2010. 6. 4. 22:16
Computer Vision
OpenCV 함수 cvFindCornerSubPix or cv::cornerSubPix
ref.
Learning OpenCV: Chapter 10. Tracking and Motion: "Subpixel Corners"
source code file: /opencv/src/cv/cvcornersubpix.cpp
link: https://code.ros.org/trac/opencv/browser/tags/2.1/opencv/src/cv/cvcornersubpix.cpp
fitting a curve (a parabola)
ref. newer techniques
Lucchese02
Chen05
CvTermCriteria
icvGetRectSubPix_8u32f_C1R()
definition: source code file: /opencv/src/cv/cvsamplers.cpp
icvSepConvSmall3_32f()
definition: source code file: /opencv/src/cv/cvderiv.cpp
ref.
Learning OpenCV: Chapter 10. Tracking and Motion: "Subpixel Corners"
319p: If you are processing images for the purpose of extracting geometric measurements, as opposed to extracting features for recognition, then you will normally need more resolution than the simple pixel values supplied by cvGoodFeaturesToTrack(). That is subpixels come with integer coordinates whereas we sometimes require real-valued coordinates.
source code file: /opencv/src/cv/cvcornersubpix.cpp
link: https://code.ros.org/trac/opencv/browser/tags/2.1/opencv/src/cv/cvcornersubpix.cpp
fitting a curve (a parabola)
ref. newer techniques
Lucchese02
Chen05
CvTermCriteria
icvGetRectSubPix_8u32f_C1R()
definition: source code file: /opencv/src/cv/cvsamplers.cpp
icvSepConvSmall3_32f()
definition: source code file: /opencv/src/cv/cvderiv.cpp