[英]How can I write this command line command in Perl using the ImageMagick API?
How can I do the same as the following command line command in Perl using the ImageMagick API? 如何使用ImageMagick API与Perl中的以下命令行命令相同?
convert scotland.jpg[1x1+0+0] -depth 8 txt:
The result should look similar to this: 结果应类似于以下内容:
# ImageMagick pixel enumeration: 1,1,255,rgb
0,0: ( 48, 50, 47) #30322F rgb(48,50,47)
I found an explanation in Perl & Image::Magick, getting color values by pixel and lifted/changed the code. 我在Perl&Image :: Magick中找到了解释, 按像素获取颜色值并提升/更改了代码。 This works for me: 这对我有用:
use strict; use warnings;
use Data::Dumper;
use Image::Magick;
my $img = Image::Magick->new;
$img->Read("foo.jpg");
my @pixel = $img->GetPixels(
width => 1,
height => 1,
x => 0,
y => 0,
map => "RGB"
);
print Dumper \@pixel;
As said by brian in his answer to the linked question, you may need to reduce the depth. 正如布赖恩在回答链接问题时所说的那样,您可能需要减少深度。 See the other question for details. 有关详细信息,请参见另一个问题。
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