#include "l_bitmap.h"
L_LTIMGEFX_API L_INT L_HolesRemovalBitmapRgn(pBitmap, uFlags)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_UINT32 uFlags; |
/* flags */ |
Removes all the holes in a region.
Parameter |
Description |
pBitmap |
Pointer to the bitmap handle referencing the bitmap to be changed. |
uFlags |
Reserved for future use. Must be 0. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
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
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.
See Also
Example
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
#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName #if defined (LEADTOOLS_V16_OR_LATER) 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 bitmap if(LeadBitmap.Flags.Allocated) L_FreeBitmap(&LeadBitmap); return SUCCESS; } #else 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); 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 bitmap if(LeadBitmap.Flags.Allocated) L_FreeBitmap(&LeadBitmap); return SUCCESS; } #endif // LEADTOOLS_V16_OR_LATER