Median filter: Difference between revisions
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(Updated and improved D entry (but currently it's grayscale only)) |
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median = im.filter(ImageFilter.MedianFilter(3)) |
median = im.filter(ImageFilter.MedianFilter(3)) |
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median.save('image2.ppm')</lang> |
median.save('image2.ppm')</lang> |
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=={{header|Racket}}== |
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<lang racket> |
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#lang racket |
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(require images/flomap math) |
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(define lena <<paste image of Lena here>> ) |
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(define bm (send lena get-bitmap)) |
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(define fm (bitmap->flomap bm)) |
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(flomap->bitmap |
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(build-flomap |
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4 (send bm get-width) (send bm get-height) |
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(λ (k x y) |
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(define (f x y) (flomap-ref fm k x y)) |
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(median < (list (f (- x 1) (- y 1)) |
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(f (- x 1) y) |
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(f (- x 1) (+ y 1)) |
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(f x (- y 1)) |
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(f x (+ y 1)) |
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(f (+ x 1) (- y 1)) |
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(f (+ x 1) y) |
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(f (+ x 1) (+ y 1))))))) |
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</lang> |
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=={{header|Ruby}}== |
=={{header|Ruby}}== |
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