Re: Can't call method "Convolve" on unblessed reference at gifaninmation.pl line 47.

>
> #!/usr/local/bin/perl
> use Image::Magick;
> use PDL::ImageND;
>
> # The script reads three images, crops them, and writes a single image as
> a GIF animation sequence
> my($image,$p,$q);
>
> $image = new Image::Magick;
> $image->Read('Bugs_Bunny.svg.png');
>
> $image->Read('ng-clipart-bugs-bunny-witch-hazel-drawing-looney-tunes-cartoon-bugs-and-lola-bunny.png');
> $image->Read('k.miff[1, 5, 3]');
> $image->Contrast();
> for($x = 0; $image->[$x]; $x++){
>         $image->[$x]->Frame('100x200') if $image->[$x]->Get('magick') eq
> 'GIF';
>         undef $image->[$x] if $image->[$x]->Get('columns') < 100;
> }
>
> $p = $image->[1];
>
> # Suppose you want to start out with a 100x100 pixel white canvas with a
> red
> $image = Image::Magick->new;
> $image->Set(size=>'100x100');
> $image->ReadImage('canvas:white');
> $image->Set('pixel[49,49]'=>'red');
>
> # Here we reduce the intensity of the red component at (1,1) by half:
> @pixels = $image->GetPixel(x=>1,y=>1);
> $pixels[0]*=0.5;
> $image->SetPixel(x=>1,y=>1,color=>\@pixels);
>
> # Or suppose you want to convert your color image to grayscale
> $image->Quantize(colorspace=>'gray');
>
> # Let's annotate an image with a taipai truetype font
> $text = 'Works like magick!';
> $image->Annotate(font=>'kai.ttf', pointsize=>40,fill=>'green',text=>$text);
>
> # Perhaps you want to extract all the pixel intensities from an image and
> write them to STDOUT
> @pixels = $image->GetPixels(map=>'I',
> height=>$height,width=>$width,normalize=>true);
> binmode STDOUT;
> print pack('B*',join('',@pixels));
>
> # Other clever things you can do with a PerlMagick objects include
> $i = "$#$p+1";   # return the number of images associated with object p
> push(@$q, @$p); # push the images from object p onto object q
> @$p = (); #delete the images but not the object p
> $p->Convolve([1, 2, 1, 2, 4, 2, 1, 2, 1]);
>

On Fri, Feb 4, 2022 at 9:41 AM David Mertens <[email protected]>
wrote:

> The issue isn't having the method, the issue is calling it on an unblessed
> reference. Can you show the code that gives this problem?
>
> Btw, my bet is that it's not a matter of having PDL's method. You would
> use PDL for number crunching, not gif animation. :-)
>
> David
>
> On Fri, Feb 4, 2022, 10:14 AM William Torrez Corea <[email protected]>
> wrote:
>
>> Ready, install the method from https://metacpan.org/pod/PDL::ImageND.
>>
>> $p->Convolve([1, 2, 1, 2, 4, 2, 1, 2, 1]);
>>>
>>
>>
>> According to the function convolve this declaration is of the following
>> way
>>
>>> $new = convolve $x, $kernel
>>>
>>> But when I declare the function in my code the result is wrong.
>>
>> Can't call method "Convolve" on unblessed reference at gifaninmation.pl
>>> line 47.
>>>
>>
>> I don't know in what part I am confused.
>>
>>
>>
>>
>>
>>
>> On Fri, Feb 4, 2022 at 8:34 AM Andrew Solomon <[email protected]> wrote:
>>
>>> Is this what you're looking for?
>>>
>>> https://metacpan.org/pod/PDL::ImageND
>>>
>>>
>>> On Fri, Feb 4, 2022 at 2:30 PM William Torrez Corea <
>>> [email protected]> wrote:
>>>
>>>> I'm using cpanm trying to find a method that contains the function
>>>> convolve but I only found the method Imager.
>>>>
>>>> https://metacpan.org/pod/Imager
>>>>
>>>> When I try to declare the method and use it in the code, the result is
>>>> always wrong.
>>>>
>>>> I am using the following libraries:
>>>>
>>>>>
>>>>>
>>>>>
>>>>> *#!/usr/local/bin/perl use Image::Magick;use Imager;*
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> With kindest regards, William.
>>>>
>>>> ⢀⣴⠾⠻⢶⣦⠀
>>>> ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system
>>>> ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org
>>>> ⠈⠳⣄⠀⠀⠀⠀
>>>>
>>>>
>>>
>>> --
>>> Andrew Solomon
>>> Director, Geekuni <https://geekuni.com/>
>>> P: +44 7931 946 062
>>> E: [email protected]
>>>
>>
>>
>> --
>>
>> With kindest regards, William.
>>
>> ⢀⣴⠾⠻⢶⣦⠀
>> ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system
>> ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org
>> ⠈⠳⣄⠀⠀⠀⠀
>>
>>

-- 

With kindest regards, William.

⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system
⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org
⠈⠳⣄⠀⠀⠀⠀