LBitmap::SignalToNoiseRatio

Summary

Finds the signal to noise ratio (SNR) of the Bitmap.

Syntax

#include "ltwrappr.h"

virtual L_INT LBitmap::SignalToNoiseRatio(SNR)

Parameters

L_FLOAT* SNR

Pointer to a variable to be updated with the SNR value.

Returns

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

Comments

Calculates SNR as the 10*log10 of the real value. This value gives an indication for the homogeneity of adjacent pixels in image.

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

This function supports 24 and 36-bit color images and 8 grayscale images.

Signal to Noise Ratio Function - Before

Signal to Noise Ratio Function - Before

Signal to Noise Ratio Function - After

Signal to Noise Ratio Function - After

View additional platform support for this Signal to Noise Ratio function.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Example

This example loads a bitmap and find signal to noise ratio.

L_INT LBitmap__SignalToNoiseRatioExample(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 L_SignalToNoiseRatio and find S/N ratio*/ 
   L_FLOAT SNR ; 
   nRet = LeadBitmap.SignalToNoiseRatio(&SNR) ; 
 
   return nRet ; 
} 

Help Version 22.0.2023.2.2
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C++ Class Library Help
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.