img$1$: Image $1.$

img$2$: Image $2.$

c$1$: Center $($in image coordinate$)$ of the window in image $1.$

C$2$: Center $($in image coordinate$)$ of the window in image $2.$

R: R is the radius of the patch, $2*$R R $1$ is the window size

Returns:

NCC matching score for two input windows.

$"""$

### YOUR CODE HERE

raise NotImplementedError$("$Delete this line once you implement the function"$)$

### END YOUR CODE

return matching$\_$score

$```$

$[19]$:

# Here is the code for you to test your implementation

img$1=$ np$.$array$([[1,2,3,4],[4,5,6,8],[7,8,9,4]])$

img$2=$ np$.$array$([[1,2,1,3],[6,5,4,4],[9,8,7,3]])$

result$1=$ ncc$\_$match$($img$1,$ img$2,$ np$.$array$([1,1]),$ np$.$array$([1,1]),1)$

# should print $7\mathrm{.}69189$

print$($f$"$Result $1$: $\{$result$1\}")$

result$2=$ ncc$\_$match$($img$1,$ img$2,$ np$.$array$([2,1]),$ np$.$array$([2,1]),1)$

# should print $7\mathrm{.}61185$

print$($f$"$Result $2$: $\{$result$2\}")$

result$3=$ ncc$\_$match$($img$1,$ img$2,$ np$.$array$([1,1]),$ np$.$array$([2,1]),1)$

# should print $5\mathrm{.}63282$

print$($f$"$Result $3$: $\{$result$3\}")$