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#include "l_bitmap.h"
L_LTIMGEFX_API L_INT L_HolesRemovalBitmapRgn(pBitmap, uFlags)
Removes all the holes in a region.
Pointer to the bitmap handle referencing the bitmap to be changed.
Reserved for future use. Must be 0.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
This function is designed to work on bitmaps that have a region. It removes the holes from the bitmaps region. If this function is used with a bitmap that does not have a region, the "Invalid Parameter" error is returned.
To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.
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.
This function supports 32-bit grayscale images.
Required DLLs and Libraries
Win32, x64, Linux.
This example loads a bitmap, defines a region on it after converting to 1bit black and white, and applies the holes removal filter to remove small white or black segments
L_INT HolesRemovalBitmapRgnExample(L_VOID){L_INT nRet;BITMAPHANDLE LeadBitmap;/* Load the bitmap, keeping the bits per pixel of the file */nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);if(nRet !=SUCCESS)return nRet;/*convert to 1-bit black and white*/nRet = L_ColorResBitmap(&LeadBitmap, &LeadBitmap, sizeof(BITMAPHANDLE), 1,CRF_FIXEDPALETTE,NULL, NULL, 0, NULL, NULL);if(nRet !=SUCCESS)return nRet;/*Set the region around the black or white region according to (0,0) color*/nRet = L_SetBitmapRgnMagicWand(&LeadBitmap,0, 0, RGB(0,0,0), RGB(25,25,25), L_RGN_SET);if(nRet !=SUCCESS)return nRet;/*Remove holes around the black or white regions*/nRet = L_HolesRemovalBitmapRgn (&LeadBitmap, 0);if(nRet !=SUCCESS)return nRet;/* Fill the region with balck color*/L_FillBitmap(&LeadBitmap, RGB(0,0,0));L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL);//free bitmapif(LeadBitmap.Flags.Allocated)L_FreeBitmap(&LeadBitmap);return SUCCESS;}
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