4. Vision research

cool products

pose estimation using opencv

    • SOLVEPNP_ITERATIVE Iterative method is based on Levenberg-Marquardt optimization. In this case the function finds such a pose that minimizes reprojection error, that is the sum of squared distances between the observed projections imagePoints and the projected (using projectPoints ) objectPoints .

    • SOLVEPNP_P3P Method is based on the paper of X.S. Gao, X.-R. Hou, J. Tang, H.-F. Chang "Complete Solution Classification for the Perspective-Three-Point Problem". In this case the function requires exactly four object and image points.

    • SOLVEPNP_EPNP Method has been introduced by F.Moreno-Noguer, V.Lepetit and P.Fua in the paper "EPnP: Efficient Perspective-n-Point Camera Pose Estimation".

    • SOLVEPNP_DLS Method is based on the paper of Joel A. Hesch and Stergios I. Roumeliotis. "A Direct Least-Squares (DLS) Method for PnP".

    • SOLVEPNP_UPNP Method is based on the paper of A.Penate-Sanchez, J.Andrade-Cetto, F.Moreno-Noguer. "Exhaustive Linearization for Robust Camera Pose and Focal Length Estimation". In this case the function also estimates the parameters fx and fy assuming that both have the same value. Then the cameraMatrix is updated with the estimated focal length.

Four point and face

IMU and vision

Wearable Glass research

FPGA CNN

Tracking

arduino camera , face tracking arduino project

face detection demo https://youtu.be/JwX06vT4GOE

4-point algo

SLAM

Deep net

Hintion

cuhk

jhu

Chinese words

http://www.cidianwang.com/shufa/

http://tool.wikichina.com/shufa/

http://humanum.arts.cuhk.edu.hk/Lexis/lexi-mf/search.php?word=武

summer research

http://calvinkam.science/vision

OCR

Compilation of Tesseract : http://calvinkam.science/vision/doku.php/tesseract

Tesseract C API: http://calvinkam.science/vision/doku.php/tesseract:api

Wearable glass projects

https://www.youtube.com/watch?v=ad2DNBWgB-0

3D

http://www.pcworld.com/article/2042988/50-camera-rig-is-the-cheapest-diy-3d-scanning-system-around.html

Tools :

An Open Source Feature Selection Repository in Python - scikit-feature http://www.kdnuggets.com/2016/03/scikit-feature-open-source-feature-selection-python.htm and http://www.public.asu.edu/~huanliu

Kinect

http://zugara.com/how-does-the-kinect-2-compare-to-the-kinect-1https://dev.windows.com/en-us/kinect/hardware

http://rpg.ifi.uzh.ch/research_dense.html

http://vision.in.tum.de/research/lsdslam

Labs:

Tools:

Challenges