不支持的 TIFF 压缩
Unsupported TIFF Compression
我正在使用 openslide-python
打开一张 svs
图片,我 运行 遇到了以下问题:
>> import openslide as osi
>> a = osi.OpenSlide('image.svs')
产生错误
TIFFReadDirectory: Warning, Unknown field with tag 347 (0x15b) encountered.
image.svs: JPEG compression support is not configured.
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/manan/anaconda/lib/python2.7/site-packages/openslide/__init__.py", line 154, in __init__
self._osr = lowlevel.open(filename)
File "/home/manan/anaconda/lib/python2.7/site-packages/openslide/lowlevel.py", line 178, in _check_open
raise OpenSlideError(err)
openslide.lowlevel.OpenSlideError: Unsupported TIFF compression: 7
我无法在网上找到任何解决此问题的方法;我检查了 libopenjpeg
和任何其他相关库,以确保它们处于各自的最新版本。
if (!TIFFIsCODECConfigured(compression)) {
g_set_error(err, OPENSLIDE_ERROR, OPENSLIDE_ERROR_FAILED,
"Unsupported TIFF compression: %u", compression);
goto FAIL;
}
您会看到它使用 libtiff
:函数 TIFFIsCODECConfigured
由基础 libtiff
库提供(参见 man page)。
压缩标签设置为7
;这是不常见的支持 JPEG ('new-style' JPEG)
压缩方案 - 有时也称为 JPEG-in-TIFF
;您需要为其安装编解码器。
如果您还有幻灯片并使用过,例如Kodak Imaging,然后您可以使用不同的压缩方式再次扫描它们;但那将是一种来回走动的方式。尝试添加编解码器并在 libtiff
.
中启用它可能更容易
Support for JPEG compression is controlled by JPEG_SUPPORT. The JPEG codec that comes with libtiff is designed for use with release 5 or later of the Independent JPEG Group's freely available software distribution. This software can be retrieved from the directory ftp.uu.net:/graphics/jpeg/.
所以支持是可选的,您可能需要重建 libtiff
(参见 instructions)。
By default JPEG support is not configured.
参考文献:
- https://en.wikipedia.org/wiki/TIFF
- http://www.awaresystems.be/imaging/tiff/tifftags/compression.html
- http://www.awaresystems.be/imaging/tiff/faq.html
- http://www.awaresystems.be/imaging/tiff/tml.html#google
- https://web.archive.org/web/20160108212421/http://www.remotesensing.org/libtiff/TIFFTechNote2.html
- http://libtiff.maptools.org/
- http://www.asmail.be/msg0055223723.html
- http://www.alternatiff.com/resources/TIFFphotoshop.pdf
- https://support.microsoft.com/en-us/kb/885938
- https://support.microsoft.com/en-us/kb/238249
- http://www.libtiff.org/build.html
我正在使用 openslide-python
打开一张 svs
图片,我 运行 遇到了以下问题:
>> import openslide as osi
>> a = osi.OpenSlide('image.svs')
产生错误
TIFFReadDirectory: Warning, Unknown field with tag 347 (0x15b) encountered.
image.svs: JPEG compression support is not configured.
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/manan/anaconda/lib/python2.7/site-packages/openslide/__init__.py", line 154, in __init__
self._osr = lowlevel.open(filename)
File "/home/manan/anaconda/lib/python2.7/site-packages/openslide/lowlevel.py", line 178, in _check_open
raise OpenSlideError(err)
openslide.lowlevel.OpenSlideError: Unsupported TIFF compression: 7
我无法在网上找到任何解决此问题的方法;我检查了 libopenjpeg
和任何其他相关库,以确保它们处于各自的最新版本。
if (!TIFFIsCODECConfigured(compression)) {
g_set_error(err, OPENSLIDE_ERROR, OPENSLIDE_ERROR_FAILED,
"Unsupported TIFF compression: %u", compression);
goto FAIL;
}
您会看到它使用 libtiff
:函数 TIFFIsCODECConfigured
由基础 libtiff
库提供(参见 man page)。
压缩标签设置为7
;这是不常见的支持 JPEG ('new-style' JPEG)
压缩方案 - 有时也称为 JPEG-in-TIFF
;您需要为其安装编解码器。
如果您还有幻灯片并使用过,例如Kodak Imaging,然后您可以使用不同的压缩方式再次扫描它们;但那将是一种来回走动的方式。尝试添加编解码器并在 libtiff
.
Support for JPEG compression is controlled by JPEG_SUPPORT. The JPEG codec that comes with libtiff is designed for use with release 5 or later of the Independent JPEG Group's freely available software distribution. This software can be retrieved from the directory ftp.uu.net:/graphics/jpeg/.
所以支持是可选的,您可能需要重建 libtiff
(参见 instructions)。
By default JPEG support is not configured.
参考文献:
- https://en.wikipedia.org/wiki/TIFF
- http://www.awaresystems.be/imaging/tiff/tifftags/compression.html
- http://www.awaresystems.be/imaging/tiff/faq.html
- http://www.awaresystems.be/imaging/tiff/tml.html#google
- https://web.archive.org/web/20160108212421/http://www.remotesensing.org/libtiff/TIFFTechNote2.html
- http://libtiff.maptools.org/
- http://www.asmail.be/msg0055223723.html
- http://www.alternatiff.com/resources/TIFFphotoshop.pdf
- https://support.microsoft.com/en-us/kb/885938
- https://support.microsoft.com/en-us/kb/238249
- http://www.libtiff.org/build.html