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#include "imageutil.hpp"
#include <cstdio>
#include <string>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>
int main(int argc, char** argv)
{
if (argc < 2)
{
printf("usage: %s <image file>\n", argv[0]);
return 1;
}
cv::Mat i = cv::imread(argv[1], cv::IMREAD_UNCHANGED);
if (i.data == NULL)
{
printf("invalid image.\n");
return 1;
}
cv::Mat fi, bw;
double sc = 1;
switch (i.depth())
{
case CV_8U: sc = 1. / 255; break;
case CV_16U: sc = 1. / 65535; break;
}
i.convertTo(fi, CV_32F, sc);
if (fi.channels() == 4)
fi = image_util::blend_white(fi);
cv::cvtColor(fi, bw, cv::COLOR_RGB2GRAY);
cv::imshow(std::string("test"), bw);
cv::Range xr, yr;
double contrast_threshold = 0.05;
double max_crop_ratio = 0.25;
xr = image_util::crop_axis(bw, 0, contrast_threshold, max_crop_ratio);
yr = image_util::crop_axis(bw, 1, contrast_threshold, max_crop_ratio);
cv::Mat cfi = image_util::crop(bw, contrast_threshold, max_crop_ratio);
cv::imshow(std::string("cropped"), cfi);
printf("xxx [%d, %d) [%d, %d)\n", yr.start, yr.end, xr.start, xr.end);
puts("press q to quit.");
while (cv::waitKey(0) != 'q');
return 0;
}
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