11 lines
302 B
Text
11 lines
302 B
Text
NB. pad the first n dimensions of an array with zeros
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NB. (increasing all dimensions by 1 less than the kernel size)
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pad=: adverb define
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adj1=: <.m%2
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adj2=: m-1
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(-@(adj2 + ]) {. (adj1 + ]) {. [) (#m) {. $
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)
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kernel_filter=: adverb define
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[: ,/"(-#$m) ($m) +/@(,/^:(_1+#$m))@:*&m;._3 ($m)pad
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)
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