diff --git a/src/main.cpp b/src/main.cpp
index b94459e..f5076ff 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -38,7 +38,30 @@ QSlider* iterationsSlider;
 
 void updateDenoisedImage()
 {
-  
+    std::string inputImagePath = inputImagePathEdit->text().toStdString();
+    std::string outputImagePath = outputImagePathEdit->text().toStdString();
+    float lambda = lambdaSlider->value() / 100.0;
+    int iterations = iterationsSlider->value();
+
+    // Read the input image
+    cv::Mat image = cv::imread(inputImagePath, cv::IMREAD_GRAYSCALE);
+
+    // Check if the image was successfully loaded
+    if (image.empty())
+    {
+        QMessageBox::critical(nullptr, "Error", "Failed to read the input image.");
+        return;
+    }
+
+    // Perform TV denoising
+    TVDenoising(image, lambda, iterations);
+
+    // Display the denoised image
+    QImage resultImage(image.data, image.cols, image.rows, QImage::Format_Grayscale8);
+    resultImageLabel->setPixmap(QPixmap::fromImage(resultImage));
+
+    // Save the denoised image
+    cv::imwrite(outputImagePath, image);
 }
 
 void openInputImage()