I want to access custom TIFF tags

11 次查看（过去 30 天）
Mark Delaney
Mark Delaney 2011-7-7
I am interested in reading and writing custom tags in TIFF files using MATLAB. It appears, from a cursory review of the LibTiff website, that invoking tiffmergefieldinfo with a list of the custom tags I need to work with might be enough. But the call is not supported in the tiff object.
I would prefer to not maintain a custom build of the LibTiff library, although that would probably work.
Has anyone worked in this area already?

请先登录，再回答此问题。

回答（1 个）

Ashish Uthama
Ashish Uthama 2011-7-11
Mark, would the output of imfinfo be of any use? I think it reads custom tags (as 'unknown' tags in the output).
  3 个评论
显示 1更早的评论
Ashish Uthama
Ashish Uthama 2011-7-11
Mark, if they are numerical values or have fixed length, you could attempt to use the offset field of the unknown tag to gain raw-access to the location of the value in the file (fopen,fseek, fwrite, fclose). Of course, I am sure you are aware of the risks of doing so :)
Mark Delaney
Mark Delaney 2011-7-11
Possible. Painful. Would be very nice to be able to open tiff, do
t_out.setTag(myCustomTagID, 123)
and write t_out to the tiff directory or hte tiff file. The value proposition in MATLAB is all about working at higher levels of abstraction. It is great to have fseek et. al. for when all else fails, but much better to not need it.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Image Data 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by