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# Summed Area Table - Viola Jones Object Detection

Unsolved
###### Computer Vision

Difficulty: 6 | Problem written by mesakarghm
##### Problem reported in interviews at

The value at any point (x,y) in the summed area table is the sum of all the pixels above and to the left of (x,y).

$$I(x,y) = \sum_{x',y'<= x,y } i(x',y')$$

where i(x,y) is the value of the pixel at (x,y).

For a 2D input array, calculate and return the value of the summed area table.

##### Sample Input:
<class 'numpy.ndarray'>
img: [[ 17 24 15 58 15] [ 23 55 47 114 216] [ 4 6 13 220 22] [ 10 12 19 21 3] [ 11 18 25 12 19]]

##### Expected Output:
<class 'numpy.ndarray'>
[[ 17 41 56 114 129] [ 40 119 181 353 584] [ 44 129 204 596 849] [ 54 151 245 658 914] [ 65 180 299 724 999]]

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sapna_sharma • 3 weeks, 3 days ago

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1 out of 4 test case is not passing. Please make provision to show the test case input for which the test is not passing.

The result for the sample test case is correct for my code.