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build ATAM Jul 2, 2015
data ATAM Jul 2, 2015
proj simplified the code May 30, 2016
src removed meaningless codes Jun 6, 2016
.gitignore ATAM Jul 2, 2015
CMakeLists.txt simplified the code May 30, 2016
DataDirectory.h.in ATAM Jul 2, 2015
LICENSE ATAM Jul 2, 2015
readme.MD revised readme.MD Aug 10, 2016

readme.MD

About

Hideaki Uchiyama, Takafumi Taketomi, Sei Ikeda and Joao Paulo Silva do Monte Lima, "Abecedary Tracking and Mapping: a Toolkit for Tracking Competitions," Proceedings of the 14th IEEE International Symposium on Mixed and Augmented Reality, pp.198-199, 2015.

Dependency

  • OpenCV 3.1
  • cvsba
  • LAPACK

Installation on Windows 64 bit (may not work on 32 bit)

1. Download and install following software

  • CMake 2.8 (or other versions may be OK) from http://www.cmake.org/
  • Visual Studio 2015 (or other IDEs may be OK)

2. Download and unzip following software somewhere (e.g. in C:/3rdparty)

3. Compile CLAPACK with CMake

  • Set clapack-3.2.1-CMAKE to "Where is the source code"
  • Set clapack-3.2.1-CMAKE/build to "Where to build the binaries"
  • Press Configure and Generate
  • Open clapack-3.2.1-CMAKE/build/CLAPACK.sln and compile it in Release mode

4. Copy all files in cvsba-1.0.0/src/ to ATAM/src/cvsba/

5. Compile ATAM with CMake

  • Set ATAM to "Where is the source code"
  • Set ATAM/build to "Where to build the binaries"
  • Press Configure
  • Set OpenCV_DIR to opencv/build/
  • Press Configure
  • Set CLAPACK_DIR to clapack-3.2.1-CMAKE/build/
  • Press Configure and Generate

options for ATAM

  • Check SHOW_LOG if output log on console window
  • Check USE_MULTITHREAD if use multi threads for BA
  • Check USE_CHESSBOARD if use a chessboard for camera calibration, otherwise a dot pattern
  • Check USE_PGR if use a point grey camera, otherwise use a camera with OpenCV
  • Set PGR_INCLUDE_DIR to C:/Program Files/Point Grey Research/FlyCapture2/include (depends on where Flycapture is installed)
  • Set PGR_LIB to C:/Program Files/Point Grey Research/FlyCapture2/lib64/FlyCapture2.lib (depends on where Flycapture is installed)

How to use (on Windows)

Set a target project (CameraCapture, CameraCalibration and ATAM) as StartUp Project when initially open each .sln

1. CameraCapture

  • Open ATAM/build/proj/CameraCapture/CameraCapture.sln, compile and run it
  • May need to change mDeviceID to 1 or 2 at line 12 in Cam.cpp for a USB camera on laptop
  • Press space to start saving video and press space again to stop saving, and press q to close
  • Check ATAM/data/movie.avi

2. CameraCalibration

  • Print opencv/sources/doc/pattern.png on a A4 paper (acircles_pattern.png if uncheck USE_CHESSBOARD)
  • Need to change size in CCalibration::CCalibration() or call CCalibration::SetSize() if use different size
  • Open ATAM/build/proj/CameraCalibration/CameraCalibration.sln, compile and run it
  • Press space to capture images from different viewpoints several times, and press q to close
  • Check ATAM/data/camera.xml

3. ATAM

  • Open ATAM/build/proj/ATAM/ATAM.sln and modify
  • line 95 in cvsba.cpp as
    int nconstframes = imagePoints.size() > 2 ? 2 : 1; //mcon
  • line 233 in cvsba.cpp as
    //throw cv::Exception(8888, "Error occured during Sba optimization", "Sba::run", __FILE__, __LINE__);
    return -1;
  • line 636 in sba_levmar.c as
    //return SBA_ERROR;
  • Compile and run it
    • Ignore warning in cvsba
  • Press space to start, translate a camera and press space (initialization)
  • Press space to capture a calibration board from different viewpoints at least twice (registration)

Other operations of ATAM (on keyboard or window)

  • Press n if new points not appear (manually add a new keyframe)
  • Press n if relocalization not work (manually change view for relocalization)
  • Press c to visualize next challenge point
  • Press r to reset
  • Press q to close

Tips for ATAM

  • Dot colors

  • Blue: new points

  • White: mapped points

  • Red (small): projected mapped points

  • Parameters

  • MAXPTS: number of keypoints by ORB

  • LEVEL: number of pyramid levels for ORB

  • DESCDIST: maximum distance between two ORB descriptors for judging as a correct match (between 0 and 256)

  • BASEANGLE: criterion for adding a new keyframe (degree)

  • BAKEYFRAMES: number of keyframes for local bundle adjustment (e.g. more than 2)

  • PROJERR: maximum reprojection error for inlier (pixel)

  • MINPTS: minimum number of points for judging as stable tracking (e.g. not good if less than 20)

  • PATCHSIZE: size of patch for KLT (pixel)

  • MATCHKEYFRAME: minimum inlier ratio (inliers/matches) for keypoint matching in matching with keyframes (between 0 and 1)

  • RELOCALHIST: number of last keyframes used for relocalization (more than 1)

  • USEVIDEO: 1 if use video, otherwise 0 (use video saved with CameraCapture)

  • VIDEONAME: file name for video

  • CAMERANAME: file name for camera parameters

  • ATAM/data/challenge.txt for challenging points is
    4
    1 0 1 10
    7 5 12 1
    11 53 34 5
    19 11 21 9
    as
    Number of challenge points
    ID1 X1 Y1 Z1
    ID2 X2 Y2 Z2
    ID3 X3 Y3 Z3
    ID4 X4 Y4 Z4

  • Notes

  • If initialization failed, translate more and press space again

  • If tracking failed, move the camera to fit edges

  • Once run and close ATAM, can modify parameters in ATAM/data/params.xml