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L_DeinterlaceBitmap

#include "l_bitmap.h"

L_LTIMGEFX_API L_INT L_DeinterlaceBitmap(pBitmap, uFlags)

Deinterlaces a video source image.

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle referencing the bitmap to be changed.

L_UINT uFlags

Flags that indicate how to deinterlace the image and whether to remove odd lines or even lines. You can use a bit wise OR (|) to specify one flag from each group.

Value	Meaning
How to deinterlace the image:
DEINTERLACE_NORMAL	[0x0001]Deinterlace the image by copying the data line into the removed lines.
DEINTERLACE_SMOOTH	[0x0002] Deinterlace the image by averaging the data lines and copying the averaged data into the removed lines.
Removing odd or even lines:
DEINTERLACE_ODD	[0x0010] Remove the odd lines.
DEINTERLACE_EVEN	[0x0020] Remove the even lines.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

This function deinterlaces video source images by removing the black lines. It proceeds by merging lines in the image and/or blending them. Different options are available according to the value of uFlags.

This function does not work with regions.

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available in the Document and Medical Imaging toolkits.

To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Required DLLs and Libraries

LTIMGEFX
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64, Linux.

Functions

Topics

Example

The following loads a bitmap and applies the deinterlace function to it:

L_INT DeinterlaceBitmapExample(L_VOID) 
{ 
   L_INT nRet; 
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle to hold the loaded image. */ 
 
   /* Load the bitmap, keeping the bits per pixel of the file */ 
   nRet = L_LoadBitmap(MAKE_IMAGE_PATH(TEXT("interlaced_footage.jpg")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
 
   /* remove odd lines smoothly */ 
   nRet = L_DeinterlaceBitmap(&LeadBitmap, DEINTERLACE_SMOOTH | DEINTERLACE_ODD); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
   //free bitmap  
   if(LeadBitmap.Flags.Allocated)   
      L_FreeBitmap(&LeadBitmap);   
   return SUCCESS; 
}

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