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LBitmap::TextBlurDetector

Summary

Takes an image and divide it into many blocks then examine each block to check whether it is background and if it is in focus or out of focus.

Syntax

#include "ltwrappr.h"

virtual L_INT LBitmap::TextBlurDetector(pNonBlurredBlocks, NonBlurredBlocksCount, pBlurredBlocks, BlurredBlocksCount, CombinedTextBlocks)

Parameters

L_RECT** pNonBlurredBlocks

the array of in focus blocks after applying text blur detector.

L_INT* NonBlurredBlocksCount

the number of out of focus blocks after applying text blur detector.

L_RECT** pBlurredBlocks

the array of out of focus blocks after applying text blur detector.

L_INT* BlurredBlocksCount

the number of out of focus blocks after applying text blur detector.

L_RECT* CombinedTextBlocks

the boundary of text area in the image, that's isn't a background.

Returns

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

Comments

This command supports 8,12, 16-bit grayscale images and 24, 32-bit colored images.

Required DLLs and Libraries

LTDIS
LTFIL
LTIMGCOR
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

This example loads a bitmap and applies text blur detector.

L_INT LBitmap__TextBlurDetectorExample(L_VOID) 
{ 
    L_INT nRet ; 
    LBitmap LeadBitmap ; 
 
    nRet = LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("Barcode.jpg")), 0,ORDER_BGR); 
    if(nRet !=SUCCESS) 
        return nRet; 
 
    /* Apply text blur detector */ 
    L_RECT* pInFocusBlocks      = NULL; 
    L_INT InFocusBlocksCount    = 0; 
    L_RECT* pOutOfFocusBlocks   = NULL; 
    L_INT OutOfFocusBlocksCount = 0; 
    L_RECT CombinedTextBlocks   = {0}; 
 
    nRet = LeadBitmap.TextBlurDetector(&pInFocusBlocks, &InFocusBlocksCount, &pOutOfFocusBlocks, &OutOfFocusBlocksCount, &CombinedTextBlocks); 
 
    LeadBitmap.TextBlurFree(pInFocusBlocks, pOutOfFocusBlocks); 
 
    return nRet; 
}