EasyImage::SignalNoiseRatio
Computes the signal to noise ratio, in dB, by comparing a given image to a reference image.
Namespace: Euresys::Open_eVision
[C++]
float SignalNoiseRatio(
const EROIBW8* sourceImage,
const EROIBW8* referenceImage,
Euresys::Open_eVision::EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
const EROIBW16* sourceImage,
const EROIBW16* referenceImage,
Euresys::Open_eVision::EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
const EROIC24* sourceImage,
const EROIC24* referenceImage,
Euresys::Open_eVision::EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
const EROIBW8* sourceImage,
const EROIBW8* referenceImage,
const EROIBW8* mask,
Euresys::Open_eVision::EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
const EROIBW16* sourceImage,
const EROIBW16* referenceImage,
const EROIBW8* mask,
Euresys::Open_eVision::EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
const EROIC24* sourceImage,
const EROIC24* referenceImage,
const EROIBW8* mask,
Euresys::Open_eVision::EReferenceNoise referenceNoise
)
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
[C#]
float SignalNoiseRatio(
Euresys.Open_eVision.EROIBW8 sourceImage,
Euresys.Open_eVision.EROIBW8 referenceImage,
Euresys.Open_eVision.EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
Euresys.Open_eVision.EROIBW16 sourceImage,
Euresys.Open_eVision.EROIBW16 referenceImage,
Euresys.Open_eVision.EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
Euresys.Open_eVision.EROIC24 sourceImage,
Euresys.Open_eVision.EROIC24 referenceImage,
Euresys.Open_eVision.EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
Euresys.Open_eVision.EROIBW8 sourceImage,
Euresys.Open_eVision.EROIBW8 referenceImage,
Euresys.Open_eVision.EROIBW8 mask,
Euresys.Open_eVision.EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
Euresys.Open_eVision.EROIBW16 sourceImage,
Euresys.Open_eVision.EROIBW16 referenceImage,
Euresys.Open_eVision.EROIBW8 mask,
Euresys.Open_eVision.EReferenceNoise referenceNoise
)
float SignalNoiseRatio(
Euresys.Open_eVision.EROIC24 sourceImage,
Euresys.Open_eVision.EROIC24 referenceImage,
Euresys.Open_eVision.EROIBW8 mask,
Euresys.Open_eVision.EReferenceNoise referenceNoise
)
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.