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Algorithm to detect corners of paper sheet in photo
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# these constants are carefully picked
MORPH = 9
CANNY = 84
HOUGH = 25
img = cv2.cvtColor(orig, cv2.COLOR_BGR2GRAY)
cv2.GaussianBlur(img, (3,3), 0, img)
# this is to recognize white on white
kernel = cv2.getStructuringElement(cv2.MORPH_RECT,(MORPH,MORPH))
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Why can't I use switch statement on a String?
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84
An if-elseif-elseif-elseif-else might be faster, but I'd take the cleaner code 99 times times out of 100. Strings, being immutable, cache t...
Switch statement: must default be the last case?
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84
The C99 standard is not explicit about this, but taking all facts together, it is perfectly val...
Case in Select Statement
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I think these could be helpful for you .
Using a SELECT statement with a simple CASE expressio...
Persistence unit as RESOURCE_LOCAL or JTA?
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84
As an addition to other answers
Here is an excerpt from the extremely useful article (publishe...
Function passed as template argument
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AraKAraK
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What is the cleanest way to disable CSS transition effects temporarily?
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Mark AmeryMark Amery
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SQL select only rows with max value on a column [duplicate]
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84
Yet another solution is to use a correlated subquery:
select yt.id, yt.rev, yt.contents
fr...
fatal: Not a valid object name: 'master'
...uld literally not have a master branch at all.
– Thor84no
Aug 14 at 13:56
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show 2 more comments
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Declaring an enum within a class
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84
Nowadays - using C++11 - you can use enum class for this:
enum class Color { RED, BLUE, WHITE ...