feature_change_position

sample_mahnev/CMakeLists.txt

@@ -0,0 +1,7 @@
+set(target "sample_mahnev") 
+
+file(GLOB hdrs "*.hpp")
+file(GLOB srcs "*.cpp")
+
+add_executable(${target} ${srcs} ${hdrs})
+target_link_libraries(${target} ${LIBRARY_DEPS})

sample_mahnev/application.cpp

@@ -0,0 +1,123 @@
+#include "application.hpp"
+#include "processing.hpp"
+
+#include <opencv2/highgui/highgui.hpp>
+
+using namespace cv;
+
+int Application::parseArguments(int argc, const char **argv, 
+        Application::Parameters &params)
+{
+    if (argc < 2)
+    {
+        return 1;
+    }
+    params.imgFileName = std::string(argv[1]);
+    return 0;
+}
+
+int Application::getFrame(const std::string &fileName, Mat& src)
+{
+    src = imread(fileName);
+    if (src.empty())
+    {
+        return 1;
+    }
+    return 0;
+}
+
+int Application::processFrame(const Mat& src, Mat& dst)
+{
+    processor.processFrame(src, dst);
+
+    if (dst.empty())
+    {
+        return 1;
+    }
+
+    return 0;
+}
+
+int Application::drawButtons(Mat &display)
+{
+    guiState.onButtonPlace = Rect(20, display.rows - 60, 120, 40);
+    guiState.offButtonPlace = Rect(160, display.rows - 60, 120, 40);
+    rectangle(display, guiState.onButtonPlace, 
+              Scalar(128, 128, 128), CV_FILLED);
+    rectangle(display, guiState.offButtonPlace, 
+              Scalar(128, 128, 128), CV_FILLED);
+
+    putText(display, "on", 
+        Point(guiState.onButtonPlace.x + guiState.onButtonPlace.width / 2 - 15,
+              guiState.onButtonPlace.y + guiState.onButtonPlace.height / 2 + 10),
+        FONT_HERSHEY_SIMPLEX, 1.0, Scalar(0, 0, 0), 2);
+    putText(display, "off", 
+        Point(guiState.offButtonPlace.x + guiState.offButtonPlace.width / 2 - 20,
+              guiState.offButtonPlace.y + guiState.offButtonPlace.height / 2 + 10),
+        FONT_HERSHEY_SIMPLEX, 1.0, Scalar(0, 0, 0), 2);
+
+    return 0;
+}
+
+int Application::showFrame(const std::string &caption, 
+        const Mat& src, Mat& dst)
+{
+    if (guiState.state == OffFilter)
+    {
+        src.copyTo(dst);
+    }
+    else if (guiState.state == OnFilter)
+    {
+        processFrame(src, dst);
+    }
+    else
+    {
+        return 1;
+    }
+
+    Mat display(src.rows, src.cols + dst.cols, src.type());
+    Mat srcRoi = display(Rect(0, 0, src.cols, src.rows));
+    src.copyTo(srcRoi);
+    Mat dstRoi = display(Rect(src.cols, 0, dst.cols, dst.rows));
+    dst.copyTo(dstRoi);       
+
+    drawButtons(display);
+
+    namedWindow(caption);  
+    imshow(caption, display);
+    setMouseCallback(caption, onButtonsOnOffClick, &guiState);
+    char key = waitKey(1);
+
+    return key;
+}
+
+void onButtonsOnOffClick(int eventId, int x, int y, int flags, void *userData)
+{
+    if (eventId != EVENT_LBUTTONDOWN)
+    {
+        return;
+    }
+    Application::GUIElementsState *elems = 
+        (Application::GUIElementsState *)userData;
+    if (onButtonClicked(elems->onButtonPlace, x, y))
+    {
+        elems->state = Application::OnFilter;
+        return;
+    }
+    if (onButtonClicked(elems->offButtonPlace, x, y))
+    {
+        elems->state = Application::OffFilter;
+        return;
+    }
+}
+
+bool onButtonClicked(cv::Rect buttonPlace, int x, int y)
+{
+    if (x < buttonPlace.x || x > buttonPlace.x + buttonPlace.width ||
+        y < buttonPlace.y || y > buttonPlace.y + buttonPlace.height)
+    {
+        return false;
+    }
+    return true;
+}
+

sample_mahnev/application.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <string>
+#include <iostream>
+#include <opencv2/core/core.hpp>
+
+#include "processing.hpp"
+
+bool onButtonClicked(cv::Rect buttonPlace, int x, int y);
+void onButtonsOnOffClick(int eventId, int x, int y, int flags, void *userData);
+
+class Application
+{
+ public:
+    enum WindowState
+    {
+        OnFilter,
+        OffFilter
+    };
+    struct Parameters
+    {
+        std::string imgFileName;
+    };
+    struct GUIElementsState
+    {
+        WindowState state;
+        cv::Rect onButtonPlace;
+        cv::Rect offButtonPlace;
+    };
+    int parseArguments(int argc, const char **argv, Parameters &params);
+    int getFrame(const std::string &fileName, cv::Mat& src);
+    int processFrame(const cv::Mat& src, cv::Mat& dst);
+    int showFrame(const std::string &caption, 
+                  const cv::Mat& src, cv::Mat& dst);
+    friend void onButtonsOnOffClick(int eventId, int x, int y, 
+                                    int flags, void *userData);
+    Application() 
+    { 
+        guiState.state = OnFilter;
+    };
+
+ private:
+    Processing processor;
+    GUIElementsState guiState;
+
+    int drawButtons(cv::Mat &display);
+
+    friend bool onButtonClicked(cv::Rect buttonPlace, int x, int y);
+};

sample_mahnev/main.cpp

@@ -0,0 +1,46 @@
+#include <opencv2/core/core.hpp>
+#include <iostream>
+
+#include "application.hpp"
+
+using namespace std;
+using namespace cv;
+
+enum ErrorCode {
+    OK,
+    WRONG_ARGUMENTS,
+    WRONG_INPUT,
+    CANT_PROCESS
+};
+
+int main(int argc, const char **argv)
+{
+    Application app;
+    Application::Parameters params;
+
+
+    if (app.parseArguments(argc, argv, params) != 0)
+    {
+        cout << "sample_template <image_name>" << endl;
+        cout << "<image_name> - image name for filtering" << endl;
+        return WRONG_ARGUMENTS;
+    }
+
+    Mat src;
+    if (app.getFrame(params.imgFileName, src) != 0)
+    {
+        cout << "Error: \'src\' image is null or empty!" << endl;
+        return WRONG_INPUT;
+    }
+
+    const std::string caption = "OpenCV Sample";
+    char key = 0;
+    Mat dst(src.rows, src.cols, src.type());
+    while (key != 27) // Esc
+    {
+
+        key = app.showFrame(caption, src, dst);
+    }
+
+	return OK;
+}

sample_mahnev/processing.cpp

@@ -0,0 +1,21 @@
+#include "processing.hpp"
+#include <cstdlib>
+#include <opencv2/imgproc/imgproc.hpp>
+#include <ctime> 
+using namespace cv;
+
+void Processing::processFrame(const cv::Mat& src, cv::Mat& dst)
+{
+	srand(time(NULL));
+    src.copyTo(dst);
+	int line = rand() % src.rows / 2;
+	int point = rand() % src.cols / 2;
+
+    cv::Rect region( line, point, src.rows/2, src.cols/2);
+    Mat roi = dst(region);
+
+    const int kSize = 11;
+    medianBlur(roi, roi, kSize);
+
+    rectangle(dst, region, Scalar(255, 0, 0));
+}

sample_mahnev/processing.hpp

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <opencv2/core/core.hpp>
+
+class Processing
+{
+ public:
+    void processFrame(const cv::Mat& src, cv::Mat& dst);
+};