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| #include <opencv2/opencv.hpp>
#include <opencv2/saliency.hpp>
void spectralResidualTest()
{
cv::Mat src_img = cv::imread("../data/true.png", CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
cv::namedWindow("src_img", CV_WND_PROP_ASPECTRATIO);
cv::imshow("src_img", src_img);
if (src_img.empty())
exit(-1);
if (src_img.channels() == 3)
cv::cvtColor(src_img, src_img, CV_BGR2GRAY);
cv::Mat planes[] = { cv::Mat_<float>(src_img), cv::Mat::zeros(src_img.size(), CV_32F) };
cv::Mat complex_img;
merge(planes, 2, complex_img);
dft(complex_img, complex_img);
cv::Mat magnitude, phase_angle, mag_mean;
cv::Mat real_part, imaginary_part;
split(complex_img, planes);
real_part = planes[0];
imaginary_part = planes[1];
cv::magnitude(real_part, imaginary_part, magnitude);
phase(real_part, imaginary_part, phase_angle);
float *pre, *pim, *pm, *pp;
for (int i = 0; i < magnitude.rows; i++)
{
pm = magnitude.ptr<float>(i);
for (int j = 0; j < magnitude.cols; j++)
{
*pm = log(*pm);
pm++;
}
}
blur(magnitude, mag_mean, cv::Size(5, 5));
magnitude = magnitude - mag_mean;
for (int i = 0; i < magnitude.rows; i++)
{
pre = real_part.ptr<float>(i);
pim = imaginary_part.ptr<float>(i);
pm = magnitude.ptr<float>(i);
pp = phase_angle.ptr<float>(i);
for (int j = 0; j < magnitude.cols; j++)
{
*pm = exp(*pm);
*pre = *pm * cos(*pp);
*pim = *pm * sin(*pp);
pre++;
pim++;
pm++;
pp++;
}
}
cv::Mat planes1[] = { cv::Mat_<float>(real_part), cv::Mat_<float>(imaginary_part) };
merge(planes1, 2, complex_img);
idft(complex_img, complex_img, cv::DFT_SCALE);
split(complex_img, planes);
real_part = planes[0];
imaginary_part = planes[1];
cv::magnitude(real_part, imaginary_part, magnitude);
for (int i = 0; i < magnitude.rows; i++)
{
pm = magnitude.ptr<float>(i);
for (int j = 0; j < magnitude.cols; j++)
{
*pm = (*pm) * (*pm);
pm++;
}
}
GaussianBlur(magnitude, magnitude, cv::Size(7, 7), 2.5, 2.5);
cv::Mat invDFT, invDFTcvt;
normalize(magnitude, invDFT, 0, 255, cv::NORM_MINMAX);
invDFT.convertTo(invDFTcvt, CV_8U);
cv::namedWindow("SpectualResidual", CV_WND_PROP_ASPECTRATIO);
cv::imshow("SpectualResidual", invDFTcvt);
cv::Mat thresholded;
cv::threshold(invDFTcvt, thresholded, 0, 255, CV_THRESH_OTSU);
cv::namedWindow("Thresholded Image", CV_WND_PROP_ASPECTRATIO);
cv::imshow("Thresholded Image", thresholded);
cv::Mat eroded;
cv::erode(thresholded, eroded, cv::Mat(5, 1, CV_8UC1, cv::Scalar(1)), cv::Point(-1, -1), 3);
cv::namedWindow("eroded Image", CV_WND_PROP_ASPECTRATIO);
cv::imshow("eroded Image", eroded);
cv::threshold(eroded, thresholded, 60, 255, CV_THRESH_BINARY);
cv::namedWindow("Thresholded eroded Image", CV_WND_PROP_ASPECTRATIO);
cv::imshow("Thresholded eroded Image", thresholded);
}
void saliencyTest()
{
cv::Mat src_img = cv::imread("../data/true.png", CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
cv::namedWindow("src_img", CV_WND_PROP_ASPECTRATIO);
cv::imshow("src_img", src_img);
if (src_img.empty())
exit(-1);
if (src_img.channels() == 3)
cv::cvtColor(src_img, src_img, CV_BGR2GRAY);
cv::Ptr<cv::saliency::Saliency> saliency_algorithm = cv::saliency::Saliency::create("SPECTRAL_RESIDUAL");
cv::Mat saliency_map;
if (saliency_algorithm->computeSaliency(src_img, saliency_map))
{
cv::namedWindow("SR saliency map", CV_WND_PROP_ASPECTRATIO);
cv::imshow("SR saliency map", saliency_map);
cv::Mat saliency_map_show(saliency_map.size(), CV_8UC1);
normalize(saliency_map, saliency_map_show, 0, 255, CV_MINMAX);
saliency_map_show.convertTo(saliency_map_show, CV_8U);
cv::namedWindow("saliency_map_show", CV_WND_PROP_ASPECTRATIO);
cv::imshow("saliency_map_show", saliency_map_show);
cv::Mat binary_map;
cv::saliency::StaticSaliencySpectralResidual spec;
if (spec.computeBinaryMap(saliency_map, binary_map))
{
cv::namedWindow("binary map", CV_WND_PROP_ASPECTRATIO);
cv::imshow("binary map", binary_map);
}
}
}
void FGSTest()
{
cv::Mat src_img = cv::imread("../data/true.png", CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
cv::namedWindow("src_img", CV_WND_PROP_ASPECTRATIO);
cv::imshow("src_img", src_img);
if (src_img.empty())
exit(-1);
if (src_img.channels() == 3)
cv::cvtColor(src_img, src_img, CV_BGR2GRAY);
cv::Ptr<cv::saliency::StaticSaliencyFineGrained> fgs = cv::saliency::StaticSaliencyFineGrained::create();
cv::Mat fgs_saliency_map;
fgs->computeSaliency(src_img, fgs_saliency_map);
cv::namedWindow("FGS saliency map", CV_WND_PROP_ASPECTRATIO);
cv::imshow("FGS saliency map", fgs_saliency_map);
cv::Mat binary_map;
cv::threshold(fgs_saliency_map, binary_map, 0, 255, CV_THRESH_OTSU);
cv::namedWindow("binary map", CV_WND_PROP_ASPECTRATIO);
cv::imshow("binary map", binary_map);
}
void SRTest()
{
cv::Mat src_img = cv::imread("../data/true.png", CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
cv::namedWindow("src_img", CV_WND_PROP_ASPECTRATIO);
cv::imshow("src_img", src_img);
if (src_img.empty())
exit(-1);
if (src_img.channels() == 3)
cv::cvtColor(src_img, src_img, CV_BGR2GRAY);
cv::Ptr<cv::saliency::StaticSaliencySpectralResidual> sr = cv::saliency::StaticSaliencySpectralResidual::create();
cv::Mat sr_saliency_map;
sr->computeSaliency(src_img, sr_saliency_map);
cv::namedWindow("SR saliency map", CV_WND_PROP_ASPECTRATIO);
cv::imshow("SR saliency map", sr_saliency_map);
cv::Mat binary_map;
sr->computeBinaryMap(sr_saliency_map, binary_map);
cv::namedWindow("binary map", CV_WND_PROP_ASPECTRATIO);
cv::imshow("binary map", binary_map);
}
int main(int argc, char *argv[])
{
SRTest();
while (cv::waitKey(0) != 27) { }
return 0;
}
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