Tiff image convert is not work in the following pixel in my code?RSS

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  rajkumar.mca...

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  Tiff image convert is not work in the following pixel in my code?

  Jun 12, 2014 09:54 AM|rajkumar.mca.bhc|LINK

  I have doubts following things
  1.Tiff image convert to Bitmap.
  Bitmap Pixel Format is the following
  Format32bppRgb
  Format32bppPArgb
  Format32bppArgb
  Format48bppRgb

  System.Drawing.Bitmap _selectedImage;
  //// Retrieve the image.
  _selectedImage = new Bitmap(linkstirng, true);
  byte[] direct = GetRawBytesFromBmp(_selectedImage);

  I have put my method code

  Format24bppRgb working fine.but the following format not works please give and idea.

  Format32bppRgb
  Format32bppPArgb
  Format32bppArgb
  Format48bppRgb

  ///
  /// Gives the Byte array for bmp data.
  ///
  ///
  ///
  private byte[] GetRawBytesFromBmp(Bitmap bmp)
  {
  /// Here byte of Array declare
  byte[] raw;
  int row, column;
  //Bitmap width
  int width = bmp.Width;

  //Bitmap Height
  int height = bmp.Height;
  if (height % 2 != 0 && width % 2 != 0)
  {
  width–;
  }
  /*——————————————————–
  BitmapData data = image.LockBits(new Rectangle(0, 0, columns, rows), ImageLockMode.ReadOnly, image.PixelFormat);
  IntPtr bmpData = data.Scan0;
  int stride = columns*3;
  int size = rows*stride;

  byte[] pixelData = new byte[size];

  for (int i = 0; i < rows; ++i)
  Marshal.Copy((new IntPtr(bmpData.ToInt64() + i*data.Stride), pixelData, i*stride, stride);
  ——————————————————————————————————*/

  int bmpStride = 0;
  int rawStride = 0;
  int BytesPerPixel = 0;
  BitmapData data = null;
  try
  {
  //Lock the bitmap so we can access the raw pixel data
  data = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, bmp.PixelFormat);
  bmpStride = data.Stride;
  if (bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format24bppRgb || bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format8bppIndexed || bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format48bppRgb)
  {
  BytesPerPixel = System.Drawing.Image.GetPixelFormatSize(bmp.PixelFormat) / 8;
  rawStride = BytesPerPixel * width;
  }
  else if (bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format32bppRgb)
  {

  BytesPerPixel = System.Drawing.Image.GetPixelFormatSize(bmp.PixelFormat) / 8;
  rawStride = BytesPerPixel * width;

  }
  else
  {

  return null;
  }

  raw = new byte[rawStride * height];
  unsafe
  {
  if (bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format24bppRgb)
  {
  byte* bmpPtr = (byte*)data.Scan0.ToPointer();

  fixed (byte* rawPtr = raw)
  if (bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format24bppRgb)
  {
  //the pixels row by row
  for (row = 0; row < height; ++row)
  {
  // iterate over width (columns)
  for (column = 0; column < rawStride; column += BytesPerPixel)
  {

  rawPtr[row * rawStride + column] = bmpPtr[row * bmpStride + column + 2]; //b
  rawPtr[row * rawStride + column + 1] = bmpPtr[row * bmpStride + column + 1]; //g
  rawPtr[row * rawStride + column + 2] = bmpPtr[row * bmpStride + column]; ; //r
  }
  }

  }
  else if (bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format8bppIndexed)
  {
  //the pixels row by row
  for (row = 0; row < height; ++row)
  { // iterate over width (columns)
  for (column = 0; column < rawStride; column += BytesPerPixel)
  {
  rawPtr[row * rawStride + column] = bmpPtr[row * bmpStride + column]; //r
  }
  }
  }
  else if (bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format48bppRgb)
  {
  // the below code wont work please give any idea and above condition

  //the pixels row by row
  //for (int y = 0; y < height; y++)
  //{
  // for (int x = 0; x < width * BytesPerPixel; x += BytesPerPixel)
  // {
  // int i = y * width * BytesPerPixel + x;
  // // Blue and Green components
  // // always 0×00 since we are just
  // // interested in red
  // rawPtr[i] = 0×00;
  // rawPtr[i + 1] = 0×00;
  // rawPtr[i + 2] = 0×00;
  // rawPtr[i + 3] = 0×00;

  // if (x < columnWidth * BytesPerPixel)
  // {
  // //Left most column, full red
  // rawPtr[i + 4] = 0xFF;
  // rawPtr[i + 5] = 0xFF;
  // }
  // else if (x < columnWidth * BytesPerPixel * 2)
  // {
  // //Next left, half red
  // rawPtr[i + 4] = 0×00;
  // rawPtr[i + 5] = 0xFF;
  // }
  // else if (x 0 && raw!=null)
  // {

  // }

  //}
  }
  }
  else if (bmp.PixelFormat == System.Drawing.Imaging.PixelFormat.Format32bppRgb)
  {

  //the pixels row by row
  //for (int y = 0; y < data.Height; ++y)
  //{
  // byte* ptrSrc = (byte*)data.Scan0 + (y * data.Stride);
  // int* pixelPtr = (int*)ptrSrc;

  // for (int x = 0; x < data.Width; ++x)
  // {
  // System.Drawing.Color col = System.Drawing.Color.FromArgb(*pixelPtr);

  // if (col == ColorToFind)
  // return new System.Drawing.Point(x, y);

  // ++pixelPtr; //Increate ptr by 4 bytes, because it is int
  // }
  //}

  ////int PixelSize = 4;

  fixed (byte* rawPt = raw)
  //the pixels row by row
  for (int y = 0; y < data.Height; y++)
  {
  byte* rawPtr = (byte*)data.Scan0 + (y * data.Stride);
  //the pixels row by row

  for (int x = 0; x < data.Width; x++)
  {
  rawPtr[x * BytesPerPixel] = 255;
  //rawPtr[x * BytesPerPixel] = 0;
  //rawPtr[x * BytesPerPixel] = 0;

  }
  }

  /*
  fixed (byte* rawPt = raw)
  for (int y = 0; y < data.Height; y++)
  {
  byte* rawPtr = (byte*)data.Scan0 + (y * data.Stride);

  for (int x = 0; x < data.Width; x++)
  {
  //rawPtr[x * BytesPerPixel] = 255;

  rawPt[x * BytesPerPixel] = rawPtr[y * data.Width+x+2];//b
  rawPt[x * BytesPerPixel+1] = rawPtr[y * data.Width + x + 1];//g
  rawPt[x * BytesPerPixel + 2] = rawPtr[y * data.Width + x];//r

  }
  }*/

  /*
  fixed (byte* rawPt = raw)
  for (int y = 0; y < data.Height; ++y)
  {
  byte* rawPtr = (byte*)data.Scan0 + (y * data.Stride);

  for (int x = 0; x < data.Width; x += BytesPerPixel)
  {
  //rawPtr[x * BytesPerPixel] = 255;

  rawPt[x * BytesPerPixel] = rawPtr[y * data.Width + x + 2];//b
  rawPt[x * BytesPerPixel + 1] = rawPtr[y * data.Width + x + 1];//g
  rawPt[x * BytesPerPixel + 2] = rawPtr[y * data.Width + x];//r

  }
  }*/

  //fixed (byte* rawPt = raw)

  //for (int y = 0; y < data.Height; ++y)
  //{
  // byte* rawPtr = (byte*)data.Scan0 + (y * data.Stride);

  // for (int x = 0; x < data.Width; x += BytesPerPixel)
  // {
  // //rawPtr[x * BytesPerPixel] = 255;

  // rawPt[y * data.Width+x] = rawPtr[y * data.Width + x + 2];//b
  // rawPt[y * data.Width+x + 1] = rawPtr[y * data.Width + x + 1];//g
  // rawPt[y * data.Width+x + 2] = rawPtr[y * data.Width + x];//r

  // }
  //}

  //for (int i = 0; i < rawStride; i++)
  // {
  // byte* pixel = (byte*)data.Scan0;
  // pixel = pixel + (i * 4);

  // byte b = pixel[0];
  // byte g = pixel[1];
  // byte r = pixel[2];

  // byte luma = (byte)(r * 0.3 + g * 0.59 + b * 0.11);
  // raw[i] = luma;
  // }

  //byte* bmpPtr = (byte*)data.Scan0.ToPointer();

  //fixed (byte* rawPtr = raw)
  // for (row = 0; row < height; ++row)
  // {
  // for (column = 0; column < rawStride; column += BytesPerPixel)
  // {
  // // rawPtr[row * rawStride + column] = bmpPtr[row * bmpStride + column]; //b
  // // rawPtr[row * rawStride + column + 1] = bmpPtr[row * bmpStride + column + 1]; //g
  // // rawPtr[row * rawStride + column + 2] = bmpPtr[row * bmpStride + column + 2]; //r

  // rawPtr[row * rawStride + column] = bmpPtr[row * bmpStride + column + 2]; //b
  // rawPtr[row * rawStride + column + 1] = bmpPtr[row * bmpStride + column + 1]; //g
  // rawPtr[row * rawStride + column + 2] = bmpPtr[row * bmpStride + column]; ; //r
  // }
  // }
  }
  }
  }
  catch (Exception e)
  {
  return null;
  }
  finally
  {
  bmp.UnlockBits(data);
  //bmp.Save(@"C:\JK.bmp", ImageFormat.Bmp);
  }

  return raw;

  }

• • Reply
  Eileen ni -...

  All-Star

  19909 Points

  2017 Posts

  Re: Tiff image convert is not work in the following pixel in my code?

  Jun 17, 2014 01:08 AM|Eileen ni - MSFT|LINK

  Hi rajkumar,

  Thanks for your post.

  According to your description,the answer is given here:

  http://social.msdn.microsoft.com/Forums/en-US/bdbe5318-d44c-41d1-b82e-dd63d27e4144/problem-convert-to-tiff-image-to-bitmap-conversion-in-net?forum=net

  Hope this helps you.

  Best Regards,

  Eileen

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• • Reply
  rajkumar.mca...

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  0 Points

  2 Posts

  Re: Tiff image convert is not work in the following pixel in my code?

  Jun 24, 2014 02:25 AM|rajkumar.mca.bhc|LINK

  Hi,

       That question was mine so please give new solution ..........