흔한개발자

C#을 사용하여 임계값을 주어서 그 값을 상대로 그림을 변환시킵니다.



<<소스>>
OpenFileDialog openFile = new OpenFileDialog();
            openFile.Filter = "All files(*.*)|*.*|jpg(*.jpg)|*.jpg";
            openFile.ShowDialog();

            if (openFile.FileName.Length > 0)
            {
                 Image image = Image.FromFile(openFile.FileName);
                 pictureBox1.Image = image;
                 gBitmap = new Bitmap(image);
                 grBitmap = new Bitmap(image.Width, image.Height);
                 arr = new int[image.Height, image.Width];
                 arr1 = new int[image.Height, image.Width];
                for (int y = 0; y < image.Height; y++)
                 {
                     for (int x = 0; x < image.Width; x++)
                    {
                    //RGB
                         m_color = gBitmap.GetPixel(x, y);
                         brightness = (m_color.R + m_color.G + m_color.B) / 3;
                         arr[y, x] = brightness;
                     }
                 }
                for (int y = 0; y < image.Height; y++)
                {
                    for (int x = 0; x < image.Width; x++)                    
                         if (100 < arr[y, x])//임계치 100
                         {//임계값보다 높으면 255
                             arr1[y, x] = 255;
                         }
                         else
                         {//임계값보다 낮으면 0
                             arr1[y, x] = 0;
                         }
                 }
                 for (int x = 0; x < image.Width; x++)
                 {
                     for (int y = 0; y < image.Height; y++)
                     {
                         //넣어주기
                         gray = Color.FromArgb(arr1[y, x], arr1[y, x], arr1[y, x]);
                         grBitmap.SetPixel(x, y, gray);
                     }
                 }

                 pictureBox2.Image = grBitmap;

             }

아 어려워잉.,.,ㅜㅜ