1,179 total contributions since 2017

#Image Processing

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#Alma-mater Tezpur University India

Answered

I have to calculate BER(bit error rate ) of OOK(on off keying signal)

I have checked the code, as suggested you the followings points: First one: As the error pointed, use randi insteat on randint...

I have to calculate BER(bit error rate ) of OOK(on off keying signal)

I have checked the code, as suggested you the followings points: First one: As the error pointed, use randi insteat on randint...

5 hours ago | 0

Answered

Display negative results with "i" rather than negative sign

Is this: First one, if OK, do the same for 2nd program n=input ('enter a number between -10,000,000 and 10,000,000: '); if n<-...

Display negative results with "i" rather than negative sign

Is this: First one, if OK, do the same for 2nd program n=input ('enter a number between -10,000,000 and 10,000,000: '); if n<-...

7 hours ago | 0

| accepted

Answered

How to calculate true positive , true negative, false positive and false negative as we have segmented and ground truth

%Last year I answered this way, you can avoid the loop (Recommended) TP=0;FP=0;TN=0;FN=0; for i=1:400; for...

How to calculate true positive , true negative, false positive and false negative as we have segmented and ground truth

%Last year I answered this way, you can avoid the loop (Recommended) TP=0;FP=0;TN=0;FN=0; for i=1:400; for...

7 hours ago | 0

| accepted

Answered

SNIR formula in MATLAB

Here SINR Please note it was Introduced in R2018a, for detail theory just google. Matlab use: I already provided the Matlab do...

SNIR formula in MATLAB

Here SINR Please note it was Introduced in R2018a, for detail theory just google. Matlab use: I already provided the Matlab do...

18 hours ago | 0

Answered

Attempt to call constructor figure with incorrect letter case.

No Error: close all; clear; clc; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% PARAMETERS %%%%%%%%%%%%%%%%%%%%%%%%%%%% %Number of Nodes ...

Attempt to call constructor figure with incorrect letter case.

No Error: close all; clear; clc; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% PARAMETERS %%%%%%%%%%%%%%%%%%%%%%%%%%%% %Number of Nodes ...

19 hours ago | 0

Answered

Delete middle rows in table

table_data([3,4],:) = []; After deletion 5th and 6th rows automaticaly become 3 and 4 rows.

Delete middle rows in table

table_data([3,4],:) = []; After deletion 5th and 6th rows automaticaly become 3 and 4 rows.

19 hours ago | 1

Answered

how do i plot this?

w1=? % Defined all data w2=? w3= ? w4=? w5=? t=0:0.01:18; v=- 0.056139*cos(t*w1)-3.3986*cos(t*w2)-0.41655*cos(t*w3)-1.127...

how do i plot this?

w1=? % Defined all data w2=? w3= ? w4=? w5=? t=0:0.01:18; v=- 0.056139*cos(t*w1)-3.3986*cos(t*w2)-0.41655*cos(t*w3)-1.127...

1 day ago | 0

Answered

use nested for-loops to generate a matrix (without typing the numbers explicitly)

I want to use nested for-loops to generate a matrix Multiple ways you can do that, as you asked for: init_val=12; for i=1:3 ...

use nested for-loops to generate a matrix (without typing the numbers explicitly)

I want to use nested for-loops to generate a matrix Multiple ways you can do that, as you asked for: init_val=12; for i=1:3 ...

1 day ago | 0

Answered

error message when poles are in RHP

The problem is here for k = 1: tam3 if imag(r(k)) == 0 && real(r(k)) > 0 % select ...real , positive roots r2(l) = real(r(...

error message when poles are in RHP

The problem is here for k = 1: tam3 if imag(r(k)) == 0 && real(r(k)) > 0 % select ...real , positive roots r2(l) = real(r(...

1 day ago | 0

Answered

Harmonic to noise ratio calculation

You can use this custom function to calculate harmonic to noise ratio (HNR) To understand in detail theory, read here

Harmonic to noise ratio calculation

You can use this custom function to calculate harmonic to noise ratio (HNR) To understand in detail theory, read here

1 day ago | 0

Answered

How do I remove 9 random numbers from a shuffled array?

"My question is how do i remove 9 random numbers from this array of shuffled numbers" shuffled_data=randi(35,[1 35]); % Just E...

How do I remove 9 random numbers from a shuffled array?

"My question is how do i remove 9 random numbers from this array of shuffled numbers" shuffled_data=randi(35,[1 35]); % Just E...

1 day ago | 0

Answered

How to find out the remaining iterations of the Newton Raphson Method with Jakobi Matrix?

Do the x array indexing, consider x=[......] where x(1) as initial value

How to find out the remaining iterations of the Newton Raphson Method with Jakobi Matrix?

Do the x array indexing, consider x=[......] where x(1) as initial value

1 day ago | 0

Answered

Grouping data in a matrx

time_data=[1 1 1 2 3 3 3 4 4]; data=[10 16 14 18 13 14 23 26 29]; time_data1=unique(time_data); data_result=cell(1,length(tim...

Grouping data in a matrx

time_data=[1 1 1 2 3 3 3 4 4]; data=[10 16 14 18 13 14 23 26 29]; time_data1=unique(time_data); data_result=cell(1,length(tim...

2 days ago | 0

| accepted

Answered

How to plot log-normal probability with x and y values?

Based on the data provided by you, it shows the following plot. x=[44 38 36 35 27 26.5 26 26 24 23.5 23 23 21 20.5...

How to plot log-normal probability with x and y values?

Based on the data provided by you, it shows the following plot. x=[44 38 36 35 27 26.5 26 26 24 23.5 23 23 21 20.5...

3 days ago | 0

Answered

Avoiding coloured pixels in text

Chnage the color of Text, there are multiple features to change the color of the text RGB = insertText(I,position,text_str,'Fo...

Avoiding coloured pixels in text

Chnage the color of Text, there are multiple features to change the color of the text RGB = insertText(I,position,text_str,'Fo...

3 days ago | 0

Answered

Finding series/pattern in an array

I have answered this question with help of @Jan Answer's here A =[0 0 0 1 3 6 9 10 10 10 10 10 0 0]; d=[true,diff(A)~=0,true];...

Finding series/pattern in an array

I have answered this question with help of @Jan Answer's here A =[0 0 0 1 3 6 9 10 10 10 10 10 0 0]; d=[true,diff(A)~=0,true];...

4 days ago | 0

Answered

Index exceeds matrix dimensions error message

Yoi defined z3 as scalar, but in the while loop you trying acess it as vectors #Defined here z3=1.23; # while z3(i)>=0 ...

Index exceeds matrix dimensions error message

Yoi defined z3 as scalar, but in the while loop you trying acess it as vectors #Defined here z3=1.23; # while z3(i)>=0 ...

4 days ago | 0

Answered

correlation coefficient of two images

I have tested it with my sample images, there is no issue A=imread('11.png'); % Read any Gray Image [r,c,ch]=size(A); % C...

correlation coefficient of two images

I have tested it with my sample images, there is no issue A=imread('11.png'); % Read any Gray Image [r,c,ch]=size(A); % C...

4 days ago | 0

Answered

how can I seperate magnitude and phase from an image using 2d dft?(fft2)

Do the same for considering two images and show mag1+phase1 and so on, here I have shown how you calculate the mag and phase for...

how can I seperate magnitude and phase from an image using 2d dft?(fft2)

Do the same for considering two images and show mag1+phase1 and so on, here I have shown how you calculate the mag and phase for...

4 days ago | 1

| accepted

Answered

I need to create letter K with 20 pixel by 20 pixel by plotting

"Now I want to know how to rotate this letter 90 degrees" n=5; % size of matrix x=[2 2 2 3 4 4 4 ]; % x-coordinate y=[1 2 3 ...

I need to create letter K with 20 pixel by 20 pixel by plotting

"Now I want to know how to rotate this letter 90 degrees" n=5; % size of matrix x=[2 2 2 3 4 4 4 ]; % x-coordinate y=[1 2 3 ...

4 days ago | 0

| accepted

Answered

For loop in image translation?

If you want to store in the cell array, may be this one: 3D cell array, due to multiple undefined variables, hence I can't check...

For loop in image translation?

If you want to store in the cell array, may be this one: 3D cell array, due to multiple undefined variables, hence I can't check...

5 days ago | 0

Answered

what does "Undefined function 'f_integration' for input arguments of type 'double' " mean

Because f_integration & K_matrix are not Matlab inbuilt functions, hence you have to defined both function file in the same dire...

what does "Undefined function 'f_integration' for input arguments of type 'double' " mean

Because f_integration & K_matrix are not Matlab inbuilt functions, hence you have to defined both function file in the same dire...

5 days ago | 1

| accepted

Answered

Write a loop that sums and subtracts elements with a lower and upper limit?

The thing i cannot implement is that the value should stop adding values to P_stored once the value lim_max = 500 is reached and...

Write a loop that sums and subtracts elements with a lower and upper limit?

The thing i cannot implement is that the value should stop adding values to P_stored once the value lim_max = 500 is reached and...

5 days ago | 0

Answered

Get (automatically) position of pixels that are white in my binary mask image

"Get (automatically) position of pixels that are white in my binary mask image" Let suppose im1 is a binary image [r c]=find(i...

Get (automatically) position of pixels that are white in my binary mask image

"Get (automatically) position of pixels that are white in my binary mask image" Let suppose im1 is a binary image [r c]=find(i...

6 days ago | 0

| accepted

Answered

How to solve "Index exceeds the number of array elements (39)."

The problem is here z0Le(i) = z0LtW(i-1); x0Le(i) = x0LtW(i-1); When the loop iterate for first i=1, then, in the else state...

How to solve "Index exceeds the number of array elements (39)."

The problem is here z0Le(i) = z0LtW(i-1); x0Le(i) = x0LtW(i-1); When the loop iterate for first i=1, then, in the else state...

7 days ago | 0

Answered

Capture Matrix Results from For Loop for Plotting - MATLAB

How can this possible, you are trying to plot i vs x, where i is scalar (single value) and x is vector having length 3. x = -...

Capture Matrix Results from For Loop for Plotting - MATLAB

How can this possible, you are trying to plot i vs x, where i is scalar (single value) and x is vector having length 3. x = -...

7 days ago | 0

Answered

vector is not overwritten after certain interation during loop

for a=1:n k=k0+num(:,a); stpx(a)= stpx_0+[stpx(k(1,1));stpx(k(2,1));stpx(k(3,1));stpx(k(4,1));stpx(k(5,1))]; stpy...

vector is not overwritten after certain interation during loop

for a=1:n k=k0+num(:,a); stpx(a)= stpx_0+[stpx(k(1,1));stpx(k(2,1));stpx(k(3,1));stpx(k(4,1));stpx(k(5,1))]; stpy...

7 days ago | 0

Answered

graph cuts result produce two image

Your question is still not clear, but I am trying to answer In the code, "if condition" true, then only it shows first figure wi...

graph cuts result produce two image

Your question is still not clear, but I am trying to answer In the code, "if condition" true, then only it shows first figure wi...

7 days ago | 0

| accepted