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How can I sharpen an image in OpenCV?
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163
One general procedure is laid out in the Wikipedia article on unsharp masking:
You use a Gauss...
Convert light frequency to RGB?
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answered Sep 24 '09 at 15:47
Stephen MesaStephen Mesa
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Clojure 1.2.1/1.3/1.4 'proxy generated in Grails 2.0.0 runtime fails. 1.2.0 is fine
... working on extending the Grails Clojure plugin in Grails 2.0.0 (and 2.1.0-SNAPSHOT) and I wanted to update it to Clojure 1.3.0 and add clojure.tools.logging .
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How to access the last value in a vector?
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11 Answers
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Speed up the loop operation in R
...on). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the runtime.
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Why does changing 0.1f to 0 slow down performance by 10x?
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1627
Welcome to the world of denormalized floating-point! They can wreak havoc on performance!!!
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How to increase font size in a plot in R?
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145
You want something like the cex=1.5 argument to scale fonts 150 percent. But do see help(par) ...
How do you detect where two line segments intersect? [closed]
...first line segment (p + t r):
t0 = (q − p) · r / (r · r)
t1 = (q + s − p) · r / (r · r) = t0 + s · r / (r · r)
If the interval between t0 and t1 intersects the interval [0, 1] then the line segments are collinear and overlapping; otherwise they are collinear and disj...