Addition of face swap in existing repository

4_cv_basics/10_face_swap/Makefile

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+# Specifying which compiler to use
+CC = g++
+
+# Defining the name of the object that will be created after using make
+PROJECT = image_segmentation
+
+# Include directories and compiler flags
+CFLAGS = -std=c++11 $(shell pkg-config --cflags opencv4) -Iinclude/
+
+# Linker flags for OpenCV
+LIBS = $(shell pkg-config --libs opencv4)
+
+# Check if link is set
+ifeq ($(SRC), $(link),)
+build:
+	$(error "SRC is not set")
+else
+build:
+	@echo "Building..."
+	@$(CC) $(SRC) $(link) -o $(PROJECT) $(CFLAGS) $(LIBS)
+endif	
+
+# if folder is not set, clean all build files all subfolders
+.PHONY: clean
+clean:
+	@echo "Cleaning..."
+	@rm -rf $(PROJECT)

4_cv_basics/10_face_swap/README.md

@@ -0,0 +1,11 @@
+### Instructions for testing
+
+```
+make SRC=main.cpp link="src/segementation.cpp src/processing.cpp"\
+```
+then for running it 
+```
+
+./image_segmentation
+
+```

4_cv_basics/10_face_swap/include/processing.hpp

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+/* 
+MIT License
+
+Copyright (c) 2026 Society of Robotics and Automation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef PROCESSING_HPP
+#define PROCESSING_HPP
+
+#include "segmentation.hpp"
+#include <opencv2/imgproc.hpp>
+#include <opencv2/highgui.hpp>
+#include <string>
+
+cv::Mat segmentObject(ImageSegmenter& segmenter, const cv::Mat& image, const std::string& message);
+
+cv::Mat createMask(const cv::Mat& segmented);
+
+int kernel_sum(const cv::Mat& source_image, int row, int col, int kernel_size);
+
+cv::Mat erosion(cv::Mat source_image, cv::Mat output_image, int kernel_size);
+
+cv::Mat dilation(cv::Mat source_image, cv::Mat output_image, int kernel_size);
+
+cv::Mat smoothMask(const cv::Mat& inputMask);
+
+void extractForeground(const cv::Mat& image, const cv::Mat& mask, cv::Mat& foreground, cv::Mat& croppedMask, cv::Rect& boundingBox);
+
+void resizeObject(cv::Mat& object, cv::Mat& mask, const cv::Size& targetSize);
+
+cv::Mat removeOriginalObjects(const cv::Mat& image, const cv::Mat& mask1, const cv::Mat& mask2, const cv::Rect& r1, const cv::Rect& r2);
+
+void pasteSwappedObjects(cv::Mat& baseImage, const cv::Mat& fg1, const cv::Mat& fg2, const cv::Mat& m1, const cv::Mat& m2, const cv::Rect& r1, const cv::Rect& r2);
+
+#endif

4_cv_basics/10_face_swap/include/segmentation.hpp

@@ -0,0 +1,55 @@
+/*
+MIT License
+
+Copyright (c) 2023 Society of Robotics and Automation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+
+#ifndef SEGMENTATION_HPP
+#define SEGMENTATION_HPP
+
+#include <opencv2/opencv.hpp>
+
+class ImageSegmenter {
+public:
+    ImageSegmenter();
+
+    // GrabCut segmentation
+    void applyGrabCut(const cv::Mat& image, cv::Mat& output, const cv::Rect& roi = cv::Rect());
+
+    // Utility methods
+    cv::Rect selectROI(const cv::Mat& image);
+
+private:
+    // Mouse callback data
+    struct MouseData {
+        cv::Mat image;
+        cv::Rect roi;
+        bool isSelecting;
+    };
+
+    MouseData mouseData;
+
+    // Mouse callback function
+    static void onMouse(int event, int x, int y, int flags, void* userdata);
+};
+
+#endif // SEGMENTATION_HPP

4_cv_basics/10_face_swap/main.cpp

@@ -0,0 +1,98 @@
+
+/* 
+MIT License
+
+Copyright (c) 2026 Society of Robotics and Automation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "processing.hpp"
+#include <opencv2/imgcodecs.hpp>
+#include <iostream>
+#include <stdexcept>
+
+int main()
+{
+    try
+    {
+        cv::Mat image = cv::imread("assets/image1.png");
+        if (image.empty())
+            throw std::runtime_error("Could not load image");
+
+        ImageSegmenter segmenter;
+
+        cv::Mat fg1, fg2, m1, m2;
+        cv::Rect r1, r2;
+        cv::Mat mask1, mask2;
+
+        // Loop until valid segmentation for object 1
+        while (true)
+        {
+            try
+            {
+                cv::Mat segmented1 = segmentObject(segmenter, image, "Select first ROI and press any key...");//segment object and get segmented image
+                mask1 = smoothMask(createMask(segmented1)); //create mask and smooth it
+                extractForeground(image, mask1, fg1, m1, r1);//extract foreground, mask, and bounding box
+                break;
+            }
+            catch (const std::exception& e)
+            {
+                std::cerr << "First object segmentation failed: " << e.what() << ". Try again.\n";
+            }
+        }
+
+        // Loop until valid segmentation for object 2
+        while (true)
+        {
+            try
+            {
+                cv::Mat segmented2 = segmentObject(segmenter, image, "Select second ROI and press any key...");//segment object and get segmented image
+                mask2 = smoothMask(createMask(segmented2));// create mask and smooth it
+                extractForeground(image, mask2, fg2, m2, r2);//extract foreground, mask, and bounding box
+                break;
+            }
+            catch (const std::exception& e)
+            {
+                std::cerr << "Second object segmentation failed: " << e.what() << ". Try again.\n";
+            }
+        }
+
+        resizeObject(fg1, m1, r2.size());//resize foreground and mask of object 1 to match size of object 2
+        resizeObject(fg2, m2, r1.size());//resize foreground and mask of object 2 to match size of object 1
+
+        cv::Mat swapped = removeOriginalObjects(image, mask1, mask2, r1, r2);//remove original objects from the image and get the base for swapping
+
+        pasteSwappedObjects(swapped, fg1, fg2, m1, m2, r1, r2);//paste the swapped objects onto the base image
+
+        cv::imshow("Original", image);//  show the original image
+        cv::imshow("Segmented SWAP", swapped);//show the swaped image
+        cv::waitKey(0);
+        cv::destroyAllWindows();
+
+        std::cout << "Object swap completed successfully. Exiting..." << std::endl;
+    }
+    catch (const std::exception& e)
+    {
+        std::cerr << "Error: " << e.what() << std::endl;
+        return -1;
+    }
+
+    return 0;
+}