chitr:Felis silvestris silvestris small gradual decrease of quality.png

Felis_silvestris_silvestris_small_gradual_decrease_of_quality.png((519 × 600 piksel, faail ka aakaar: 278 KB, MIME prakaar: image/png))

varnan[sampaadan]

jaankaari
English: Gradual JPEG artifacts example, with decreasing quality from right to left
dinaank
srot
lekhak
anya sanskaranon

Derivative works of this file: Felis silvestris silvestris small gradual decrease of quality - JPEG compression.jpg

Applications-graphics.svg This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Gradual JPEG artifacts example. The original can be viewed here: Felis silvestris silvestris.jpg. Modifications made by AzaToth.

Source code[sampaadan]

#!/usr/bin/perl 
use strict;
use warnings;
use v5.12;
use File::Temp qw/ tempdir /;
use Graphics::Magick;
use Math::Round qw(:all);
my $p = new Graphics::Magick;
$p->Read("Felis_silvestris_silvestris_small.png");
#$p->Resize('x600');
my ($width, $height) = $p->Get('width', 'height');
my $center = $height;
my $result = new Graphics::Magick;
$result->Set(size=>"${width}x${height}");
$result->Read();
$result->Set('quality', 100);
my $dir = tempdir(CLEANUP => 1);
my $chop = 16; # 1 MCU normally
my $vertical = 0;
for my $n (0..($vertical?$height:$width)) {
 next if $n%$chop; 
 my $current = $p->Clone();
 $current->Crop(width => $vertical?$width:$chop, height => $vertical?$chop:$height, x => $vertical?0:$n, y=>$vertical?$n:0);
		my $quality = round_even(100*abs(($n+6*$chop)**4/$center**4));
		say $quality;
 $current->Set('quality' => $quality);
 my $filename = sprintf "%s/%05d.jpg", $dir, $n;
 $current->Write($filename);
 my $m = new Graphics::Magick;
 $m->Read($filename);
 $result->Composite( image => $m, x => $vertical?0:$n, y => $vertical?$n:0);
}
$result->Write('Felis_silvestris_silvestris_small_gradual_decrease_of_quality.png');

laaisensing[sampaadan]

w:en:Creative Commons
एट्रीब्यूसन
yeh faail laaiseinsd hain is antargat kriyetiv kaumans etreebyooshan 3.0 anaported laaiseins .
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nimnalikhit kaaranon ke antargat:
  • etreebyoosan – aapko rachana ka shreya laaiseinsakarta athva lekhak ke bataaye gaye maadhyam se dena hoga (parantu is prakaar naheen ki usase lage ki ve aapko athva aapke dvaara rachana ke prayog ka samarthan karte hain).

mool apalod laug[sampaadan]

This image is a derivative work of the following images:

  • File:Felis_silvestris_silvestris.jpg licensed with Cc-by-3.0
    • 2010-02-18T00:29:12Z Michael Gäabler 1496x1729 (1659050 Bytes) {{Information |Description=''[[Felis silvestris silvestris|Felis silvestris silvestris]]'' (Schreber, 1775) {{en|1=[[:en: European Wildcat|European Wildcat]]}} {{de|1=[[:de:Europäaische Wildkatze|Europäaische Wildkatze]] im [

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dinaank/samay angoothaakaar praaroop aakaar sadasya pratikriya
vartamaan 21:28, 3 October 2011 21:28, 3 अक्टूबर 2011 के संस्करण का अंगूठाकार प्रारूप। 519 × 600 (278 KB) AzaToth

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