.NET C＃库无损的Exif重写？ [英] .NET C# library for lossless Exif rewriting?

问题描述

我已经找到了编辑的Exif 各种code和库。

I have found various code and libraries for editing Exif.

但它们毕竟只是无损当图像的宽度和高度是16的倍数。

But they are only lossless when the image width and height is multiple of 16.

我要寻找一个库（或者甚至是办法做到这一点我自己）编辑的JPEG文件只是Exif的部分（或添加Exif数据中，如果它还不存在），而使其他数据不变。是不是这可能吗？

I am looking for a library (or even a way to do it myself) to edit just the Exif portion in a JPEG file (or add Exif data if it doesn't exist yet), leaving the other data unmodified. Isn't that possible?

到目前为止，我只能找到的Exif部分（开始0xFFE1），但我不知道如何来读取数据。

So far I could only locate the Exif portion (starts with 0xFFE1) but I don't understand how to read the data.

推荐答案

下面是规格的Exif交换格式，如果你打算code自己的库进行编辑的标签。

Here are the specifications for the Exif interchange format, if you plan to code your own library for editing tags.

http://www.exif.org/specifications.html

下面是用Perl编写的库，以满足您的需求，您也许能够从中吸取教训：

Here's a library written in Perl that meets your needs that you may be able to learn from:

<一个href="http://www.sno.phy.queensu.ca/~phil/exiftool/">http://www.sno.phy.queensu.ca/~phil/exiftool/

下面是一个不错的.NET库的Exif评估从的code项目：

Here's a decent .NET library for Exif evaluation from The Code Project:

<一个href="http://www.$c$cproject.com/KB/graphics/exiftagcol.aspx">http://www.$c$cproject.com/KB/graphics/exiftagcol.aspx

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