sp_distributionT_sp_distributionSpDistributionSpDistribution (Operator)
Name
sp_distributionT_sp_distributionSpDistributionSpDistribution — Generate a salt-and-pepper noise distribution.
Signature
Description
sp_distributionsp_distributionSpDistributionSpDistributionSpDistribution generates a noise distribution with the
values 0 and 255. The parameters PercentSaltPercentSaltPercentSaltPercentSaltpercentSalt and
PercentPepperPercentPepperPercentPepperPercentPepperpercentPepper determine the percentage of white and black
noise pixels, respectively. The sum of these parameters must be
smaller than 100. Usually, the result DistributionDistributionDistributionDistributiondistribution is
used as input for the operator add_noise_distributionadd_noise_distributionAddNoiseDistributionAddNoiseDistributionAddNoiseDistribution.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Parameters
PercentSaltPercentSaltPercentSaltPercentSaltpercentSalt (input_control) number → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Percentage of salt (white noise pixels).
Default value: 5.0
Suggested values: 1.0, 2.0, 5.0, 7.0, 10.0, 15.0, 20.0, 30.0
Typical range of values: 0.0
≤
PercentSalt
PercentSalt
PercentSalt
PercentSalt
percentSalt
≤
100.0
Minimum increment: 0.1
Recommended increment: 1.0
Restriction: 0.0 <= PercentSalt && PercentSalt <= 100.0
PercentPepperPercentPepperPercentPepperPercentPepperpercentPepper (input_control) number → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Percentage of pepper (black noise pixels).
Default value: 5.0
Suggested values: 1.0, 2.0, 5.0, 7.0, 10.0, 15.0, 20.0, 30.0
Typical range of values: 0.0
≤
PercentPepper
PercentPepper
PercentPepper
PercentPepper
percentPepper
≤
100.0
Minimum increment: 0.1
Recommended increment: 1.0
Restriction: 0.0 <= PercentPepper && PercentPepper <= 100.0
DistributionDistributionDistributionDistributiondistribution (output_control) distribution.values-array → HTupleHTupleHtuple (real) (double) (double) (double)
Resulting noise distribution.
Number of elements: 513
Example (HDevelop)
read_image(Image,'fabrik')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
Example (C)
read_image(&Image,"fabrik");
disp_image(Image,WindowHandle);
create_tuple(&PerSalt,1);
set_d(PerSalt,30.0,0);
create_tuple(&PerPepper,1);
set_d(PerPepper,30.0,0);
T_sp_distribution(PerSalt,PerPepper,&Dist);
T_add_noise_distribution(Image,&ImageNoise,Dist);
disp_image(ImageNoise,WindowHandle);
Example (HDevelop)
read_image(Image,'fabrik')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
Example (HDevelop)
read_image(Image,'fabrik')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
Example (HDevelop)
read_image(Image,'fabrik')
dev_display (Image)
sp_distribution(30,30,Dist)
add_noise_distribution(Image,ImageNoise,Dist)
dev_display (ImageNoise)
Possible Successors
add_noise_distributionadd_noise_distributionAddNoiseDistributionAddNoiseDistributionAddNoiseDistribution
Alternatives
gauss_distributiongauss_distributionGaussDistributionGaussDistributionGaussDistribution,
noise_distribution_meannoise_distribution_meanNoiseDistributionMeanNoiseDistributionMeanNoiseDistributionMean
See also
gauss_distributiongauss_distributionGaussDistributionGaussDistributionGaussDistribution,
noise_distribution_meannoise_distribution_meanNoiseDistributionMeanNoiseDistributionMeanNoiseDistributionMean,
add_noise_whiteadd_noise_whiteAddNoiseWhiteAddNoiseWhiteAddNoiseWhite
Module
Foundation