使用原生iOS相机应用拍摄的照片始终是UIImageOrientationUp

Question

I'm working on building a test case of all possible image and video orientations taken with the iPhone. 我正在努力构建一个使用iPhone拍摄的所有可能图像和视频方向的测试用例。

I've used the native iOS camera app to shoot all 8 possible orientations (UP, DOWN, LEFT, RIGHT) yet for the sample code I'm running it all seems to reporting that the images are 我已经使用原生的iOS相机应用程序来拍摄所有8个可能的方向（向上，向下，向左，向右）但是我正在运行的示例代码似乎都报告图像是

Reference code is printOrientationForName(@“UIImage”, image.imageOrientation); 参考代码是printOrientationForName(@“UIImage”, image.imageOrientation); Working example can be found here sugarso/Orientation 可以在这里找到工作示例sugarso / Orientation

Output is here 输出在这里

2014-05-04 15:42:39.651 Orientation[10293:60b] ASSET ALAsset - Type:Photo, URLs:assets-library://asset/asset.JPG?id=E819189D-0696-4C94-8046-804CBF1551E8&ext=JPG
2014-05-04 15:42:39.661 Orientation[10293:60b] UIImage UIImageOrientationUp [0]
2014-05-04 15:42:39.663 Orientation[10293:60b] ASSET ALAsset - Type:Photo, URLs:assets-library://asset/asset.JPG?id=19E29D06-96F2-4B35-A0EB-B2A809A02C79&ext=JPG
2014-05-04 15:42:39.665 Orientation[10293:60b] UIImage UIImageOrientationUp [0]
2014-05-04 15:42:39.667 Orientation[10293:60b] ASSET ALAsset - Type:Photo, URLs:assets-library://asset/asset.JPG?id=265261C0-0479-41C4-BFDC-91AD6887A81F&ext=JPG
2014-05-04 15:42:39.668 Orientation[10293:60b] UIImage UIImageOrientationUp [0]
2014-05-04 15:42:39.669 Orientation[10293:60b] ASSET ALAsset - Type:Photo, URLs:assets-library://asset/asset.JPG?id=BE459DAE-0CFD-4D93-8050-5C62D9F5D0F9&ext=JPG
2014-05-04 15:42:39.670 Orientation[10293:60b] UIImage UIImageOrientationUp [0]

As you can see, all the images are created with UIImageOrientationUp. 如您所见，所有图像都是使用UIImageOrientationUp创建的。 I'm examining the wrong property? 我正在检查错误的财产？ Or is the camera app flips all the photos? 或者相机应用翻转所有照片？ How should I be taking photos with the given layout. 我应该如何使用给定的布局拍照。

Answer 1

Depends on different things, for instance: 取决于不同的事情，例如：

if you do not save them on the asset library along with their metadata and later you open them, they will load with the default orientation (UIImageOrintationUp) 如果您不将它们与元数据一起保存在资产库中，稍后打开它们，它们将加载默认方向（UIImageOrintationUp）
if you save them as png, images don't have a knowledge about their orientation 如果将它们保存为png，则图像不了解其方向
the orientation is different if you load/shoot them with the picker, or delegate buffer, or still images 如果使用拾取器，委托缓冲区或静止图像加载/拍摄它们，方向会有所不同

I wrote this post on my blog ( Exif pain ), maybe it will help to check your issue 我在我的博客上写了这篇文章（ Exif痛苦），也许这有助于检查你的问题

使用原生iOS相机应用拍摄的照片始终是UIImageOrientationUp

问题描述

1 个解决方案

解决方案1
2 2014-05-04 13:36:55

使用原生iOS相机应用拍摄的照片始终是UIImageOrientationUp

问题描述

1 个解决方案

解决方案1 2 2014-05-04 13:36:55

解决方案1
2 2014-05-04 13:36:55