php imagemagick创建一个Tiled Pyramid TIFF

问题描述

好吧，正如标题所说，我有一个问题。我的测试函数是这样的：

  $ imagePath =/ tmp / 511a3874a0da1; 
 $ pngName = $ imagePath。。png; 
 $ tifName = $ imagePath。。tif; 
 $ tempImg = new Imagick（）; 
 $ tempImg-> readImage（$ pngName）; 
 // $ tempImg-> roundCorners（150,150）; 
 // $ image-> transformImage（100x100，100x100）; 
 $ tempImg-> setFormat（'ptif'）; 
 $ tempImg-> setImageColorSpace（5）; 
 $ tempImg-> writeImage（$ tifName）; 
  

好吧，它生成一个tif文件，正如手册所说，ptif是'平铺金字塔的格式TIFF。我检查了imagemagick命令行工具，正常情况下应该是这样的：

 转换511a38e9a5cc5.png -define tiff：tile- geometry = 256x256 -compress jpeg'ptif：o.tif'
  

我测试这个命令并且它有效。但在PHP中，似乎我无法设置tile-geometry。当我测试php生成的tif文件和iipimage服务器日志告诉我这个文件没有平铺。任何人都知道如何通过平铺金字塔tiff？纯粹是通过php，而不是exec xxx。

解决方案

我不太熟悉平铺金字塔TIFF，但也许是某些东西像这样：

 <？php 
 $ tempImg = new Imagick（）; 
 $ tempImg-> readImage（image.png）; 
 $ tempImg-> setFormat（'ptif'）; 
 $ tempImg-> setImageDepth（8）; 
 $ tempImg-> setOption（'tiff：tile-geometry'，'256x256'）; 
 $ tempImg-> writeImage（result.tif）; 
？> 
  

well, i have a problem as the title says. My test function is like this:

$imagePath="/tmp/511a3874a0da1";
$pngName=$imagePath.".png";
$tifName=$imagePath.".tif";
$tempImg = new Imagick();
$tempImg->readImage($pngName);
//$tempImg->roundCorners(150,150);
//$image->transformImage("100x100", "100x100");
$tempImg->setFormat('ptif');
$tempImg->setImageColorSpace(5);
$tempImg->writeImage($tifName);

well, it generate a tif file, as the manual says, ptif is the format of 'tiled pyramid tiff'. I check the imagemagick command line tools, nomally, it should be like this:

convert 511a38e9a5cc5.png -define tiff:tile-geometry=256x256 -compress jpeg 'ptif:o.tif'

i test this command and it works. but in php ,it seems i have no way to set tile-geometry. When i test the php-generated tif file and the iipimage sever log tell me this file is not tiled. Anyone knows how to genetate a tiled pyramid tiff ? purely by php, not something like "exec xxx".

解决方案

I am not very familiar with tiled pyramid TIFFs, but maybe something like this:

<?php
$tempImg = new Imagick();
$tempImg->readImage("image.png");
$tempImg->setFormat('ptif');
$tempImg->setImageDepth(8);
$tempImg->setOption('tiff:tile-geometry','256x256');
$tempImg->writeImage("result.tif");
?>

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