获得Windows Phone 7的EXIF标签 [英] Get EXIF tags in Windows Phone 7

问题描述

我想我得到了在Windows Phone 7的我一直在使用ExifLib尝试图像的所有EXIF标签，但似乎无法得到它的权利。

I would like to get all the EXIF tags of an image I took in Windows Phone 7. I have tried using ExifLib, but can't seem to get it right.

在 CaptureImageAvailable 我有下面的代码我的事件处理程序：

In my event handler for CaptureImageAvailable I have the following code:

JpegInfo info = ExifReader.ReadJpeg(e.ImageStream, "Pic.jpeg");
Dispatcher.BeginInvoke(delegate()
 {
      textBox1.Text = info.ExposureTime.ToString();
      textBox2.Text = info.FNumber.ToString();
                                });

e.ImageStream.Close();

两者 textBox1的和 TextBox2中正在显示0。

我的Cam.Capture事件每隔200毫秒解雇。这是否对这些价值有什么影响？

My "Cam.Capture event" is fired every 200 milliseconds. Does this have any effect on these values?

任何帮助将不胜感激！ ：）

Any help would be greatly appreciated! :)

推荐答案

我觉得一切都确定了你的代码，这些值只是没有设置

I think everything is ok with your code, the values just aren't set.

下面证据表明，这不是你的错：

Here is evidence that it's not your fault:

• 有一个看的这个博客帖子这主要是在阅读EXIF数据的教程。在那里，你找到数据的截图：许多值设置，但你需要的是也为0。但我不知道这是否真的照片拍摄的手机摄像头

• Have a look at this blog post which basically is a tutorial on reading EXIF data. There you find a screenshot of the data: many values are set but the ones you need are also 0. But I am not sure if this photo really was taken with the phone camera.

所以我测试自己和值如下;你需要的字段0以及

So I tested myself and the values are as follows; the fields you need are 0 as well:

Artist  ""
Copyright   null
DateTime    "2011:11:01 20:50:07"
Description null
ExposureTime    0.0
FileName    "\\Applications\\Data\\[GUID]\\Data\\PlatformData\\CameraCapture-[GUID].jpg.jpg"
FileSize    789355
Flash   No
FNumber 0.0
GpsLatitude {double[3]}
GpsLatitudeRef  Unknown
GpsLongitude    {double[3]}
GpsLongitudeRef Unknown
Height  1944
IsColor true
IsValid true
LoadTime    {00:00:00.1340000}
Make    "HTC"
Model   "7 Trophy"
Orientation TopRight
ResolutionUnit  Inch
Software    "Windows Phone 7.5"
ThumbnailData   {byte[14913]}
ThumbnailOffset 518
ThumbnailSize   14913
UserComment null
Width   2592
XResolution 72.0
YResolution 72.0

看起来像做一些与EXIF每200ms是的不的原因。出于好奇，我曾在EXIF数据第二次看synching与PC机图片之后。该值只是不存在。对不起。

Looks like doing something with the EXIF every 200ms is not the cause. Out of curiosity I had a second look at the EXIF data after synching the pictures with the PC. The values are just not there. Sorry.

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