Hi All,
In my project I am trying to implement Crop feature. Till now I am able to crop the image for the rectangle drawn (for selection of region of interest(ROI)) and get the raw data of the ROI. Now I am trying to the display the image. The pixelformat of the image is 8bppIndexed format.
Now I'm trying to display the image with the following code:
But I'm not able to calculate the Stride correctly for various cropped dimensions.
Can anybody please tell me how to exactly calculate the Bitmap's Stride so that I can display image of any cropped width on the picturebox?
Regards,
Susheelss
In my project I am trying to implement Crop feature. Till now I am able to crop the image for the rectangle drawn (for selection of region of interest(ROI)) and get the raw data of the ROI. Now I am trying to the display the image. The pixelformat of the image is 8bppIndexed format.
Now I'm trying to display the image with the following code:
Code:
Dim _p8BitPixelData as Intptr
Dim ImagePalette As System.Drawing.Imaging.ColorPalette
Dim Stride As Integer
If _p8BitPixelData = IntPtr.Zero Then
_p8BitPixelData = AllocHGlobal(RowsCount * ColumnsCount)
End If
Marshal.Copy(ImageData_8Bit, 0, _p8BitPixelData, RowsCount * ColumnsCount)
ImageFrom8BitPixelData = New Bitmap(RowsCount, ColumnsCount, Stride, System.Drawing.Imaging.PixelFormat.Format8bppIndexed, _p8BitPixelData)
ImagePalette = ImageFrom8BitPixelData.Palette
For i As Integer = 0 To ImagePalette.Entries.Length - 1
ImagePalette.Entries(i) = Color.FromArgb(MaxPixelValue_EightBitImg, i, i, i)
Next
ImageFrom8BitPixelData.Palette = ImagePalette
Picturebox1.Image = ImageFrom8BitPixelDataCan anybody please tell me how to exactly calculate the Bitmap's Stride so that I can display image of any cropped width on the picturebox?
Regards,
Susheelss