/*?Demo?of?modified?Lucas-Kanade?optical?flow?algorithm.
???See?the?printf?below?*/

#ifdef?_CH_
#pragma?package?
#endif

#ifndef?_EiC
#include?“cv.h“
#include?“highgui.h“
#include?
#include?
#endif

IplImage?*image?=?0?*grey?=?0?*prev_grey?=?0?*pyramid?=?0?*prev_pyramid?=?0?*swap_temp;

int?win_size?=?10;
const?int?MAX_COUNT?=?500;
CvPoint2D32f*?points[2]?=?{00}?*swap_points;
char*?status?=?0;
int?count?=?0;
int?need_to_init?=?0;
int?night_mode?=?0;
int?flags?=?0;
int?add_remove_pt?=?0;
CvPoint?pt;


void?on_mouse（?int?event?int?x?int?y?int?flags?void*?param?）
{
????if（?!image?）
????????return;

????if（?image->origin?）
????????y?=?image->height?-?y;

????if（?event?==?CV_EVENT_LBUTTONDOWN?）
????{
????????pt?=?cvPoint（xy）;
????????add_remove_pt?=?1;
????}
}


int?main（?int?argc?char**?argv?）
{
????CvCapture*?capture?=?0;
????
????capture?=?cvCaptureFromAVI（?argv[1]?）;

????if（?!capture?）
????{
????????fprintf（stderr“Could?not?initialize?capturing...\n“）;
????????return?-1;
????}
????printf（?“\tESC?-?quit?the?program\n“
????????????“\tr?-?auto-initialize?tracking\n“
????????????“\tc?-?delete?all?the?points\n“
????????????“\tn?-?switch?the?\“night\“?mode?on/off\n“
????????????“To?add/remove?a?feature?point?click?it\n“?）;

????cvNamedWindow（?“LkDemo“?0?）;
????cvSetMouseCallback（?“LkDemo“?on_mouse?0?）;

????for（;;）
????{
????????IplImage*?frame?=?0;
????????int?i?k?c;

????????frame?=?cvQueryframe（?capture?）;
????????if（?!frame?）
????????????break;

????????if（?!image?）
????????{
????????????/*?allocate?all?the?buffers?*/
????????????image?=?cvCreateImage（?cvGetSize（frame）?8?3?）;
????????????image->origin?=?frame->origin;
????????????grey?=?cvCreateImage（?cvGetSize（frame）?8?1?）;
????????????prev_grey?=?cvCreateImage（?cvGetSize（frame）?8?1?）;
????????????pyramid?=?cvCreateImage（?cvGetSize（frame）?8?1?）;
????????????prev_pyramid?=?cvCreateImage（?cvGetSize（frame）?8?1?）;
????????????points[0]?=?（CvPoint2D32f*）cvAlloc（MAX_COUNT*sizeof（points[0][0]））;
????????????points[1]?=?（CvPoint2D32f*）cvAlloc（MAX_COUNT*sizeof（points[0][0]））;
????????????status?=?（char*）cvAlloc（MAX_COUNT）;
????????????flags?=?0;
????????}

????????cvCopy（?frame?image?0?）;
????????cvCvtColor（?image?grey?CV_BGR2GRAY?）;

????????if（?night_mode?）
????????????cvZero（?image?）;
????????
????????if（?need_to_init?）
????????{
????????????/*?automatic?initialization?*/
????????????IplImage*?eig?=?cvCreateImage（?cvGetSize（grey）?32?1?）;
????????????IplImage*?temp?=?cvCreateImage（?cvGetSize（grey）?32?1?）;
????????????double?quality?=?0.01;
????????????double?min_distance?=?10;

????????????count?=?MAX_COUNT;
????????????cvGoodFeaturesToTrack（?grey?eig?temp?points[1]?&count
???????????????????????????????????quality?min_distance?0?3?0?0.04?）;
????????????cvFindCornerSubPix（?grey?points[1]?count
????????????????cvSize（win_size

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???19246080??2010-11-24?15:48??LKDemo\Debug\liu.avi

?????文件????2262016??2007-07-08?17:35??LKDemo\Debug\lkdemo.bsc

?????文件?????196675??2007-08-21?11:04??LKDemo\Debug\lkdemo.exe

?????文件?????220544??2007-08-21?11:04??LKDemo\Debug\lkdemo.ilk

?????文件??????25457??2007-08-21?11:04??LKDemo\Debug\lkdemo.obj

?????文件????3103468??2007-08-21?11:04??LKDemo\Debug\lkdemo.pch

?????文件?????476160??2007-08-21?11:04??LKDemo\Debug\lkdemo.pdb

?????文件??????????0??2007-07-08?17:35??LKDemo\Debug\lkdemo.sbr

?????文件??????50176??2010-12-29?11:01??LKDemo\Debug\vc60.idb

?????文件??????77824??2007-08-21?11:04??LKDemo\Debug\vc60.pdb

?????文件?????432700??2007-02-24?15:18??LKDemo\Debug\video1.avi

?????文件???????5362??2010-12-29?11:01??LKDemo\lkdemo.c

?????文件???????3484??2007-06-29?12:07??LKDemo\lkdemo.dsp

?????文件????????520??2007-06-29?12:07??LKDemo\lkdemo.dsw

?????文件??????58368??2010-12-29?13:13??LKDemo\lkdemo.ncb

?????文件?????349184??2010-12-29?13:13??LKDemo\lkdemo.opt

?????文件????????246??2010-12-02?20:11??LKDemo\lkdemo.plg

?????文件?????432700??2007-02-24?15:18??LKDemo\video1.avi

?????文件????????136??2009-12-25?15:01??LKDemo\說(shuō)明.txt

?????目錄??????????0??2010-12-29?09:57??LKDemo\Debug

?????目錄??????????0??2010-12-29?13:13??LKDemo

-----------?---------??----------?-----??----

?????????????26941100????????????????????21