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abbxucy11


University of Cyprus

Active since 2016

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Question


How can i enter parameters in a dialog box and insert them in a GUI?
can i use inputdlg or does it get more complicated?

7 years ago | 0 answers | 0

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Question


How can i make a ROSE diagramm with 2 171x253 matrices?
i try to do it but i have this error: theta must be a vector. any ideas how to do it?

7 years ago | 0 answers | 0

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Question


How can i save the opticFlow parameters of farnebacks algorithm for every two frames?
the farnebacks algorithm only saves the parameters for the last two frames. i want the code to estimate the opticflow parameters...

7 years ago | 0 answers | 0

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answers

Question


How can i save the flow estimations of farnebacks method over the entire video?
Im using farneback's method on a video, but the final result is the parameters of opticflow which are flow.Magnitude and flow.Or...

7 years ago | 0 answers | 0

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Question


Im using farnebacks method to estimate the motion vectors of a video, but how can i find the mean value of vectors over the entire video?
What i want is to find the medium value of the velocity vectors for every orientation and i want to do this over the entire vide...

7 years ago | 0 answers | 0

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Question


How exactly farnebacks opticalflow method works?
Using matlab for farneback's method i have the flow parameter result that contains Magnitude,Orientation,Vx and Vy. Is these the...

7 years ago | 1 answer | 0

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Question


i have 2 axes in a gui that my 2 graphs are plotted. how can i plot the 2 graphs in a new window and then save them?
i use the following code in a function: axes(handles.axesrosediagram) handles.alf=transpose(handles.table) scatter(ha...

7 years ago | 1 answer | 0

1

answer

Question


how can i change the size and vectors spacing in motion vectors produced by farnebacks algorithm?
i want to be able to change the size and the space between the motion vectors. any ideas how to do it?

7 years ago | 0 answers | 0

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Question


I want to create a scatterplot with a matrix that contains 360 values of magnitudes and another matrix that contains degrees,how can i do it?
i have the matrix final_table that is 361x1 and contains magnitude values with order for 0 to 360 degrees and i want to create a...

7 years ago | 1 answer | 0

1

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Question


What does this mean? what is exactly the type Root? >>Error:Handles of type Root cannot be made the current Axes.
i declare at the opening function of my gui the axes as : handles.axesroi=0; And i use this : axes(handles.axesroi) under the ...

7 years ago | 1 answer | 0

1

answer

Question


How can i rotate an avi video?
is there a ready code for the rotation of a video?

7 years ago | 1 answer | 0

1

answer

Question


i want to make a for loop that goes like this for a=0:1:180 && 179:-1:-180 but it is not possible in matlab, any ideas how to do it?
i want to make a for loop that goes like this for a=0:1:180 && 179:-1:-180 but it is not possible in matlab, any ideas how to do...

7 years ago | 2 answers | 0

2

answers

Question


What does exactly orientation.flow represent in Farnebacks?
Between which vectors is the orientation?

7 years ago | 0 answers | 0

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answers

Question


i have a problem applying Farnebacks method on a grayscale video
i have a video that contains only gray and black and i apply the farnebacks method but i have an error at frameRGB = readFrame(...

7 years ago | 0 answers | 0

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Question


Why do i have this error? Frame must be 45 by 29, ERROR at using VideoWriter/writeVideo (line 344) Frame must be 54 by 31
i crop a video and then i save the croped video but it cant be written because of this error! any ideas how to solve it? With s...

7 years ago | 1 answer | 0

1

answer

Question


How can i use the same ROI for all the video frames and create a new roi movie?
I want to select a ROI on the first frame and then apply it to all the frames and create a new Roi movie

7 years ago | 0 answers | 0

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answers

Question


How can i measure a vector's size, angle and direction that i found using Farneback's method?
For this simple example of Farneback's method, how can i measure the vector's characteristics?

7 years ago | 1 answer | 0

1

answer

Question


How can i read a video and convert the first frame into an image?
img=VideoReader(filename); P=img.Path; nFrames=img.NumberOfFrames; for k=1 eikona=read(img,k); %figure...

7 years ago | 1 answer | 0

1

answer

Question


How can i extract the first frame of a video and save it as an image?
i use this code but it doesnt work. it has the error below, but im sure that the video is in the correct path. THE CODE: ...

7 years ago | 1 answer | 0

1

answer

Question


>> VideoReader Error using VideoReader (line 160) FILENAME must be specified.
I run the VideoReader.m and i have this error.. any ideas what is going wrong? >> VideoReader Error using VideoReader (line ...

7 years ago | 1 answer | 0

1

answer

Question


Error using VideoReader/init (line 607) The filename specified was not found in the MATLAB path. Any ideas how to fix that error?
Error using VideoReader/init (line 607) The filename specified was not found in the MATLAB path.

7 years ago | 1 answer | 2

1

answer

Question


How can i create a polar diagram with two matrices?
I have a matrix(39x80) with the angles in radians and a matrix(39x80) with the magnitutes, how can i create a polar diagram with...

7 years ago | 1 answer | 0

1

answer

Question


How to find the value of a matrix in a specific position?
I have a matrix A with the positions (361x2) stored and i want to find the values of another matrix B in the specific positions ...

7 years ago | 2 answers | 0

2

answers

Question


I have a matrix with values from -180 to 180 and i want to find all the places where each value is and then save them in a new matrix, how can i do it?
I want to create a for loop that goes for values -180:1:180 and finds all the locations(i,j) for each value. e.g i want to find...

7 years ago | 2 answers | 0

2

answers