ImageMagick：拆分多页32浮点TIFF图像

Question

我试图将32位多页TIFF图像转换为多个单个TIFF图像。

来自here

的命令

convert -depth 32 temp.tif single%d.tif

convert: Unknown field with tag 33550 (0x830e) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 33922 (0x8482) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34735 (0x87af) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34736 (0x87b0) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34737 (0x87b1) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 42113 (0xa481) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Sorry, can not handle images with 32-bit samples. `temp.tif' @ error/ti
ff.c/TIFFErrors/565.
convert: Unknown field with tag 33550 (0x830e) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 33922 (0x8482) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34735 (0x87af) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34736 (0x87b0) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34737 (0x87b1) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 42113 (0xa481) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Sorry, can not handle images with 32-bit samples. `temp.tif' @ error/ti
ff.c/TIFFErrors/565.
convert: Unknown field with tag 33550 (0x830e) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 33922 (0x8482) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34735 (0x87af) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34736 (0x87b0) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34737 (0x87b1) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 42113 (0xa481) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Sorry, can not handle images with 32-bit samples. `temp.tif' @ error/ti
ff.c/TIFFErrors/565.
convert: Unknown field with tag 33550 (0x830e) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 33922 (0x8482) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34735 (0x87af) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34736 (0x87b0) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34737 (0x87b1) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 42113 (0xa481) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Sorry, can not handle images with 32-bit samples. `temp.tif' @ error/ti
ff.c/TIFFErrors/565.
convert: Unknown field with tag 33550 (0x830e) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 33922 (0x8482) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34735 (0x87af) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34736 (0x87b0) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34737 (0x87b1) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 42113 (0xa481) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Sorry, can not handle images with 32-bit samples. `temp.tif' @ error/ti
ff.c/TIFFErrors/565.
convert: Unknown field with tag 33550 (0x830e) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 33922 (0x8482) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34735 (0x87af) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34736 (0x87b0) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 34737 (0x87b1) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Unknown field with tag 42113 (0xa481) encountered. `TIFFReadDirectory'
@ warning/tiff.c/TIFFWarnings/905.
convert: Sorry, can not handle images with 32-bit samples. `temp.tif' @ error/ti
ff.c/TIFFErrors/565.

似乎默认情况下它无法使用32位图像convert: Sorry, can not handle images with 32-bit samples。

convert -version

Version: ImageMagick 7.0.2-6 Q16 x64 2016-07-30 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Visual C++: 180040629
Features: Cipher DPC Modules OpenMP
Delegates (built-in): bzlib cairo flif freetype jng jp2 jpeg lcms lqr openexr pa
ngocairo png ps rsvg tiff webp xml zlib

有没有办法用ImageMagick做到这一点？

Answer 1

嗯，我尝试了Q16和Q32，HDRI和非HDRI版本的ImageMagick，其中大部分都是大多数选项的组合：

• -define quantum：format = floating-point
• -depth 32
• -define tiff：ignore-tags = 42113,34737,34736
• -define quantum：format = signed

我也无法到达任何地方！

我确实取得了一些成功，我认为vips这是一个相当轻量级，易于安装的软件包，但它取决于你以后想要对数据做什么：

你可以转换每个＆＃34;页面＆＃34;直接从TIF到32位PNG：

vips im_vips2png temp.tif:1 1.png
vips im_vips2png temp.tif:2 2.png

或者，您可以通过PPM格式：

进行长途跋涉

# Convert first "page" in TIF to vips format
vips im_tiff2vips temp.tif:1 1.v

# Convert second "page" in TIF to vips format
vips im_tiff2vips temp.tif:2 2.v

......等等所有5页。

然后我可以使用vips

将它们转换为浮动PPM

vips ppmsave 1.v 1.ppm
vips ppmsave 2.v 2.ppm

现在ImageMagick可以处理PPM文件：

convert 1.ppm a.png

这取决于你接下来要做什么......

Answer 2

tiff格式具有高度可扩展性，我建议查找/研究用于生成图像的专有软件。

关注Mark's fantastic answer，我能够研究以下内容......

私人Tiff标签

• 的GeoTIFF
  • 0x830e - ModelPixelScaleTag
  • 0x8482 - ModelTiepointTag
  • 0x87af - GeoKeyDirectoryTag
  • 0x87b0 - GeoDoubleParamsTag
  • 0x87b1 - GeoAsciiParamsTag
• GDAL图书馆
  • 0xa481 - GDAL_NODATA

TIFF错误

  

转换：抱歉，无法处理32位样本的图像。 `temp.tif'@ error / tiff.c / TIFFErrors / 564

此消息来自由ImageMagick链接的libtiff库。它根本不支持每个样本32位的TIFFTAG_BITSPERSAMPLE。这是tiff库使用的TIFFRGBAImageBegin方法的代码片段。

TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample);
switch (img->bitspersample) {
case 1: case 2: case 4:
case 8: case 16:
break;
default:
sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
    img->bitspersample);
return (0);
}

替代tiffsplit

如果任务只是将图层分成孤立的图像，那么tiffsplit可能会起作用......

tiffsplit temp.tif single_

...将生成single_aaa.tif，single_aab.tif和＆amp;等

然而，图像的最后一层显示为损坏：（