Question

code problem of semivariogram
clc; close all; clear all; x=10+sqrt(50)*randn(400,1); y=2+sqrt(30)*randn(400,1); [a,b]=si...

environ 12 ans il y a | 1 réponse | 0

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Question

i need matrix n which generated
snr=mean2(I./n)=0.5 ;where I is original image matrix and n is a noise matrix of same size of I. if i have 'I',i need matr...

environ 12 ans il y a | 1 réponse | 0

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Question

calculate signal power of image
how to calculate signal power of image in matlab?

environ 12 ans il y a | 2 réponses | 0

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Question

that actual snr is
one person say me that actual snr is,,, if noiseImage=noisyImage-originalImage then actual snr=mean(originalImage./abs(n...

environ 12 ans il y a | 1 réponse | 0

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Question

how n(20*20 matrix) can obtain
mean(s./n)=0.5 s= 1 2 3 4 5 ...20 20 19 18 17 16....1 ...

environ 12 ans il y a | 1 réponse | 0

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Question

tthis right way to find
a=sqrt(0.5)*randn(400) snr=1/0.5 %0.5 is variance and signal=1 consider as normalized snrdb=10*log(snr) ...

environ 12 ans il y a | 1 réponse | 0

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Question

if i have no information of original image
if i have no information of original image and i do not add noise manually and i have just noisy image then how can i find sign...

environ 12 ans il y a | 2 réponses | 0

2

réponses

Question

my question is that
a=randn(400); generates 400*400 matrix in matlab, my question is that this function generates different mean and variance ma...

environ 12 ans il y a | 1 réponse | 0

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Question

nugget variance from semivariogram
how to calculate nugget variance from semivariogram? http://www.mathworks.com/matlabcentral/fileexchange/20355-experimental...

environ 12 ans il y a | 1 réponse | 0

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Question

how can create matrix(image matrix) of 3db snr(signal to noise ratio) in matlab?
how can create matrix(image matrix) of 3db snr(signal to noise ratio) in matlab?

environ 12 ans il y a | 2 réponses | 0

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réponses

Réponse apportée
Find Min/Max Value of a Column in a Matrix
[r c] =find(Buff==min(Buff(:,3)))

environ 12 ans il y a | 0

| A accepté

Question

how could calculate semi(experimental)variogram of image?
how could calculate semi(experimental)variogram of image?

environ 12 ans il y a | 1 réponse | 0

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réponse

Question

if i add matrix(same size of original image)as a noisy matrix in original image, then how could i get noise of image(original+noisy matrix)?
if i add matrix(same size of original image)as a noisy matrix in original image, then how could i get noise of image(original+n...

environ 12 ans il y a | 2 réponses | 0

2

réponses

Question

how to create homogeneous area from image?
how to create homogeneous area from image?

environ 12 ans il y a | 1 réponse | 0

1

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Question

fun1= normrnd(20,sqrt(0.6),[400 400]); fun1 = 20 + sqrt(0.6)*randn(400); in above function 20 is mean and 0.6 is a variance; fun1 should generate 20 mean and 0.6 variance matrix of 400*400 . but i got 20 mean and variance is 0.0018,,,so what is prob
fun1= normrnd(20,sqrt(0.6),[400 400]); fun1 = 20 + sqrt(0.6)*randn(400); in above function 20 is mean and 0.6 is a variance;...

environ 12 ans il y a | 1 réponse | 0

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Question

v = directionalVariogram(img, xoffset, yoffset); in which version of matlab this function is suported? also in which toolbox?
v = directionalVariogram(img, xoffset, yoffset); in which version of matlab this function is suported? also in which toolbox?...

environ 12 ans il y a | 1 réponse | 0

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Question

a=rand(400), this function generates 400*400 random matrix a,how could generate matrix a with specified mean and variance.
a=rand(400), this function generates 400*400 random matrix a,how could generate matrix a with specified mean and variance in m...

environ 12 ans il y a | 1 réponse | 0

1

réponse

Question

how could noise OF IMAGE converted into db?
how could SNR OF IMAGE into db?

plus de 12 ans il y a | 1 réponse | 0

0

réponse

Question

how to add constant noise in image in matlab function?
how to add constant noise in image in matlab function?

plus de 12 ans il y a | 2 réponses | 0

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Question

how could i get semivariogram of image in matlab?
how could i get semivariogram of image in matlab?

plus de 12 ans il y a | 1 réponse | 0

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Question

variogram of image in matlab
variogram of image in matlab

plus de 12 ans il y a | 1 réponse | 0

0

réponse

Question

how to calculate actual snr of image in matlab?
how to calculate actual snr of image in matlab?

plus de 12 ans il y a | 2 réponses | 0

2

réponses

Question

how to add constant noise in image?
how to add constant noise in image? imnoise is not function for constant noise,i adds random noise

plus de 12 ans il y a | 1 réponse | 0

1

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Question

how to add noise in db in image?
how to add noise in db in image?

plus de 12 ans il y a | 1 réponse | 0

0

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Question

simulation done in keil IDE is possible in matlb?
simulation done in keil IDE is possible in matlb?

plus de 12 ans il y a | 1 réponse | 0

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réponse

Question

how to choose homogeneous blocks from image in matlab ?
how to choose homogeneous blocks from image in matlab ? i have divided image into 10*10 window. and then i took standard deviati...

plus de 12 ans il y a | 1 réponse | 0

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réponse

Question

i have two array x=[1 6 8 9],y=[3 6 9 14],then i plot (x,y) in matlab. i have no linear equation of x,y. i have only above array of x and y. if value of x is 4 then what is the value of y. is it possible using logic?
i have two array x=[1 6 8 9],y=[3 6 9 14],then i plot (x,y) in matlab. i have no linear equation of x,y. i have only above array...

plus de 12 ans il y a | 2 réponses | 0

2

réponses

Question

i have two array x=[1 6 8 9],y=[3 6 9 14],then i plot (x,y) in matlab. i have no linear equation of x,y. i have only above array of x and y. if value of x is 4 then what is the value of y.
i have two array x=[1 6 8 9],y=[3 6 9 14],then i plot (x,y) in matlab. i have no linear equation of x,y. i have only above a...

plus de 12 ans il y a | 1 réponse | 0

1

réponse

Question

how to implement linear eauation from points (x1,y1),(x2,y2),(x3,y3),(x4,y4) and so on in xy plane in matlab
how to implement linear eauation from points (x1,y1),(x2,y2),(x3,y3),(x4,y4) and so on in xy plane in matlab

plus de 12 ans il y a | 1 réponse | 0

1

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Question

how to add salt &pepper,gaussian noise (in 3 db)in image in matlab
how to add salt &pepper,gaussian noise (in 3 db)in image in matlab

plus de 12 ans il y a | 1 réponse | 0

1

réponse