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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 - After
View additional platform support for this Signal to Noise Ratio function.
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.
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 ;}
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