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Checking images for similarity with OpenCV
...lue (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different.
...
How to flatten only some dimensions of a numpy array
...
Take a look at numpy.reshape .
>>> arr = numpy.zeros((50,100,25))
>>> arr.shape
# (50, 100, 25)
>>> new_arr = arr.reshape(5000,25)
>>> new_arr.shape
# (5000, 25)
# One shape dimension can be -1.
# In this case, the value is inferred from
# the leng...
How do I plot in real-time in a while loop using matplotlib?
...os[1, ii] % c)
old_delta = delta
yield pos
def run(niter=1000, doblit=True):
"""
Display the simulation using matplotlib, optionally using blit for speed
"""
fig, ax = plt.subplots(1, 1)
ax.set_aspect('equal')
ax.set_xlim(0, 255)
ax.set_ylim(0, 255)
...
Is there any overhead to declaring a variable within a loop? (C++)
...0) does to your simple examples:
1.c:
main(){ int var; while(int i < 100) { var = 4; } }
gcc -S 1.c
1.s:
_main:
pushl %ebp
movl %esp, %ebp
subl $24, %esp
movl $0, -16(%ebp)
jmp L2
L3:
movl $4, -12(%ebp)
L2:
cmpl $99, -16(%ebp)
jle L3
lea...
What is the preferred/idiomatic way to insert into a map?
...
100
As of C++11, you have two major additional options. First, you can use insert() with list init...
How to Calculate Execution Time of a Code Snippet in C++
...N32
/* Windows */
FILETIME ft;
LARGE_INTEGER li;
/* Get the amount of 100 nano seconds intervals elapsed since January 1, 1601 (UTC) and copy it
* to a LARGE_INTEGER structure. */
GetSystemTimeAsFileTime(&ft);
li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime;
uint64 ret...
Using LIMIT within GROUP BY to get N results per group?
...02 | 8.7 | 2000 | 4 |
Note that if the rates had ties, for example:
100, 90, 90, 80, 80, 80, 70, 60, 50, 40, ...
The above query will return 6 rows:
100, 90, 90, 80, 80, 80
Change to HAVING COUNT(DISTINCT l.rate) < 5 to get 8 rows:
100, 90, 90, 80, 80, 80, 70, 60
Or change to ON t....
How to remove convexity defects in a Sudoku square?
...onentMeasurements[
lX, {"CaliperLength", "Centroid", "Mask"}, # > 100 &][[All,
2]], #[[2, 1]] &][[All, 3]];
horizontalGridLineMasks =
SortBy[ComponentMeasurements[
lY, {"CaliperLength", "Centroid", "Mask"}, # > 100 &][[All,
2]], #[[2, 2]] &][[All, 3...
How do I show a console output/window in a forms application?
...
Console.Write(output);
Console.Beep(4000, 100);
Console.Beep(2000, 100);
Console.Beep(1000, 100);
Console.Beep(8000, 100);
return;
}
}
}
I found this code here: http://www.cshar...
Select values from XML field in SQL Server 2008
...AM>, my select is select e.MessageData.value('(/BAM/Type)[1]', 'varchar(100)'). I have also tried select e.MessageData.value('(/BAM/Type/node())[1]', 'varchar(100)'), and '(//Type/node())[1]', '(./Type)[1]', and every other combination I can think of. All I ever get is NULL.
...