如何在PHP中添加Gpano XMP元数据？
如何在PHP中添加Gpano XMP元数据？
提问于 2018-02-16 01:49:56
我需要在PHP中有计划地添加Gpano元数据，但我不知道该怎么做。
输入:一个没有Gpano元数据的简单的360图像。格式: jpeg、jpg。
输出:图像必须与带有Gpano元数据的Facebook 360一起工作，如下所示：
<rdf:Description rdf:about="" xmlns:GPano="http://ns.google.com/photos/1.0/panorama/">
<GPano:UsePanoramaViewer>True</GPano:UsePanoramaViewer>
<GPano:CaptureSoftware>Photo Sphere</GPano:CaptureSoftware>
<GPano:StitchingSoftware>Photo Sphere</GPano:StitchingSoftware>
<GPano:ProjectionType>equirectangular</GPano:ProjectionType>
<GPano:PoseHeadingDegrees>350.0</GPano:PoseHeadingDegrees>
<GPano:InitialViewHeadingDegrees>90.0</GPano:InitialViewHeadingDegrees>
<GPano:InitialViewPitchDegrees>0.0</GPano:InitialViewPitchDegrees>
<GPano:InitialViewRollDegrees>0.0</GPano:InitialViewRollDegrees>
<GPano:InitialHorizontalFOVDegrees>75.0</GPano:InitialHorizontalFOVDegrees>
<GPano:CroppedAreaLeftPixels>0</GPano:CroppedAreaLeftPixels>
<GPano:CroppedAreaTopPixels>0</GPano:CroppedAreaTopPixels>
<GPano:CroppedAreaImageWidthPixels>4000</GPano:CroppedAreaImageWidthPixels>
<GPano:CroppedAreaImageHeightPixels>2000</GPano:CroppedAreaImageHeightPixels>
<GPano:FullPanoWidthPixels>4000</GPano:FullPanoWidthPixels>
<GPano:FullPanoHeightPixels>2000</GPano:FullPanoHeightPixels>
<GPano:FirstPhotoDate>2012-11-07T21:03:13.465Z</GPano:FirstPhotoDate>
<GPano:LastPhotoDate>2012-11-07T21:04:10.897Z</GPano:LastPhotoDate>
<GPano:SourcePhotosCount>50</GPano:SourcePhotosCount>
<GPano:ExposureLockUsed>False</GPano:ExposureLockUsed>
</rdf:Description>最重要的是下面这几行：
<GPano:UsePanoramaViewer>True</GPano:UsePanoramaViewer>
<GPano:ProjectionType>equirectangular</GPano:ProjectionType>我尝试了这里提供的PHPJPEG元数据工具包：http://www.ozhiker.com/electronics/pjmt/，下面是我的代码，但我不知道到底要添加什么：
require_once('PHP_JPEG_Metadata_Toolkit_1.12/JPEG.php');
require_once('PHP_JPEG_Metadata_Toolkit_1.12/XMP.php');
$metas = get_jpeg_header_data('image.jpg');
put_XMP_text($metas, 'what to write here ?');我也尝试过windows软件，它运行得很好，但无法在我的网络服务器(linux)上使用: Exif Fixer for Windows可以在这里找到：http://panoramaphotographer.com/software/exiffixer/
如果有人能帮助我编写代码，或者有人能发布一个有效的例子，那就太棒了！
提前感谢所有人。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-08-26 04:37:36
我用了The PHP JPEG Metadata Toolkit。
只需注意，它已经有几年没有更新了，可能会在PHP 7+中抛出一些错误，这些错误很容易修复(比如简短的打开php标签和数字前的0)。
修复这个问题后，用法非常简单：
require 'PHP_JPEG_Metadata_Toolkit_1.12/' . 'EXIF.php';
$filename = 'test.jpg';
$jpeg_header_data = get_jpeg_header_data($filename);
$xmp = '
<rdf:Description rdf:about="" xmlns:GPano="http://ns.google.com/photos/1.0/panorama/">
<GPano:UsePanoramaViewer>True</GPano:UsePanoramaViewer>
<GPano:CaptureSoftware>Photo Sphere</GPano:CaptureSoftware>
<GPano:StitchingSoftware>Photo Sphere</GPano:StitchingSoftware>
<GPano:ProjectionType>equirectangular</GPano:ProjectionType>
<GPano:PoseHeadingDegrees>350.0</GPano:PoseHeadingDegrees>
<GPano:InitialViewHeadingDegrees>90.0</GPano:InitialViewHeadingDegrees>
<GPano:InitialViewPitchDegrees>0.0</GPano:InitialViewPitchDegrees>
<GPano:InitialViewRollDegrees>0.0</GPano:InitialViewRollDegrees>
<GPano:InitialHorizontalFOVDegrees>75.0</GPano:InitialHorizontalFOVDegrees>
<GPano:CroppedAreaLeftPixels>0</GPano:CroppedAreaLeftPixels>
<GPano:CroppedAreaTopPixels>0</GPano:CroppedAreaTopPixels>
<GPano:CroppedAreaImageWidthPixels>4000</GPano:CroppedAreaImageWidthPixels>
<GPano:CroppedAreaImageHeightPixels>2000</GPano:CroppedAreaImageHeightPixels>
<GPano:FullPanoWidthPixels>4000</GPano:FullPanoWidthPixels>
<GPano:FullPanoHeightPixels>2000</GPano:FullPanoHeightPixels>
<GPano:FirstPhotoDate>2012-11-07T21:03:13.465Z</GPano:FirstPhotoDate>
<GPano:LastPhotoDate>2012-11-07T21:04:10.897Z</GPano:LastPhotoDate>
<GPano:SourcePhotosCount>50</GPano:SourcePhotosCount>
<GPano:ExposureLockUsed>False</GPano:ExposureLockUsed>
</rdf:Description>
';
$jpeg_header_data = put_XMP_text($jpeg_header_data, $xmp);
put_jpeg_header_data($filename, $filename, $jpeg_header_data);您可以在Google Developers documentation page中找到有关所需XMP元数据的更多信息。
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原文链接：
https://stackoverflow.com/questions/48813406
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