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How can I quantify difference between two images?
...ead images as 2D arrays (convert to grayscale for simplicity)
img1 = to_grayscale(imread(file1).astype(float))
img2 = to_grayscale(imread(file2).astype(float))
# compare
n_m, n_0 = compare_images(img1, img2)
print "Manhattan norm:", n_m, "/ per pixel:", n_m/img1.size
print "Z...
Polymorphism in C++
...rtual Base& operator+=(int) = 0; };
struct X : Base
{
X(int n) : n_(n) { }
X& operator+=(int n) { n_ += n; return *this; }
int n_;
};
struct Y : Base
{
Y(double n) : n_(n) { }
Y& operator+=(int n) { n_ += n; return *this; }
double n_;
};
void f(Base& x) { x...
ERROR: Error 1005: Can't create table (errno: 121)
...
MarcMarc
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MongoDB and “joins” [duplicate]
... code : 'ABC001'".
– Vijay Sali
Apr 19 '13 at 6:11
4
@VijaySali you search for it...db.collection...
Package objects
...
Dave GriffithDave Griffith
19.8k33 gold badges5151 silver badges7474 bronze badges
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Django Admin - Disable the 'Add' action for a specific model
...odel's changelist page.
– Cerin
Jul 19 '12 at 17:27
what is MyAdmin here?
– user5319825
...
Null coalescing in powershell
...
answered May 17 '12 at 19:40
StephenDStephenD
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How to animate the change of image in an UIImageView?
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edited May 19 '16 at 10:39
MarkHim
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IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
...achine).
– Matt Hurne
Aug 17 '11 at 19:10
42
JetBrains should fix this lame bug.
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Targeting only Firefox with CSS
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edited Apr 19 '18 at 11:00
VXp
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an...