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Re^3: Using Imager getpixel

by tonyc (Friar)
on Jan 03, 2012 at 04:42 UTC ( [id://945999]=note: print w/replies, xml ) Need Help??

in reply to Re^2: Using Imager getpixel
in thread Using Imager getpixel

I'll improve it, both the handling of supplying a scalar and ref in x, y and diagnostics for different array lengths.

If you can work row-by-row instead of column-by-column, you might want to consider using getscanline() or getsamples() instead of getpixel().

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Re^4: Using Imager getpixel
by Anonymous Monk on Sep 22, 2014 at 17:16 UTC
    my $image_file = "a.bmp"; my $img = Imager->new(file => $image_file) or die Imager->errstr; my @color = 0; $szerokosc = $img->getwidth(); $wysokosc = $img->getheight(); print"wymiar $szerokosc, $wysokosc\n"; for($x=0;$x<=$szerokosc - 1;$x++){ for($y=0;$y<=$wysokosc - 1;$y++){ my $color = $img->getpixel( x => $x, y => $y ); my ( $r, $g, $b, $a ) = $color->rgba(); print " shade = $r, $g, $b\n"; } } <>;

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