Large performance difference between opencv4tegra 2.4.13 and 3.3.1

Hi all,

I’m seeing a large discrepancy in performance between opencv4tegra 2.4.13 (Jetpack 3.1) and opencv4tegra 3.3.1 (Jetpack 3.2). Both of these were installed using jetpack, and the same test code is running on each.

TL;DR:

10000 calls to cv2.distanceTransform() with opencv4tegra 2.4.13 takes 6.555 seconds, while with version 3.3.1 it takes 10.269 seconds:

<b># with opencv 2.4.13</b>
$ python test_distance_transform.py 
Mon Jan 29 18:31:18 2018    prof

         10004 function calls in 6.555 seconds

   Ordered by: internal time

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
    10000    6.525    0.001    6.525    0.001 {cv2.distanceTransform}
        1    0.030    0.030    6.555    6.555 test_distance_transform.py:7(test)
...

<b># with opencv 3.3.1</b>
$ python test_distance_transform.py 
Mon Jan 29 21:34:06 2018    prof

         10004 function calls in 10.269 seconds

   Ordered by: internal time

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
    10000   10.238    0.001   10.238    0.001 {distanceTransform}
        1    0.031    0.031   10.269   10.269 test_distance_transform.py:6(test)
...

The actual test is using an internal profiler, but you will see similar results simply by running this script:

import cv2
import numpy as np


def test():
    blah = np.random.randint(low=0, high=255, size=(270,270), dtype=np.uint8)
    for i in xrange(10000):
        cv2.distanceTransform(blah, cv2.DIST_L2, cv2.DIST_MASK_PRECISE) 

test()

Any idea on how to make this faster? When profiling my target application, calls to Opencv are by far the slowest leg.

More info with specifics of the opencv build information

import cv2
print cv2.getBuildInformation()

For opencv 2.4.13.1

General configuration for OpenCV 2.4.13.1 =====================================
  Version control:               2.4.13.1-79-g66c98d9

  Platform:
    Host:                        Linux 4.4.38-tegra aarch64
    CMake:                       2.8.12.1
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/make
    Configuration:               Release

  C/C++:
    Built as dynamic libs?:      YES
    C++ Compiler:                /usr/bin/c++  (ver 5.4.0)
    C++ flags (Release):         -funwind-tables -fweb -fwrapv -frename-registers -fsched2-use-superblocks -fsched2-use-traces -fsched-stalled-insns-dep=100 -fsched-stalled-insns=2   -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wno-array-bounds -Wno-aggressive-loop-optimizations -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -funwind-tables -fweb -fwrapv -frename-registers -fsched2-use-superblocks -fsched2-use-traces -fsched-stalled-insns-dep=100 -fsched-stalled-insns=2   -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wno-array-bounds -Wno-aggressive-loop-optimizations -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    C Compiler:                  /usr/bin/cc
    C flags (Release):           -funwind-tables -fweb -fwrapv -frename-registers -fsched2-use-superblocks -fsched2-use-traces -fsched-stalled-insns-dep=100 -fsched-stalled-insns=2   -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -Wno-array-bounds -Wno-aggressive-loop-optimizations -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -funwind-tables -fweb -fwrapv -frename-registers -fsched2-use-superblocks -fsched2-use-traces -fsched-stalled-insns-dep=100 -fsched-stalled-insns=2   -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -Wno-array-bounds -Wno-aggressive-loop-optimizations -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):      
    Linker flags (Debug):        
    ccache:                      NO
    Precompiled headers:         NO

  OpenCV modules:
    To be built:                 core flann imgproc highgui features2d calib3d ml objdetect video contrib legacy photo gpu stitching tegra detection_based_tracker esm_panorama facedetect imuvstab python superres ts videostab vstab
    Disabled:                    nonfree world
    Disabled by dependency:      -
    Unavailable:                 androidcamera dynamicuda java ocl viz

  GUI: 
    QT:                          NO
    GTK+ 2.x:                    YES (ver 2.24.30)
    GThread :                    YES (ver 2.48.2)
    GtkGlExt:                    NO
    OpenGL support:              NO
    VTK support:                 NO

  Media I/O: 
    ZLib:                        /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.8)
    JPEG:                        /usr/lib/aarch64-linux-gnu/libjpeg.so (ver )
    PNG:                         /usr/lib/aarch64-linux-gnu/libpng.so (ver 1.2.54)
    TIFF:                        /usr/lib/aarch64-linux-gnu/libtiff.so (ver 42 - 4.0.6)
    JPEG 2000:                   /usr/lib/aarch64-linux-gnu/libjasper.so (ver 1.900.1)
    OpenEXR:                     NO

  Video I/O:
    DC1394 1.x:                  NO
    DC1394 2.x:                  NO
    FFMPEG:                      YES
      avcodec:                   YES (ver 56.60.100)
      avformat:                  YES (ver 56.40.101)
      avutil:                    YES (ver 54.31.100)
      swscale:                   YES (ver 3.1.101)
      avresample:                NO
    GStreamer:                   NO
    OpenNI:                      NO
    OpenNI PrimeSensor Modules:  NO
    PvAPI:                       NO
    GigEVisionSDK:               NO
    UniCap:                      NO
    UniCap ucil:                 NO
    V4L/V4L2:                    NO/YES
    XIMEA:                       NO
    Xine:                        NO

  Other third-party libraries:
    Use IPP:                     NO
    Use Eigen:                   YES (ver 3.2.92)
    Use TBB:                     YES (ver 4.4 interface 9002)
    Use OpenMP:                  NO
    Use GCD                      NO
    Use Concurrency              NO
    Use C=:                      NO
    Use Cuda:                    YES (ver 8.0)
    Use OpenCL:                  NO

  NVIDIA CUDA
    Use CUFFT:                   YES
    Use CUBLAS:                  NO
    USE NVCUVID:                 NO
    NVIDIA GPU arch:             62
    NVIDIA PTX archs:
    Use fast math:               NO
    Tiny gpu module:             NO

  Python:
    Interpreter:                 /usr/bin/python2 (ver 2.7.12)
    Libraries:                   /usr/lib/aarch64-linux-gnu/libpython2.7.so (ver 2.7.12)
    numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.11.0)
    packages path:               lib/python2.7/dist-packages

  Java:
    ant:                         NO
    JNI:                         NO
    Java tests:                  NO

  Documentation:
    Build Documentation:         NO
    Sphinx:                      NO
    PdfLaTeX compiler:           NO
    Doxygen:                     NO

  Tests and samples:
    Tests:                       YES
    Performance tests:           YES
    C/C++ Examples:              YES

  Install path:                  /usr

  cvconfig.h is in:              /home/ubuntu/build-opencv/build
-----------------------------------------------------------------

For opencv 3.3.1:

General configuration for OpenCV 3.3.1 =====================================
  Version control:               3.3.1

  Platform:
    Timestamp:                   2017-11-13T07:18:22Z
    Host:                        Linux 4.4.38-tegra aarch64
    CMake:                       2.8.12.2
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/make
    Configuration:               Release

  CPU/HW features:
    Baseline:                    NEON FP16
      required:                  NEON
      disabled:                  VFPV3

  C/C++:
    Built as dynamic libs?:      YES
    C++ Compiler:                /usr/bin/c++  (ver 5.4.0)
    C++ flags (Release):         -D _GLIBCXX_USE_CXX11_ABI=0   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -D _GLIBCXX_USE_CXX11_ABI=0   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
    C Compiler:                  /usr/bin/cc
    C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):      
    Linker flags (Debug):        
    ccache:                      NO
    Precompiled headers:         NO
    Extra dependencies:          dl m pthread rt /usr/lib/aarch64-linux-gnu/libtbb.so
    3rdparty dependencies:

  OpenCV modules:
    To be built:                 core flann imgproc ml objdetect photo video dnn imgcodecs shape videoio highgui superres ts features2d calib3d stitching videostab python2
    Disabled:                    js world
    Disabled by dependency:      -
    Unavailable:                 cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python3 viz

  GUI: 
    QT:                          NO
    GTK+ 2.x:                    YES (ver 2.24.30)
    GThread :                    YES (ver 2.48.2)
    GtkGlExt:                    NO
    OpenGL support:              NO
    VTK support:                 NO

  Media I/O: 
    ZLib:                        /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.8)
    JPEG:                        /usr/lib/aarch64-linux-gnu/libjpeg.so (ver )
    WEBP:                        build (ver encoder: 0x020e)
    PNG:                         /usr/lib/aarch64-linux-gnu/libpng.so (ver 1.2.54)
    TIFF:                        /usr/lib/aarch64-linux-gnu/libtiff.so (ver 42 - 4.0.6)
    JPEG 2000:                   /usr/lib/aarch64-linux-gnu/libjasper.so (ver 1.900.1)
    OpenEXR:                     NO
    GDAL:                        NO
    GDCM:                        NO

  Video I/O:
    DC1394 1.x:                  NO
    DC1394 2.x:                  NO
    FFMPEG:                      YES
      avcodec:                   YES (ver 56.60.100)
      avformat:                  YES (ver 56.40.101)
      avutil:                    YES (ver 54.31.100)
      swscale:                   YES (ver 3.1.101)
      avresample:                NO
    GStreamer:                   NO
    OpenNI:                      NO
    OpenNI PrimeSensor Modules:  NO
    OpenNI2:                     NO
    PvAPI:                       NO
    GigEVisionSDK:               NO
    Aravis SDK:                  NO
    UniCap:                      NO
    UniCap ucil:                 NO
    V4L/V4L2:                    NO/YES
    XIMEA:                       NO
    Xine:                        NO
    Intel Media SDK:             NO
    gPhoto2:                     NO

  Parallel framework:            TBB (ver 4.4 interface 9002)

  Trace:                         YES ()

  Other third-party libraries:
    Use Intel IPP:               NO
    Use Intel IPP IW:            NO
    Use VA:                      NO
    Use Intel VA-API/OpenCL:     NO
    Use Lapack:                  NO
    Use Eigen:                   YES (ver 3.2.92)
    Use Cuda:                    NO
    Use OpenCL:                  NO
    Use OpenVX:                  NO
    Use custom HAL:              YES (carotene (ver 0.0.1))

  Python 2:
    Interpreter:                 /usr/bin/python2.7 (ver 2.7.12)
    Libraries:                   /usr/lib/aarch64-linux-gnu/libpython2.7.so (ver 2.7.12)
    numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.11.0)
    packages path:               lib/python2.7/dist-packages

  Python 3:
    Interpreter:                 /usr/bin/python3 (ver 3.5.1)

  Python (for build):            /usr/bin/python2.7

  Java:
    ant:                         NO
    JNI:                         NO
    Java wrappers:               NO
    Java tests:                  NO

  Matlab:                        Matlab not found or implicitly disabled

  Documentation:
    Doxygen:                     NO

  Tests and samples:
    Tests:                       YES
    Performance tests:           YES
    C/C++ Examples:              YES

  Install path:                  /usr

  cvconfig.h is in:              /home/nvidia/build-opencv/build
-----------------------------------------------------------------

The 3.3.1 version provided in JetPack3.2 is not optimized, has no cuda nor gstreamer support: https://devtalk.nvidia.com/default/topic/1027301/jetson-tx2/jetpack-3-2-mdash-l4t-r28-2-developer-preview-for-jetson-tx2/post/5225602/#5225602.

You may instead build your own opencv3 from source. You may check this: https://jkjung-avt.github.io/opencv3-on-tx2/.

If you want to try more optimizations, you may try some flags from this: https://devtalk.nvidia.com/default/topic/1028179/jetson-tx2/gcc-options-for-tx2/post/5230415/#5230415.

@Honey_Patouceul

Thanks for the reply! I should have added that I have also attempted to build opencv 3.3.0 myself with cuda and gstreamer support (but against Cuda 8, not 9!), and saw no performance gain.

I supposed I’ll have to try some of the additional flags from your third link. Any idea when 3.2 should be available proper?

Opencv 3.3.0 built from source on tegra:

$ python test_distance_transform.py 
Mon Jan 29 18:25:33 2018    prof

         10004 function calls in 10.182 seconds

   Ordered by: internal time

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
    10000   10.150    0.001   10.150    0.001 {distanceTransform}
        1    0.032    0.032   10.182   10.182 test_distance_transform.py:6(test)

And here is that build configuration:

=== Opencv built from source for tegra ===
General configuration for OpenCV 3.3.0 =====================================
  Version control:               3.3.0

  Platform:
    Timestamp:                   2018-01-29T04:37:12Z
    Host:                        Linux 4.4.38-tegra aarch64
    CMake:                       3.5.1
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/make
    Configuration:               Release

  CPU/HW features:
    Baseline:                    NEON FP16
      required:                  NEON
      disabled:                  VFPV3

  C/C++:
    Built as dynamic libs?:      YES
    C++ Compiler:                /usr/bin/c++  (ver 5.4.0)
    C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
    C Compiler:                  /usr/bin/cc
    C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections    -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):
    Linker flags (Debug):
    ccache:                      NO
    Precompiled headers:         NO
    Extra dependencies:          gtk-x11-2.0 gdk-x11-2.0 pangocairo-1.0 atk-1.0 cairo gdk_pixbuf-2.0 gio-2.0 pangoft2-1.0 pango-1.0 fontconfig freetype gthread-2.0 /usr/lib/aarch64-linux-gnu/libpng.so /usr/lib/aarch64-linux-gnu/libz.so /usr/lib/aarch64-linux-gnu/libtiff.so /usr/lib/aarch64-linux-gnu/libjasper.so /usr/lib/aarch64-linux-gnu/libjpeg.so gstbase-1.0 gstreamer-1.0 gobject-2.0 glib-2.0 gstvideo-1.0 gstapp-1.0 gstriff-1.0 gstpbutils-1.0 avcodec-ffmpeg avformat-ffmpeg avutil-ffmpeg swscale-ffmpeg dl m pthread rt /usr/lib/aarch64-linux-gnu/libtbb.so cudart nppc nppi npps cublas cufft -L/usr/local/cuda-8.0/lib64
    3rdparty dependencies:

  OpenCV modules:
    To be built:                 cudev core cudaarithm flann imgproc ml objdetect video cudabgsegm cudafilters cudaimgproc cudawarping dnn imgcodecs photo shape videoio cudacodec highgui ts features2d calib3d cudafeatures2d cudalegacy cudaobjdetect cudaoptflow cudastereo stitching superres videostab python2
    Disabled:                    world
    Disabled by dependency:      -
    Unavailable:                 java python3 viz

  GUI: 
    QT:                          NO
    GTK+ 2.x:                    YES (ver 2.24.30)
    GThread :                    YES (ver 2.48.1)
    GtkGlExt:                    NO
    OpenGL support:              NO
    VTK support:                 NO

  Media I/O: 
    ZLib:                        /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.8)
    JPEG:                        /usr/lib/aarch64-linux-gnu/libjpeg.so (ver )
    WEBP:                        build (ver encoder: 0x020e)
    PNG:                         /usr/lib/aarch64-linux-gnu/libpng.so (ver 1.2.54)
    TIFF:                        /usr/lib/aarch64-linux-gnu/libtiff.so (ver 42 - 4.0.6)
    JPEG 2000:                   /usr/lib/aarch64-linux-gnu/libjasper.so (ver 1.900.1)
    OpenEXR:                     NO
    GDAL:                        NO
    GDCM:                        NO

  Video I/O:
    DC1394 1.x:                  NO
    DC1394 2.x:                  NO
    FFMPEG:                      YES
      avcodec:                   YES (ver 56.60.100)
      avformat:                  YES (ver 56.40.101)
      avutil:                    YES (ver 54.31.100)
      swscale:                   YES (ver 3.1.101)
      avresample:                NO
    GStreamer:                   
      base:                      YES (ver 1.8.3)
      video:                     YES (ver 1.8.3)
      app:                       YES (ver 1.8.3)
      riff:                      YES (ver 1.8.3)
      pbutils:                   YES (ver 1.8.3)
    OpenNI:                      NO
    OpenNI PrimeSensor Modules:  NO
    OpenNI2:                     NO
    PvAPI:                       NO
    GigEVisionSDK:               NO
    Aravis SDK:                  NO
    UniCap:                      NO
    UniCap ucil:                 NO
    V4L/V4L2:                    NO/YES
    XIMEA:                       NO
    Xine:                        NO
    Intel Media SDK:             NO
    gPhoto2:                     NO

  Parallel framework:            TBB (ver 4.4 interface 9002)

  Trace:                         YES ()

  Other third-party libraries:
    Use Intel IPP:               NO
    Use Intel IPP IW:            NO
    Use VA:                      NO
    Use Intel VA-API/OpenCL:     NO
    Use Lapack:                  NO
    Use Eigen:                   YES (ver 3.2.92)
    Use Cuda:                    YES (ver 8.0)
    Use OpenCL:                  NO
    Use OpenVX:                  NO
    Use custom HAL:              YES (carotene (ver 0.0.1))

  NVIDIA CUDA
    Use CUFFT:                   YES
    Use CUBLAS:                  YES
    USE NVCUVID:                 NO
    NVIDIA GPU arch:             62
    NVIDIA PTX archs:
    Use fast math:               NO

  Python 2:
    Interpreter:                 /usr/bin/python2.7 (ver 2.7.12)
    Libraries:                   /usr/lib/aarch64-linux-gnu/libpython2.7.so (ver 2.7.12)
    numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.11.0)
    packages path:               lib/python2.7/dist-packages

  Python 3:
    Interpreter:                 /usr/bin/python3 (ver 3.5.1)

  Python (for build):            /usr/bin/python2.7

  Java:
    ant:                         NO
    JNI:                         NO
    Java wrappers:               NO
    Java tests:                  NO

  Matlab:                        Matlab not found or implicitly disabled

  Documentation:
    Doxygen:                     NO

  Tests and samples:
    Tests:                       YES
    Performance tests:           YES
    C/C++ Examples:              NO

  Install path:                  /usr

  cvconfig.h is in:              /home/nvidia/opencv/build
-----------------------------------------------------------------