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Algorithm to detect corners of paper sheet in photo
...cont: cv2.contourArea(cont) > 10000, contours)
# simplify contours down to polygons
rects = []
for cont in contours:
rect = cv2.approxPolyDP(cont, 40, True).copy().reshape(-1, 2)
rects.append(rect)
# that's basically it
cv2.drawContours(orig, rects,-1,(0,255,...
Non-recursive depth first search algorithm
... if node.first_child:
node = node.first_child # walk down
else:
while not node.next_sibling:
if node is root:
return
node = node.parent # walk up ...
node = node.next_sibling # ... and...
Eclipse - java.lang.ClassNotFoundException
... is an eclipse project - maven - git issue. That does not really narrow it down but wiping all the metadata folders (.project, .whatever...), deleting the project and reimporting only as a maven project worked for me. I also found something didn't know eclipse-junit could do: highlighting test metho...
how to create a Java Date object of midnight today and midnight tomorrow?
...n the Javadoc
For example, truncating with the MINUTES unit will round down to the nearest minute, setting the seconds and nanoseconds to zero.
Hope it helps.
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Is XSLT worth it? [closed]
...parent issues (debugging, string manipulation, programming structures) are down to a flawed understanding of the tool.
Obviously, I strongly believe it is "worth it".
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How can I copy the output of a command directly into my clipboard?
...lways wanted to do this and found a nice and easy way of doing it. I wrote down the complete procedure just in case anyone else needs it.
First install a 16 kB program called xclip:
sudo apt-get install xclip
You can then pipe the output into xclip to be copied into the clipboard:
cat file | x...
What is the most useful script you've written for everyday life? [closed]
...in to the WS as a regular user (no root allowed, all external ports locked down), print a document with 24blank lines - which rotated the paper feed knob and the ruler pressed over the reset on the super special hardware.
sh...
Could someone explain the pros of deleting (or keeping) unused code?
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I'd be very interested in your reasons for the down vote just now.
– suspectus
Apr 30 '14 at 11:24
1
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support FragmentPagerAdapter holds reference to old fragments
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i marrowed this down to being a problem with the fragmentManager and this issue... code.google.com/p/android/issues/detail?id=19211. I still have no clue how to solve this
– Maurycy
Mar 16 '12 at 18:10
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Postgres: SQL to list table foreign keys
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Ollyc's answer is good as it is not Postgres-specific, however, it breaks down when the foreign key references more than one column. The following query works for arbitrary number of columns but it relies heavily on Postgres extensions:
select
att2.attname as "child_column",
cl.relname a...