Given an input image of 128x128, and output 29x29. What is the size of the area of the input that is middle...












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Given an input image of 128x128, after putting it through a convolutional neural network the output is 29x29. What is the size of the area (in pixels) of the input that correspond to the middle pixel in the output?





I was thinking it had to do with 128/29 = 4.4. Each pixel in the output corresponds to 4 pixels in the input but that doesn't get me near the right answer.



Thank you!










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  • $begingroup$
    You need to square that. How many pixels are in the input? How many in the output?
    $endgroup$
    – saulspatz
    Jan 16 at 16:02










  • $begingroup$
    the input image 128x128
    $endgroup$
    – RonaldB
    Jan 16 at 16:22










  • $begingroup$
    That's not what I meant. There are $128^2$ pixels in the input and $29^2$ in the output. Those are the numbers you need to be concerned with.
    $endgroup$
    – saulspatz
    Jan 16 at 20:08
















0












$begingroup$




Given an input image of 128x128, after putting it through a convolutional neural network the output is 29x29. What is the size of the area (in pixels) of the input that correspond to the middle pixel in the output?





I was thinking it had to do with 128/29 = 4.4. Each pixel in the output corresponds to 4 pixels in the input but that doesn't get me near the right answer.



Thank you!










share|cite|improve this question









$endgroup$












  • $begingroup$
    You need to square that. How many pixels are in the input? How many in the output?
    $endgroup$
    – saulspatz
    Jan 16 at 16:02










  • $begingroup$
    the input image 128x128
    $endgroup$
    – RonaldB
    Jan 16 at 16:22










  • $begingroup$
    That's not what I meant. There are $128^2$ pixels in the input and $29^2$ in the output. Those are the numbers you need to be concerned with.
    $endgroup$
    – saulspatz
    Jan 16 at 20:08














0












0








0





$begingroup$




Given an input image of 128x128, after putting it through a convolutional neural network the output is 29x29. What is the size of the area (in pixels) of the input that correspond to the middle pixel in the output?





I was thinking it had to do with 128/29 = 4.4. Each pixel in the output corresponds to 4 pixels in the input but that doesn't get me near the right answer.



Thank you!










share|cite|improve this question









$endgroup$






Given an input image of 128x128, after putting it through a convolutional neural network the output is 29x29. What is the size of the area (in pixels) of the input that correspond to the middle pixel in the output?





I was thinking it had to do with 128/29 = 4.4. Each pixel in the output corresponds to 4 pixels in the input but that doesn't get me near the right answer.



Thank you!







convolution machine-learning neural-networks






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 16 at 15:57









RonaldBRonaldB

868514




868514












  • $begingroup$
    You need to square that. How many pixels are in the input? How many in the output?
    $endgroup$
    – saulspatz
    Jan 16 at 16:02










  • $begingroup$
    the input image 128x128
    $endgroup$
    – RonaldB
    Jan 16 at 16:22










  • $begingroup$
    That's not what I meant. There are $128^2$ pixels in the input and $29^2$ in the output. Those are the numbers you need to be concerned with.
    $endgroup$
    – saulspatz
    Jan 16 at 20:08


















  • $begingroup$
    You need to square that. How many pixels are in the input? How many in the output?
    $endgroup$
    – saulspatz
    Jan 16 at 16:02










  • $begingroup$
    the input image 128x128
    $endgroup$
    – RonaldB
    Jan 16 at 16:22










  • $begingroup$
    That's not what I meant. There are $128^2$ pixels in the input and $29^2$ in the output. Those are the numbers you need to be concerned with.
    $endgroup$
    – saulspatz
    Jan 16 at 20:08
















$begingroup$
You need to square that. How many pixels are in the input? How many in the output?
$endgroup$
– saulspatz
Jan 16 at 16:02




$begingroup$
You need to square that. How many pixels are in the input? How many in the output?
$endgroup$
– saulspatz
Jan 16 at 16:02












$begingroup$
the input image 128x128
$endgroup$
– RonaldB
Jan 16 at 16:22




$begingroup$
the input image 128x128
$endgroup$
– RonaldB
Jan 16 at 16:22












$begingroup$
That's not what I meant. There are $128^2$ pixels in the input and $29^2$ in the output. Those are the numbers you need to be concerned with.
$endgroup$
– saulspatz
Jan 16 at 20:08




$begingroup$
That's not what I meant. There are $128^2$ pixels in the input and $29^2$ in the output. Those are the numbers you need to be concerned with.
$endgroup$
– saulspatz
Jan 16 at 20:08










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