Re^3: 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().

Comment on Re^3: Using Imager 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"; } } <>;` [download]	[reply] [d/l]

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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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