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Alber


Last seen: 3 years ago |  Active since 2020

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Estudiante del Grado de Ingeniería en Tecnologías de la Telecomunicación.

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How to represent a complex function in modulo
Hi, I would like to represent this function where w goes from 0 to 250 kHz and B is 1. My code is as follows: w = [0:1:249]; ...

3 years ago | 1 answer | 0

1

answer

Question


How can I calculate gray levels?
Black and white TV broadcasts occupied a bandwidth of the image signal of approximately 4.5MHz (without considering the vestigia...

3 years ago | 0 answers | 0

0

answers

Question


Create a grid on an image
Hello, this is my code: for P = shaping % Position beacon img(1:n, 1:n,1+flag) = 255; img(end-n:end, end-n:end,1...

4 years ago | 1 answer | 0

1

answer

Question


Count the number of items that exceed a threshold
Hello, I want to create a variable called 'proportion' which is defined as the number of pixels that exceed the threshold, of th...

4 years ago | 0 answers | 0

0

answers

Question


How to create a blue color gradient
Hello, I want to create a 4K image (3840 x 2160 pixels) that has the blue color gradient from 0 to 255, with its 255 levels. Som...

4 years ago | 3 answers | 0

3

answers

Question


Create an image filter
I want to create a filter that looks like this: I would like to create a filter that goes from 0 to alpha, then go to -alpha an...

4 years ago | 1 answer | 0

1

answer

Question


How can I perfom an interpolation?
Hello, I have a code called codeAlpha, which has a value range of -1 to 1. My buffer is called frameBuffer and it has a size of ...

4 years ago | 1 answer | 0

1

answer

Question


Create a video from frames taken 5 by 5
Hello, I have this function to create a video: function [video] = writeBufferToFinalVideo(buffer,fps) video = VideoWriter('pru...

4 years ago | 1 answer | 0

1

answer

Question


Enter values into a FIFO array
Hello, I have an array called frameBuffer = zeros (height, width, numChannels, framesPerSymbol); and a video. The parameters...

4 years ago | 1 answer | 0

1

answer

Question


Create a video from a 4D array
Hello, I have a problem in this code. function [] = writeBufferToFinalVideo(buffer) video = VideoWriter('example','MPEG-4'); ...

4 years ago | 2 answers | 0

2

answers

Question


Insert elements into a 4D array
Hello, I have a 4-dimensional buffer called: frameBuffer = zeros (width, height, numChannels, framesPerSymbol); in which I w...

4 years ago | 1 answer | 0

1

answer

Question


How can I use the ColorChannels function of VideoWriter in VideoReader?
I am currently making a code in which an input video comes in and I need to check the number of color channels it has. The funct...

4 years ago | 1 answer | 0

1

answer

Question


Interpolation filter in video
Hello, I've been looking at the documentation on the 'interp' function, which is the function that I think I should use. My p...

4 years ago | 1 answer | 0

1

answer

Question


How to add image 'x' to even frames and one image 'y' to odd frames
Hello, I have a video that we will call 'x' and some images that we will call 'output_cross_alfa' and 'output_cross_Nalfa'. M...

4 years ago | 1 answer | 0

1

answer

Question


How to create a chessboard?
I have created a chessboard function that goes from values 1 to -1, where its parameters are M (width of the image), N (height),...

4 years ago | 1 answer | 0

1

answer