#include "ltwrappr.h"

virtual L_INT LBitmap::BlurDetection(Blurred, BlurExtent)

L_BOOL* Blurred;

flag to show whether image is blurred

L_DOUBLE* BlurExtent;

the amount of blur extent

Determines whether image is blurred or not.

Parameter Description
Blurred Pointer to a variable to be updated with the value showing whether the image is blurred. Possible values are:
Value Meaning
TRUE The image is blurred.
FALSE The image is not blurred.
BlurExtent Pointer to a variable to be updated with the amount of blur extent. Possible values are range from 0 to 1.0.



The function was successful.

< 1

An error occurred. Refer to Return Codes.


The amount of blur extent will be computed if the image is blurred; otherwise, the value is useless.

This function can only process entire images. It does not support regions.

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

Required DLLs and Libraries


For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.


Win32, x64.

See Also


LBitmap::GlareDetection, LBitmap::SignalToNoiseRatio, LBitmap::TextBlurDetector, Class Members


#if defined (LEADTOOLS_V19_OR_LATER) 
L_INT LBitmap__BlurDetectionExample(L_VOID) 
    L_INT nRet; 
    LBitmap LeadBitmap; 
    nRet =LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("cannon.jpg")), 0,ORDER_BGR); 
    if(nRet !=SUCCESS) 
        return nRet ; 
    /* Apply a blur detector */ 
    L_BOOL Blurred ; 
    L_DOUBLE BlurExtent ; 
    nRet = LeadBitmap.BlurDetection(&Blurred, &BlurExtent); 
    return nRet; 
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