how to convert an image into bits???

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user06
user06 on 24 Feb 2015
Answered: Walter Roberson on 18 Jan 2022
how we can convert an image into bits ?? and that bits back to image?
  2 Comments
user06
user06 on 25 Feb 2015
actually i want to insert the image bits into different image. so i need to convert the image into binary bits..

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Answers (5)

Shoaibur Rahman
Shoaibur Rahman on 24 Feb 2015
It is not clear to me exactly what is your goal? Are you trying to convert image pixels into binary bits? If so, you can use dec2bin for that, and bin2dec to get your image back.
I_in = your image...
% encoding image into array of bits
B = dec2bin(I_in);
C = reshape(B',1,numel(B)); % converted into bits
% decoding image from bits
D = reshape(C,size(B,2),size(B,1));
I_out = reshape(bin2dec(D'),size(I_in))
  16 Comments
Walter Roberson
Walter Roberson on 25 Nov 2021
https://www.mathworks.com/matlabcentral/answers/180075-how-to-convert-an-image-into-bits#answer_169133 shows how.

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Image Analyst
Image Analyst on 24 Feb 2015
It's already in bits, as are all numbers in computers.
  7 Comments
Image Analyst
Image Analyst on 30 Jun 2021
"actually i m working on watermarking"
See my atttached demo on Least significant bit watermarking.

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Image Analyst
Image Analyst on 25 Nov 2021
If you want to view bitplanes 0 through 7, as binary images, see my attached demo.

Andy Paulo Ureña
Andy Paulo Ureña on 18 Jan 2022
Hello there! I hope you can help me with this question... I'm simulating a Digital Comm System, so i want to transmit an image and for that i converted that image into a bitstream, i used "imbinarize" function and reshape the matrix into a row vector for the "transmission" which function should i use to make the opposite process for the recosntruction of the image? Thanks!

Walter Roberson
Walter Roberson on 18 Jan 2022
reshape() to reconstruct the image. The remote side will need to know the image size, so either the size will need to be fixed or else you will need to transmit size information.
Note that your process will end up with a black and white image. If you want grey or color then you will need to use something different than imbinarize

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