before ora4

ora2/main.cpp

@@ -15,7 +15,7 @@ int main(){
     Mat d = Scalar(255, 255, 255) - img; //invertalas //bgr formatum
     imshow("k", d);
 
-
+    //ha egy kepnek modositani akarom a fejlecet akkor referenciakent kell atadni a fv-nek
 
     
 

ora2/main3.cpp

@@ -0,0 +1,32 @@
+#include <opencv2/core.hpp>
+#include <opencv2/highgui.hpp>
+#include <opencv2/imgproc.hpp>
+#include <iostream>
+
+using namespace cv;
+
+int main(){
+    Mat bg = imread("background.jpg", IMREAD_COLOR);
+    Mat fg = imread("kurama.jpg", IMREAD_COLOR);
+
+    if(bg.empty() || fg.empty()){
+        std::cout << "az egyik kep ures" << std::endl;
+    }
+
+    resize(bg, bg, fg.size()); //bg atmeretezese az fg meretere
+    Mat u = fg.clone();
+    namedWindow("u", WINDOW_NORMAL);
+    imshow("u", u);
+    
+    int value = 50;
+    createTrackbar("alfa", "u", &value, 100);
+
+    while(waitKey(1) != 'q'){
+        double a = value / 100.0; //0.5; //alpha, eloter vagy hatter latszodjon jobban
+        Mat u = a * bg + (1-a) * fg;
+        imshow("u", u);
+    }
+    
+    waitKey();
+    return 0;
+}

ora2/main4.cpp

@@ -0,0 +1,47 @@
+#include <algorithm>
+#include <opencv2/core.hpp>
+#include <opencv2/highgui.hpp>
+#include <opencv2/imgproc.hpp>
+#include <iostream>
+
+using namespace cv;
+
+int main(){
+    Mat_<Vec3b> img = imread("kurama.jpg", IMREAD_COLOR); //ha itt meg van adva a templatebe a tipus akkor kesobb nem kella
+
+    //feher pontokat feketere:
+    //grayscale
+    /*for(int i = 0; i < img.rows; i++){
+        for(int j = 0; j < img.cols; j++){
+            if(img.at<uchar>(i,j) > 230){
+                img.at<uchar>(i,j) = 0;
+            }
+        }
+    }*/
+
+    Vec3b white(255,255,255);
+    Vec3b black(0,0,0);
+
+    for(int i = 0; i < img.rows; i++){
+        for(int j = 0; j < img.cols; j++){
+            /*if(img.at<Vec3b>(i,j)[0] > 230){ //[] melyik szin csatorna (bgr)
+                img.at<Vec3b>(i,j) = black;
+            }*/
+            //if(img(i,j)[0] > 230){
+              //  img(i,j) = black;
+            //}
+        }
+    }
+
+    for(auto &p : img){
+        //csak akkor kell referencia ha modositani akarjuk
+        if(p[0] > 230){
+            p = black;
+        }
+    }
+
+    imshow("img", img);
+
+    waitKey();
+    return 0;
+}

ora2/main5.cpp

@@ -0,0 +1,25 @@
+#include <algorithm>
+#include <opencv2/core.hpp>
+#include <opencv2/highgui.hpp>
+#include <opencv2/imgproc.hpp>
+#include <iostream>
+
+using namespace cv;
+
+int main(){
+    Mat_<Vec3b> orange = imread("orange1.jpg", IMREAD_COLOR);
+
+    Vec3b black = Vec3b(0,0,0);
+    for(int i = 0; i < orange.rows; i++){
+        for(int j = 0; j < orange.cols; j++){
+            if(orange(i,j)[2] < 164 && !(orange(i,j)[1] < orange(i,j)[2])){
+                orange(i,j) = black;
+            }
+        }
+    }
+
+    imshow("img", orange);
+
+    waitKey();
+    return 0;
+}