L_ImgKrnInvertImage

#include "ltimgkrn.h"

L_LTIMGKRN_API L_INT L_ImgKrnInvertImage(bitmap)

BITMAPHANDLE *bitmap; pointer to the bitmap handle

Inverts the colors in the specified bitmap, giving it the appearance of a photographic negative.

Parameter Description
bitmap Pointer to the bitmap handle referencing the bitmap to be processed.

Returns

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

Required DLLs and Libraries

LTIMGKRN
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.

See Also
Functions: L_ImgKrnCopyImage, L_ImgKrnCreateImage, L_ImgKrnCropImage, L_ImgKrnDetectDocument, L_ImgKrnDetectGlare, L_ImgKrnFromYUV, L_ImgKrnManualPerspectiveCorrection, L_ImgKrnRotateFlipImage, L_ImgKrnSignalToNoiseRatio
Topics:

Raster Image Functions: Correcting Colors

Example

This example loads a bitmap and inverts it.

L_INT KrnInvertImageExample(L_VOID) 
{ 
   L_INT ret; 
   BITMAPHANDLE bitmap;   /* Bitmap handle to hold the loaded image. */ 
 
   /* Load the bitmap */ 
   ret = L_LoadBitmap(MAKE_IMAGE_PATH(TEXT("cannon.jpg")), &bitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if (ret != SUCCESS) 
      return ret; 
 
   /* Invert the image colors */ 
   ret = L_ImgKrnInvertImage(&bitmap); 
   if (ret == SUCCESS) 
      ret = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &bitmap, FILE_BMP, 24, 0, NULL); 
 
   L_FreeBitmap(&bitmap); 
 
   return ret; 
} 

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