EasyImage::SignalNoiseRatio

Computes the signal to noise ratio, in dB, by comparing a given image to a reference image.

Namespace: Euresys::Open_eVision_2_16

[C++]

float SignalNoiseRatio(
   const EROIBW8* sourceImage,
   const EROIBW8* referenceImage,
   Euresys::Open_eVision_2_16::EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   const EROIBW16* sourceImage,
   const EROIBW16* referenceImage,
   Euresys::Open_eVision_2_16::EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   const EROIC24* sourceImage,
   const EROIC24* referenceImage,
   Euresys::Open_eVision_2_16::EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   const EROIBW8* sourceImage,
   const EROIBW8* referenceImage,
   const EROIBW8* mask,
   Euresys::Open_eVision_2_16::EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   const EROIBW16* sourceImage,
   const EROIBW16* referenceImage,
   const EROIBW8* mask,
   Euresys::Open_eVision_2_16::EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   const EROIC24* sourceImage,
   const EROIC24* referenceImage,
   const EROIBW8* mask,
   Euresys::Open_eVision_2_16::EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   EROIBW8* pSrcImage,
   EROIBW16* pRefImage,
   OEV_UINT32 un32Count,
   Euresys::Open_eVision_2_16::EReferenceNoise eReferenceNoise
)

Parameters

sourceImage

Pointer to the source image/ROI.

referenceImage

Pointer to the reference image/ROI.

referenceNoise

Specifies how the reference image is affected by noise, as defined by EReferenceNoise.

mask

Pointer to a mask to apply the function only on a particular region in the image. Note: the mask must have the same size as the source image.

pSrcImage

pRefImage

un32Count

eReferenceNoise

Remarks

The reference image can be noiseless (obtained by suppressing the source of noise) or be affected by a noise of the same distribution as the given image.
The signal amplitude is defined as the sum of the squared pixel gray-level values while the noise amplitude is defined as the sum of the squared difference between the pixel gray-level values of the given image and the reference.

EasyImage.SignalNoiseRatio

Computes the signal to noise ratio, in dB, by comparing a given image to a reference image.

Namespace: Euresys.Open_eVision_2_16

[C#]

float SignalNoiseRatio(
   Euresys.Open_eVision_2_16.EROIBW8 sourceImage,
   Euresys.Open_eVision_2_16.EROIBW8 referenceImage,
   Euresys.Open_eVision_2_16.EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   Euresys.Open_eVision_2_16.EROIBW16 sourceImage,
   Euresys.Open_eVision_2_16.EROIBW16 referenceImage,
   Euresys.Open_eVision_2_16.EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   Euresys.Open_eVision_2_16.EROIC24 sourceImage,
   Euresys.Open_eVision_2_16.EROIC24 referenceImage,
   Euresys.Open_eVision_2_16.EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   Euresys.Open_eVision_2_16.EROIBW8 sourceImage,
   Euresys.Open_eVision_2_16.EROIBW8 referenceImage,
   Euresys.Open_eVision_2_16.EROIBW8 mask,
   Euresys.Open_eVision_2_16.EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   Euresys.Open_eVision_2_16.EROIBW16 sourceImage,
   Euresys.Open_eVision_2_16.EROIBW16 referenceImage,
   Euresys.Open_eVision_2_16.EROIBW8 mask,
   Euresys.Open_eVision_2_16.EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   Euresys.Open_eVision_2_16.EROIC24 sourceImage,
   Euresys.Open_eVision_2_16.EROIC24 referenceImage,
   Euresys.Open_eVision_2_16.EROIBW8 mask,
   Euresys.Open_eVision_2_16.EReferenceNoise referenceNoise
)

float SignalNoiseRatio(
   Euresys.Open_eVision_2_16.EROIBW8 pSrcImage,
   Euresys.Open_eVision_2_16.EROIBW16 pRefImage,
   uint un32Count,
   Euresys.Open_eVision_2_16.EReferenceNoise eReferenceNoise
)