L_ColoredPencilBitmap

#include "l_bitmap.h"

L_LTIMGSFX_API L_INT L_ColoredPencilBitmap(pBitmap, uRatio, uDim, uFlags)

pBITMAPHANDLE pBitmap;	pointer to the bitmap handle
L_UINT uRatio;	color adjustment percentage
L_UINT uDim;	size of the pencil coloring neighborhood
L_UINT32 uFlags;	flags

Applies an effect to a bitmap that makes it look like it has been drawn with colored pencils.

Parameter	Description
pBitmap	Pointer to the bitmap handle that references the bitmap on which to apply the effect.
uRatio	Value that represents how much the bitmap colors should be adjusted so they appear to be colored pencil colors. Valid values range from 0 to 100. A value of 0 means that the bitmap will not have any change in pixel values, whereas a value of 100 means that the maximum possible amount will be added to the pixel values.
uDim	Value that represents the size of the pencil coloring neighborhood. It is the length, in pixels, of one side of a square. Valid values range from 0 to 100. Increasing this value increases the thickness of the edges that are detected.
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 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 applies an effect to a bitmap that makes it look like it has been drawn with colored pencils.

For an example, click here

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 signed data images. It returns the error

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

LTIMGSFX

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.

Example

The following example loads a bitmap and applies the colored pencil effect:

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT ColoredPencilBitmapExample(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("ImageProcessingDemo\\NaturalFruits.jpg")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
   /* pencil color the bitmap with Ratio value of 50 and with a neighborhood of 3x3 pixels*/ 
   nRet = L_ColoredPencilBitmap(&LeadBitmap,  50, 3, 0); 
   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; 
}

Help Version 19.0.2017.10.27

LEADTOOLS Raster Imaging C API Help

Introduction

Version History

Getting Started

LEADTOOLS Raster Imaging Features

Redistributables/Files To Be Included With Your Application

Functions:	L_ImpressionistBitmap, L_DryBitmap, L_ColoredPencilBitmapExt
Topics:	Raster Image Functions: Modifying Intensity Values
	Raster Image Functions: Filtering Images
	Detecting and Enhancing Edges and Lines
	Applying Artistic Effects