基本信息

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   源码介绍

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通过帧差追踪小车

image = cvQueryFrame(capture);

if (image == NULL)
{
break;
}

cvShowImage("原始", image);
cvSmooth(image, image, CV_GAUSSIAN, 3, 0, 0, 0);
cvAbsDiff(image, image_pass, res0);
cvCvtColor(res0, res, CV_RGB2GRAY);
//cvThreshold(res, res, 50, 255, CV_THRESH_BINARY);
cvAdaptiveThreshold(res, res, 255, CV_ADAPTIVE_THRESH_MEAN_C, CV_THRESH_BINARY_INV, 5, 5);

cvShowImage("帧差视频", res);
cvShowImage("背景图像", pBkImg);
bg_diff(image, pBkImg, pFrImg, pFrameMat, pBkMat, pFrMat);
cvShowImage("背景差分视频", pFrImg);
cvZero(pFrame);
bin_img_or(pFrame, res, pFrImg);
cvDilate(pFrame, pFrame, 0, 1);
cvConvert(pFrame, pFrMat);
cvCopy(image, image_pass, NULL);
cvShowImage("或", pFrame);

if (nFrmNum > 1)
{
computeObject(pFrMat, image_width, image_height, LabeledMat, curr_head);

p_obj = curr_head->next;
while (p_obj != NULL)
{
cvRectangle(image, cvPoint(p_obj->x - 1, p_obj->y - 1), cvPoint(p_obj->x 1, p_obj->y 1), cvScalar(0, 0, 255), 4, 8, 0); //画出目标的质心
p_obj = p_obj->next;
}

if (nFrmNum == 3)
{
computeObject(pFrMat, image_width, image_height, LabeledMat, prev_head);
}


if (nFrmNum > 3)
{
movingObject *q = NULL, *p = NULL;

q = curr_head->next;
while (q)
{
for (p = prev_head->next; p; p = p->next)
{
dist = cal_dist(p->x, p->y, q->x, q->y);
if (dist <= 25)
{
break;
}

}
if (p == NULL)
{
//生成新标签
q->label = label_num;
}
q = q->next;
}

for (q = curr_head->next; q; q = q->next)
{
for (p = prev_head->next; p; p = p->next)
{
dist = cal_dist(p->x, p->y, q->x, q->y);
printf("dist is : %d\n", dist);
if (dist <= 15)
{
q->label = p->label;
q->head->next = p->head;
p->head = NULL;
}
}
draw_line(image, q->head);
cvRectangle(image, q->points[0], q->points[1], cvScalar(0, 255, 0));

char buf[10];
snprintf(buf, 10, "%d", q->label);
cvPutText(image, buf, cvPoint(q->points[0].x, q->points[0].y 20), &font1, CV_RGB(255, 255, 0));
}


printf("\n");
release_obj_link(prev_head->next);
prev_head->next = curr_head->next;
curr_head->next = NULL;
}

}
char FrmNum[30];
snprintf(FrmNum, 30, "Frame No: %d", nFrmNum);
cvPutText(image, FrmNum, cvPoint(1, 25), &font2, CV_RGB(0, 0, 255));

cvShowImage("video", image);


int inter = cvWaitKey(16);
if (inter == 27)
{
break;
}
if (inter == 32)
{
if (cvWaitKey(1500000) == 32)
{

}
}
}