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keogram.cpp
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keogram.cpp
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// Simple keogram composition program using OpenCV
// Copyright 2018 Jarno Paananen <jarno.paananen@gmail.com>
// Based on a script by Thomas Jacquin
// Rotation added by Agustin Nunez @agnunez
// SPDX-License-Identifier: MIT
#include <cstdlib>
#include <glob.h>
#include <iostream>
#include <string>
#include <sys/stat.h>
#include <vector>
#include <stdio.h>
#ifdef OPENCV_C_HEADERS
#include <opencv2/core/types_c.h>
#include <opencv2/highgui/highgui_c.h>
#include <opencv2/imgproc/imgproc_c.h>
#include <opencv2/imgcodecs/legacy/constants_c.h>
#endif
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/opencv.hpp>
#define KNRM "\x1B[0m"
#define KRED "\x1B[31m"
#define KGRN "\x1B[32m"
#define KYEL "\x1B[33m"
#define KBLU "\x1B[34m"
#define KMAG "\x1B[35m"
#define KCYN "\x1B[36m"
#define KWHT "\x1B[37m"
//-------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------
int main(int argc, char *argv[])
{
if (argc < 4)
{
std::cout << KRED << "You need to pass 3 arguments: source directory, "
"image extension, output file"
<< std::endl;
std::cout << "Optionally you can pass after them: " << std::endl;
std::cout << " -no-label - Disable hour labels" << std::endl;
std::cout << " -fontname = Font Name - Default = 0 - Font Types "
"(0-7), Ex. 0 = simplex, 4 = triplex, 7 = script"
<< std::endl;
std::cout << " -fontcolor = Font Color - Default = 255 0 0 - Text "
"blue (BRG)"
<< std::endl;
std::cout << " -fonttype = Font Type - Default = 8 - Font Line "
"Type,(0-2), 0 = AA, 1 = 8, 2 = 4"
<< std::endl;
std::cout << " -fontsize - Default = 2.0 - Text Font Size" << std::endl;
std::cout << " -fontline - Default = 3 - Text Font "
"Line Thickness"
<< std::endl;
std::cout << " -rotate - Default = 0 - Rotation angle anticlockwise (deg)" << std::endl;
std::cout << " ex: keogram ../images/current/ jpg keogram.jpg -fontsize 2" << std::endl;
std::cout << " ex: keogram . png /home/pi/allsky/keogram.jpg -no-label" << KNRM << std::endl;
return 3;
}
std::string directory = argv[1];
std::string extension = argv[2];
std::string outputfile = argv[3];
bool labelsEnabled = true;
int fontFace = cv::FONT_HERSHEY_SCRIPT_SIMPLEX;
double fontScale = 2;
int fontType = 8;
int thickness = 3;
unsigned char fontColor[3] = { 255, 0, 0 };
double angle = 0;
// Handle optional parameters
for (int a = 4; a < argc; ++a)
{
if (!strcmp(argv[a], "-no-label"))
{
labelsEnabled = false;
}
else if (!strcmp(argv[a], "-fontname"))
{
fontFace = atoi(argv[++a]);
}
else if (!strcmp(argv[a], "-fonttype"))
{
fontType = atoi(argv[++a]);
}
else if (!strcmp(argv[a], "-fontsize"))
{
fontScale = atof(argv[++a]);
}
else if (!strcmp(argv[a], "-fontline"))
{
thickness = atoi(argv[++a]);
}
else if (!strcmp(argv[a], "-fontcolor"))
{
fontColor[0] = atoi(argv[++a]);
fontColor[1] = atoi(argv[++a]);
fontColor[2] = atoi(argv[++a]);
}
else if (!strcmp(argv[a], "-rotate"))
{
angle = atoi(argv[++a]);
}
}
glob_t files;
std::string wildcard = directory + "/*." + extension;
glob(wildcard.c_str(), 0, NULL, &files);
if (files.gl_pathc == 0)
{
globfree(&files);
std::cout << "No images found, exiting." << std::endl;
return 0;
}
cv::Mat accumulated;
int prevHour = -1;
for (size_t f = 0; f < files.gl_pathc; f++)
{
cv::Mat imagesrc = cv::imread(files.gl_pathv[f], cv::IMREAD_UNCHANGED);
if (!imagesrc.data)
{
std::cout << "Error reading file " << basename(files.gl_pathv[f]) << std::endl;
continue;
}
std::cout << "[" << f + 1 << "/" << files.gl_pathc << "] " << basename(files.gl_pathv[f]) << std::endl;
//double angle = -36;
cv::Point2f center((imagesrc.cols-1)/2.0, (imagesrc.rows-1)/2.0);
cv::Mat rot = cv::getRotationMatrix2D(center, angle, 1.0);
cv::Rect2f bbox = cv::RotatedRect(cv::Point2f(), imagesrc.size(), angle).boundingRect2f();
rot.at<double>(0,2) += bbox.width/2.0 - imagesrc.cols/2.0;
rot.at<double>(1,2) += bbox.height/2.0 - imagesrc.rows/2.0;
cv::Mat imagedst;
cv::warpAffine(imagesrc, imagedst, rot, bbox.size());
if (accumulated.empty())
{
accumulated.create(imagedst.rows, files.gl_pathc, imagesrc.type());
}
// Copy middle column to destination
imagedst.col(imagedst.cols / 2).copyTo(accumulated.col(f));
if (labelsEnabled)
{
struct stat s;
stat(files.gl_pathv[f], &s);
struct tm *t = localtime(&s.st_mtime);
if (t->tm_hour != prevHour)
{
if (prevHour != -1)
{
// Draw a dashed line and label for hour
cv::LineIterator it(accumulated, cv::Point(f, 0), cv::Point(f, accumulated.rows));
for (int i = 0; i < it.count; i++, ++it)
{
// 4 pixel dashed line
if (i & 4)
{
uchar *p = *it;
for (int c = 0; c < it.elemSize; c++)
{
*p = ~(*p);
p++;
}
}
}
// Draw text label to the left of the dash
char hour[3];
snprintf(hour, 3, "%02d", t->tm_hour);
std::string text(hour);
int baseline = 0;
cv::Size textSize = cv::getTextSize(text, fontFace, fontScale, thickness, &baseline);
if (f - textSize.width >= 0)
{
cv::putText(accumulated, text,
cv::Point(f - textSize.width, accumulated.rows - textSize.height), fontFace,
fontScale, cv::Scalar(fontColor[0], fontColor[1], fontColor[2]), thickness,
fontType);
}
}
prevHour = t->tm_hour;
}
}
}
globfree(&files);
std::vector<int> compression_params;
compression_params.push_back(CV_IMWRITE_PNG_COMPRESSION);
compression_params.push_back(9);
compression_params.push_back(CV_IMWRITE_JPEG_QUALITY);
compression_params.push_back(95);
cv::imwrite(outputfile, accumulated, compression_params);
}