Using the concept of Transpose Convolution, fill in the values of X, Y and Z below.(padding = 1, stride = 2)Input: 2x2 1234Filter: 3x3111000-1-1-1Result: 6x6000XY4220000-3Z-4-41 point
Question
Using the concept of Transpose Convolution, fill in the values of X, Y and Z below.(padding = 1, stride = 2)Input: 2x2 1234Filter: 3x3111000-1-1-1Result: 6x6000XY4220000-3Z-4-41 point
Solution
The Transpose Convolution, also known as the fractionally strided convolution or deconvolution, is a process that aims to 'reverse' the effect of a normal convolution. It is used in applications such as generating high-resolution images from low-resolution ones.
Given the input, filter, padding, and stride values, we can calculate the values of X, Y, and Z in the result matrix.
Here's how:
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First, we apply zero-padding of 1 to the input matrix. This transforms our 2x2 input into a 4x4 matrix:
0000 0120 0340 0000
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Next, we apply the filter to the padded input with a stride of 2. This means we move the filter two steps each time.
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The filter is applied to the top left 3x3 section of the padded input first, resulting in the value for X:
(01 + 01 + 00) + (01 + 11 + 20) + (0*-1 + 0*-1 + 0*-1) = 1
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The filter is then applied to the 3x3 section starting at the third row and third column of the padded input, resulting in the value for Y:
(21 + 01 + 00) + (31 + 41 + 00) + (0*-1 + 0*-1 + 0*-1) = 9
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Finally, the filter is applied to the 3x3 section starting at the third row and first column of the padded input, resulting in the value for Z:
(01 + 21 + 00) + (01 + 31 + 40) + (0*-1 + 0*-1 + 0*-1) = 5
So, X = 1, Y = 9, and Z = 5.
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