■ Bitmap 클래스를 사용해 색상을 대체하는 방법을 보여준다.
▶ ColorSubstitutionFilter.cs
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using System.Drawing; namespace TestProject { /// <summary> /// 색상 대체 필터 /// </summary> public class ColorSubstitutionFilter { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 임계치 값 /// </summary> private int thresholdValue = 10; /// <summary> /// 소스 색상 /// </summary> private Color sourceColor = Color.White; /// <summary> /// 타겟 색상 /// </summary> private Color targetColor = Color.White; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 임계치 값 - ThresholdValue /// <summary> /// 임계치 값 /// </summary> public int ThresholdValue { get { return this.thresholdValue; } set { this.thresholdValue = value; } } #endregion #region 소스 색상 - SourceColor /// <summary> /// 소스 색상 /// </summary> public Color SourceColor { get { return this.sourceColor; } set { this.sourceColor = value; } } #endregion #region 타겟 색상 - TargetColor /// <summary> /// 타겟 색상 /// </summary> public Color TargetColor { get { return this.targetColor; } set { this.targetColor = value; } } #endregion } } |
▶ BitmapHelper.cs
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using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Runtime.InteropServices; namespace TestProject { /// <summary> /// 비트맵 헬퍼 /// </summary> public static class BitmapHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 비트맵 구하기 - GetBitmap(sourceBitmap) /// <summary> /// 비트맵 구하기 /// </summary> /// <param name="sourceBitmap">소스 비트맵</param> /// <returns>비트맵</returns> public static Bitmap GetBitmap(Bitmap sourceBitmap) { Bitmap targetBitmap = new Bitmap(sourceBitmap.Width, sourceBitmap.Height, PixelFormat.Format32bppArgb); using(Graphics graphics = Graphics.FromImage(targetBitmap)) { graphics.CompositingQuality = CompositingQuality.HighQuality; graphics.InterpolationMode = InterpolationMode.HighQualityBicubic; graphics.PixelOffsetMode = PixelOffsetMode.HighQuality; graphics.SmoothingMode = SmoothingMode.HighQuality; graphics.DrawImage ( sourceBitmap, new Rectangle(0, 0, sourceBitmap.Width, sourceBitmap.Height), new Rectangle(0, 0, sourceBitmap.Width, sourceBitmap.Height), GraphicsUnit.Pixel ); } return targetBitmap; } #endregion #region 색상 대체하기 - SubstituteColor(sourceBitmap, colorSubstitutionFilter) /// <summary> /// 색상 대체하기 /// </summary> /// <param name="sourceBitmap">소스 비트맵</param> /// <param name="colorSubstitutionFilter">색상 대체 필터</param> /// <returns>비트맵</returns> public static Bitmap SubstituteColor(Bitmap sourceBitmap, ColorSubstitutionFilter colorSubstitutionFilter) { BitmapData sourceBitmapData = sourceBitmap.LockBits ( new Rectangle(0, 0, sourceBitmap.Width, sourceBitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb ); Bitmap targetBitmap = new Bitmap ( sourceBitmap.Width, sourceBitmap.Height, PixelFormat.Format32bppArgb ); BitmapData targetBitmapData = targetBitmap.LockBits ( new Rectangle(0, 0, targetBitmap.Width, targetBitmap.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb ); byte[] targetByteArray = new byte[targetBitmapData.Stride * targetBitmapData.Height]; Marshal.Copy(sourceBitmapData.Scan0, targetByteArray, 0, targetByteArray.Length); sourceBitmap.UnlockBits(sourceBitmapData); byte sourceRed = 0; byte sourceGreen = 0; byte sourceBlue = 0; byte sourceAlpha = 0; int targetRed = 0; int targetGreen = 0; int targetBlue = 0; byte newRedValue = colorSubstitutionFilter.TargetColor.R; byte newGreenValue = colorSubstitutionFilter.TargetColor.G; byte newBlueValue = colorSubstitutionFilter.TargetColor.B; byte redFilter = colorSubstitutionFilter.SourceColor.R; byte greenFilter = colorSubstitutionFilter.SourceColor.G; byte blueFilter = colorSubstitutionFilter.SourceColor.B; byte minimumValue = 0; byte maximumValue = 255; for(int k = 0; k < targetByteArray.Length; k += 4) { sourceAlpha = targetByteArray[k + 3]; if(sourceAlpha != 0) { sourceBlue = targetByteArray[k ]; sourceGreen = targetByteArray[k + 1]; sourceRed = targetByteArray[k + 2]; if ( (sourceBlue < blueFilter + colorSubstitutionFilter.ThresholdValue && sourceBlue > blueFilter - colorSubstitutionFilter.ThresholdValue) && (sourceGreen < greenFilter + colorSubstitutionFilter.ThresholdValue && sourceGreen > greenFilter - colorSubstitutionFilter.ThresholdValue) && (sourceRed < redFilter + colorSubstitutionFilter.ThresholdValue && sourceRed > redFilter - colorSubstitutionFilter.ThresholdValue) ) { targetBlue = blueFilter - sourceBlue + newBlueValue; if(targetBlue > maximumValue) { targetBlue = maximumValue; } else if(targetBlue < minimumValue) { targetBlue = minimumValue; } targetGreen = greenFilter - sourceGreen + newGreenValue; if(targetGreen > maximumValue) { targetGreen = maximumValue; } else if(targetGreen < minimumValue) { targetGreen = minimumValue; } targetRed = redFilter - sourceRed + newRedValue; if(targetRed > maximumValue) { targetRed = maximumValue; } else if(targetRed < minimumValue) { targetRed = minimumValue; } targetByteArray[k ] = (byte)targetBlue; targetByteArray[k + 1] = (byte)targetGreen; targetByteArray[k + 2] = (byte)targetRed; targetByteArray[k + 3] = sourceAlpha; } } } Marshal.Copy(targetByteArray, 0, targetBitmapData.Scan0, targetByteArray.Length); targetBitmap.UnlockBits(targetBitmapData); return targetBitmap; } #endregion } } |
▶ MainForm.cs
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using System; using System.Drawing; using System.Drawing.Imaging; using System.IO; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 색상 대체 필터 /// </summary> private ColorSubstitutionFilter filter = new ColorSubstitutionFilter(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Consructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.sourcePictureBox.MouseUp += pictureBox_MouseUp; this.targetPictureBox.MouseUp += pictureBox_MouseUp; this.thresholdTrackBar.ValueChanged += thresholdTrackBar_ValueChanged; this.selectSourceColorButton.Click += selectColorButton_Click; this.selectReplacementColorButton.Click += selectColorButton_Click; this.loadImageButton.Click += loadImageButton_Click; this.saveImageButton.Click += saveImageButton_Click; this.setSourceButton.Click += setSourceButton_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 픽처 박스 마우스 UP 처리하기 - pictureBox_MouseUp(sender, e) /// <summary> /// 픽처 박스 마우스 UP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_MouseUp(object sender, MouseEventArgs e) { if(sender is PictureBox) { PictureBox pictureBox = sender as PictureBox; using(Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height)) { this.sourcePictureBox.DrawToBitmap(bitmap, new Rectangle(0, 0, pictureBox.Width, pictureBox.Height)); this.sourceColorPanel.BackColor = bitmap.GetPixel(e.X, e.Y); } ApplyFilter(); } } #endregion #region 임계치 트랙바 값 변경시 처리하기 - thresholdTrackBar_ValueChanged(sender, e) /// <summary> /// 임계치 트랙바 값 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void thresholdTrackBar_ValueChanged(object sender, EventArgs e) { this.thresholdValueLabel.Text = this.thresholdTrackBar.Value.ToString() + "%"; ApplyFilter(); } #endregion #region 색상 선택 버튼 클릭시 처리하기 - selectColorButton_Click(sender, e) /// <summary> /// 색상 선택 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void selectColorButton_Click(object sender, EventArgs e) { using(ColorDialog colorDialog = new ColorDialog()) { colorDialog.AllowFullOpen = true; colorDialog.AnyColor = true; colorDialog.FullOpen = true; if(sender == this.selectSourceColorButton) { colorDialog.Color = this.sourceColorPanel.BackColor; } else if(sender == this.selectReplacementColorButton) { colorDialog.Color = this.replacementColorPanel.BackColor; } if(colorDialog.ShowDialog() == DialogResult.OK) { if(sender == this.selectSourceColorButton) { this.sourceColorPanel.BackColor = colorDialog.Color; } else if(sender == this.selectReplacementColorButton) { this.replacementColorPanel.BackColor = colorDialog.Color; } ApplyFilter(); } } } #endregion #region 이미지 로드 버튼 클릭시 처리하기 - loadImageButton_Click(sender, e) /// <summary> /// 이미지 로드 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void loadImageButton_Click(object sender, EventArgs e) { OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Title = "이미지 파일 선택"; openFileDialog.Filter = "JPEG 이미지(*.jpg)|*.jpg|PNG 이미지(*.png)|*.png|비트맵 이미지(*.bmp)|*.bmp"; if(openFileDialog.ShowDialog() == DialogResult.OK) { StreamReader streamReader = new StreamReader(openFileDialog.FileName); Bitmap sourceBitmap = new Bitmap(streamReader.BaseStream); streamReader.Close(); this.sourcePictureBox.Image = BitmapHelper.GetBitmap(sourceBitmap); ApplyFilter(); } } #endregion #region 이미지 저장 버튼 클릭시 처리하기 - saveImageButton_Click(sender, e) /// <summary> /// 이미지 저장 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void saveImageButton_Click(object sender, EventArgs e) { if(this.targetPictureBox.Image != null) { SaveFileDialog saveFileDialog = new SaveFileDialog(); saveFileDialog.Title = "이미지 파일 선택"; saveFileDialog.Filter = "JPEG 이미지(*.jpg)|*.jpg|PNG 이미지(*.png)|*.png|비트맵 이미지(*.bmp)|*.bmp"; if(saveFileDialog.ShowDialog() == DialogResult.OK) { string fileExtension = Path.GetExtension(saveFileDialog.FileName).ToUpper(); ImageFormat imageFormat = ImageFormat.Png; if(fileExtension == "BMP") { imageFormat = ImageFormat.Bmp; } else if(fileExtension == "JPG") { imageFormat = ImageFormat.Jpeg; } StreamWriter streamWriter = new StreamWriter(saveFileDialog.FileName, false); this.targetPictureBox.Image.Save(streamWriter.BaseStream, imageFormat); streamWriter.Flush(); streamWriter.Close(); } } } #endregion #region 타겟을 소스로 설정 버튼 클릭시 처리하기 - setSourceButton_Click(sender, e) /// <summary> /// 타겟을 소스로 설정 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void setSourceButton_Click(object sender, EventArgs e) { Bitmap targetBitmap = this.targetPictureBox.Image as Bitmap; this.sourcePictureBox.Image = BitmapHelper.GetBitmap(targetBitmap); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 필터 적용하기 - ApplyFilter() /// <summary> /// 필터 적용하기 /// </summary> private void ApplyFilter() { if(this.sourcePictureBox.Image != null) { this.filter.SourceColor = this.sourceColorPanel.BackColor; this.filter.ThresholdValue = (byte)(255.0f / 100.0f * (float)this.thresholdTrackBar.Value); this.filter.TargetColor = this.replacementColorPanel.BackColor; Bitmap sourceBitmap = this.sourcePictureBox.Image as Bitmap; this.targetPictureBox.Image = BitmapHelper.SubstituteColor(sourceBitmap, filter); this.colorFilterPanel.Enabled = true; this.saveImageButton.Enabled = true; this.setSourceButton.Enabled = true; } } #endregion } } |
