so that's probably the resolution of some clock that AbsoluteTiming uses. If you compare only timings large compared to the clock resolution (e.g. t > 0.01), the graphs do look very similar.
Nov
13
comment Finding a specific number of eigenvalues in Mathematica
If m is a square matrix, then Eigenvalues[m,n] gives the first n eigenvalues.
Nov
13
comment FindPeaks does not smooth noise on peak?
MaxDetect[data, 0.01] where 0.01 is a "noise threshold" is also worth a try - the resulting vector is 1 for (possibly extended) maxima, and 0 elsewhere.
Nov
6
comment Best fit equation from a scanned image
Related: mathematica.stackexchange.com/questions/3831/…
Nov
4
awarded  Good Question
Oct
29
comment Usage of @ symbol in Mathematica
Have you seen this? mathematica.stackexchange.com/questions/18393/…
Oct
25
comment how to speedup subpixel registration
The simplest way is to replace (# + {x, y}) & with TranslationTransform[{x, y}] - that makes it about 10x faster on my PC (I'm guessing ImageTransformation is optimized for TransformationFunctions). Replacing NMinimize with FindMinimum makes it 10x faster, again. You can probably make it faster if you carefully think about how ImageTransformation interpolates between pixels (there might even be a closed form solution?), but that's a lot more work for 0.2 seconds.
Oct
24
awarded  Enlightened
Oct
23
awarded  Nice Answer
Oct
23
answered Intersecting parabolas in an image
Oct
20
answered Nothing happens when I click the mouse clicked on my graphics
Oct
16
asked How does MapThread work with Associations
Oct
16
awarded  Good Question
Oct
11
answered Counting the number of instances where items at the same position in two matrices are equal?
Sep
29
comment Curve fit based on minimal data
According to the wikipedia link, the polar form is just $r=b+a\cos\theta$ - so maybe you could convert your points to polar coordinates and use Fit?
Sep
26
awarded  Nice Answer
Sep
24
awarded  Autobiographer
Sep
22
comment Is there a CDF Player for Mathematica 10?
But you won't tell us where to find it?
Sep
22
asked Is there a CDF Player for Mathematica 10?