Convert signal to image??

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Tariq Nazzal 2012-11-5

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评论： Tariq Nazzal 2021-2-7

Hy,

I read analog signal from external device "ECG" by serial rs232 connection, I need to cut this signal to stored as image by code in matlab because my m file program is depended of Image processing not signal processing and my project is about image processing, so I can't write my program by signal processing.

my problems is:

1- read the signal from serial port.

2- convert this signal to image, and stored this image in current folder of matlab.

3- Please, I need answers for the last problems as codes not as Block. because I work at M file.

thanks for everyone try to help me,

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回答（2 个）

Image Analyst 2012-11-5

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You could use reshape() to turn your 1D signal into a 2D image, though I don't know if that would help. Anyway, many or most functions in the Image Processing Toolbox work on 1D images (just a single row or column of "pixels") so you may not need to do anything at all with your 1D ECG signal..

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Tariq Nazzal 2012-11-10

one other question, Please

Is there a code work as snapshot automatically? I mean when I plot the signal I need code to work as snapshot, but automatically

Walter Roberson 2012-11-10

getframe()

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kh rezaee 2021-2-6

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https://ww2.mathworks.cn/matlabcentral/answers/52806-convert-signal-to-image#answer_616267

在 MATLAB Online 中打开

Use spectogram functions of signal to convert as an image. I guess you need this method to process images using deep learning. It should be noted that you must segment the signal before applying it to the network. Use these functions:

spectrogram(1DSignal)
pspectrum(1DSignal,FS,'spectrogram')
wvd(1DSignal,FS,'smoothedPseudo')

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Walter Roberson 2021-2-7

wvd() was introduced in R2018b, in the Signal Processing Toolbox. pspectrum needs R2017b (and so would not work in R2017a)

Tariq Nazzal 2021-2-7

A lots happened since 2012. I graduated. I worked in different fields until I ended as a lift engineer. I got married. I moved to the UK and now still working as a lift engineer in the UK and had nothing to do with image processing and matlab in general. I even reset my password to write this comment. I remember I solved my issue at the time anyway and can’t remember how. Maybe the positive points now I have a good English not rubbish one. And I don’t use this picture as a profile picture anymore. I do have lots better lol.

Thanks guys it’s nice to have a notification for something you asked from a long time

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