GDI+自己畫圖如何建立CMYK.Tif 图档(CMYK的模式)

[weboscar]

  while ( 答案 == false) 
        {
            Console.WriteLine("Help~~请求高手帮忙指导!");            
        }

今天Google 一天都找不到解决办法，请求高手帮忙指导～
我只能存成RGB模式，到底要怎样才行存成CMYK模式呢?求解

        private void button1_Click(object sender, EventArgs e)
        {            
            using (Bitmap bmp = new Bitmap(@"RGB.jpg"))
            {
                int bmpW = bmp.Width;
                int bmpH = bmp.Height;               
                byte[] RawBuff = null ;
              
                Bitmap tmpBmp = new Bitmap(bmp.Width, bmp.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb );
                Graphics g = Graphics.FromImage(tmpBmp);   

                for (int y = 0; y < bmpH; y++)
                {
                    for (int x= 0; x < bmpW; x++)
                    {
                        Color c = bmp.GetPixel(x, y);
                        RawBuff = RGBToCMY(c.R, c.G, c.B);
                        tmpBmp.SetPixel(x, y, System.Drawing.Color.FromArgb(255,RawBuff[0], RawBuff[1], RawBuff[2]));
                    }
                }                
                tmpBmp.Save(@"CMYK.tif", System.Drawing.Imaging.ImageFormat.Tiff );
            }
        }

[weboscar]

Help~~~~~~~~~~~~~~~~~~~~

[weboscar]

好像真的无法生成 CMYK.Tif 的挡案，难道真的RGB无法转成CMY (K我要放一些我的文字注解)，一定要CMYK色彩，昨天又想了~或许用第三方元件输出PDF合并檔不知道可行吗?请有这方面经验的前辈帮个忙~

[weboscar]

查到了这样一个写法~但这个是将RGB的图转换成CMYK存檔，这各无法满足我啊~救救我!
我是希望将RGB转成CMY之后再自己添加K的图形之后再存成CMYK.tif

	Stream imageStream = new FileStream(@"C:\temp\mike4.jpg", FileMode.Open, FileAccess.Read, FileShare.Read);
    BitmapSource myBitmapSource = BitmapFrame.Create(imageStream);
    FormatConvertedBitmap newFormatedBitmapSource = new FormatConvertedBitmap();
    newFormatedBitmapSource.BeginInit();
    newFormatedBitmapSource.Source = myBitmapSource;
    newFormatedBitmapSource.DestinationFormat = PixelFormats.Cmyk32;
    newFormatedBitmapSource.EndInit();

    BitmapEncoder encoder = new TiffBitmapEncoder();
    encoder.Frames.Add(BitmapFrame.Create(newFormatedBitmapSource));

    Stream cmykStream = new FileStream(@"C:\temp\mike4_CMYK.tif",

    FileMode.Create, FileAccess.Write, FileShare.Write);
    encoder.Save(cmykStream);
    cmykStream.Close();

[Tyrone_XU]

LibTiff.Net

[qq825129090]

兄台,这个cmyk的PDF找到答案了吗?