如何使用 libfreenect2 设置 OpenNI2 和 NITE 以在 OSX 上进行骨骼跟踪？

Question

我刚刚在 OSX 10.11.5 上设置了 libfreenect2，我可以成功运行 Protonect 演示显示 RGB/IR/depth 流，但我想也使用 OpenNI/NITE 进行骨骼追踪。

我已经按照 OpenNI 的 repo README 文件中的说明进行操作，但是当我尝试运行 NiViewer 时，我得到了这个：

NiViewer 
openDevice failed:
    DeviceOpen using default: no devices found

Press any key to continue . . .

我目前正在 github 上解决 libfreenect2 问题并记录我正在尝试的内容和结果 here。任何 hints/tips 都有帮助。

~~在 OSX 上使用 Kinect v2 使用 libfreenect2 设置和测试 OpenNI/NITE 的最简单方法是什么？~~

原来我应该使用 NiTE2.2 而使用 NiTE 1.5 我只是将 libfreenect2-openni2.0.dylib 从 libfreenect2/build/lib 复制到 NiTE-MacOSX-x64-2.2/Samples/Bin/OpenNI2/Drivers/ 然后运行 SimpleUserTracker 示例并且它起作用了！

还有一个问题：示例仅打印到控制台运行，但打开 window 并呈现的示例不起作用。没有 window 被呈现，就好像那个线程被某种方式阻塞了一样。那是我使用集成英特尔 GPU 的时候。如果我使用独立的 nVidia GPU，应用程序会崩溃：

./UserViewer 
   124095 INFO       New log started on 2016-08-30 20:32:19
   124114 INFO       --- Filter Info --- Minimum Severity: VERBOSE
   126001 VERBOSE    No override device in configuration file
   126029 VERBOSE    Configuration has been read from '/Users/George/Downloads/Grouped/Projects/code+libs/NiTE-MacOSX-x64-2.2/Samples/Bin/OpenNI.ini'
   126034 VERBOSE    OpenNI 2.2.0 (Build 21)-MacOSX (May 29 2013 14:03:30)
   126038 VERBOSE    Using '/Users/George/Downloads/Grouped/Projects/code+libs/NiTE-MacOSX-x64-2.2/Samples/Bin/OpenNI2/Drivers' as driver path
   126042 VERBOSE    Looking for drivers in drivers repository '/Users/George/Downloads/Grouped/Projects/code+libs/NiTE-MacOSX-x64-2.2/Samples/Bin/OpenNI2/Drivers'
   161329 INFO       New log started on 2016-08-30 20:32:19
   161447 INFO       --- Filter Info --- Minimum Severity: VERBOSE
   161457 VERBOSE    Initializing USB...
   166761 INFO       USB is initialized.
   286714 INFO       New log started on 2016-08-30 20:32:19
   286762 INFO       --- Filter Info --- Minimum Severity: VERBOSE
   286781 VERBOSE    Initializing USB...
   286804 INFO       USB is initialized.
[Info] [Freenect2Impl] enumerating devices...
[Info] [Freenect2Impl] 7 usb devices connected
[Info] [Freenect2Impl] found valid Kinect v2 @20:16 with serial 500722542042
[Info] [Freenect2Impl] found 1 devices
  5380695 INFO       Found device freenect2://0
  5380723 INFO       Driver: register new uri: freenect2://0
  5381065 INFO       Device connected: Microsoft Kinect (freenect2://0)
  5381101 INFO       Device state changed: Microsoft Kinect (freenect2://0) to 0
  5381115 INFO       Driver: register new uri: freenect2://0?depth-size=640x480
  5381123 INFO       Device connected: Microsoft Kinect (freenect2://0?depth-size=640x480)
  5381132 INFO       Device state changed: Microsoft Kinect (freenect2://0?depth-size=640x480) to 0
  5381139 INFO       Driver: register new uri: freenect2://0?depth-size=512x424
  5381149 INFO       Device connected: Microsoft Kinect (freenect2://0?depth-size=512x424)
  5381157 INFO       Device state changed: Microsoft Kinect (freenect2://0?depth-size=512x424) to 0
[Info] [Freenect2Impl] enumerating devices...
[Info] [Freenect2Impl] 7 usb devices connected
[Info] [Freenect2Impl] found valid Kinect v2 @20:16 with serial 500722542042
[Info] [Freenect2Impl] found 1 devices
 10381916 VERBOSE    Trying to open device by URI '(NULL)'
 10381940 INFO       deiveOpen: freenect2://0
 10381948 INFO       Opening device freenect2://0
[Info] [Freenect2DeviceImpl] opening...
[Info] [Freenect2DeviceImpl] transfer pool sizes rgb: 20*16384 ir: 4*128*33792
[Info] [Freenect2DeviceImpl] opened
 12312037 VERBOSE    Initialize: Already initialized
 12314810 INFO       Device: createStream(depth)
 12314892 INFO       Freenect2Driver::Device: start()
[Info] [Freenect2DeviceImpl] starting...
[Info] [Freenect2DeviceImpl] submitting rgb transfers...
[Info] [Freenect2DeviceImpl] submitting depth transfers...
[Info] [Freenect2DeviceImpl] started
2016-08-30 20:32:31.847 UserViewer[7575:4995528] GLUT Warning: glutInit being called a second time.
[Info] [VTRgbPacketProcessor] avg. time: 19.633ms -> ~50.9346Hz
[Info] [VTRgbPacketProcessor] avg. time: 19.6306ms -> ~50.9408Hz
[Info] [VTRgbPacketProcessor] avg. time: 19.0744ms -> ~52.4262Hz
[Info] [DepthPacketStreamParser] 417 packets were lost
Segmentation fault: 11

我怎样才能解决这个问题？

Answer 1

以上注释作为参考，供参考。这就是我用 libfreenect2 和它的 OpenNI2 驱动程序获得 OpenNI2/NITE2.2 骨架跟踪的方法。我有：

通过自制软件编译安装的 OpenNI2，并根据 github repo's readme instructions
下载NITE2.2（替换我之前用错的Nite1.5）
将 libfreenect2 OpenNI2 驱动程序 (ibfreenect2/build/lib/libfreenect2-openni2.0.dylib) 复制到我需要运行 NITE2 的 Drivers 文件夹（例如 NiTE-MacOSX-x64-2.2/Samples/Bin/OpenNI2/Drivers）。

我通过在 OpenNI.ini 中将日志级别设置为详细来找出路径错误：

[Log]
; 0 - Verbose; 1 - Info; 2 - Warning; 3 - Error. Default - None
Verbosity=0
LogToConsole=1
LogToFile=1

[Device]
;Override=""

[Drivers]
; Location of the drivers specified by a relative path based on OpenNI's shared library or an absolute path.
; Path separator "/" can be used to be portable for any platforms.
; Default - OpenNI2/Drivers
Repository=OpenNI2/Drivers

Symon Kaliski 跟着笔记写了一篇精彩的Kinect 2 on OSX with skeleton tracking post using OpenFrameworks，一定要看看！

此外，一旦 libfreenect2 编译后支持 openni2，它甚至可以在处理中使用，只需将 libfreenect2-openni2.0.dylib 放入 /Documents/Processing3/libraries/SimpleOpenNI/library/osx/OpenNI2（在 OSX 上）：

如何使用 libfreenect2 设置 OpenNI2 和 NITE 以在 OSX 上进行骨骼跟踪？

How to setup OpenNI2 and NITE with libfreenect2 for skeleton tracking on OSX?

macos

kinect

openni

libfreenect2

kinect-v2