Multitarget-tracker/vibe_src/BackgroundSubtract.cpp at master · smartcai/Multitarget-tracker · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
#include "BackgroundSubtract.h"

BackgroundSubtract::BackgroundSubtract(
	int channels,
	int samples,
	int pixel_neighbor,
	int distance_threshold,
	int matching_threshold,
	int update_factor
	)
{
	m_model = std::make_unique<vibe::VIBE>(channels, samples, pixel_neighbor, distance_threshold, matching_threshold, update_factor);
}

BackgroundSubtract::~BackgroundSubtract()
{
}

void BackgroundSubtract::init(const cv::Mat& image)
{
	if (image.channels() != m_model->GetChannels())
	{
		if (image.channels() == 1)
		{
			cv::Mat newImg;
			cv::cvtColor(image, newImg, CV_GRAY2BGR);
			m_model->init(newImg);
		}
		else if (image.channels() == 3)
		{
			cv::Mat newImg;
			cv::cvtColor(image, newImg, CV_BGR2GRAY);
			m_model->init(newImg);
		}
	}
	else
	{
		m_model->init(image);
	}
}

void BackgroundSubtract::subtract(const cv::Mat& image, cv::Mat& foreground)
{
	cv::Mat erodeElement = cv::getStructuringElement(0, cv::Size(5, 5), cv::Point(-1, -1));
	cv::Mat dilateElement = cv::getStructuringElement(0, cv::Size(3, 3), cv::Point(-1, -1));

	if (image.channels() != m_model->GetChannels())
	{
		if (image.channels() == 1)
		{
			cv::Mat newImg;
			cv::cvtColor(image, newImg, CV_GRAY2BGR);
			m_model->update(newImg);
		}
		else if (image.channels() == 3)
		{
			cv::Mat newImg;
			cv::cvtColor(image, newImg, CV_BGR2GRAY);
			m_model->update(newImg);
		}
	}
	else
	{
		m_model->update(image);
	}

	foreground = m_model->getMask();

	cv::erode(foreground, foreground, erodeElement, cv::Point(-1, -1), 1);
	cv::dilate(foreground, foreground, dilateElement, cv::Point(-1, -1), 2);
}