Image compression channel not working

Hi im working on a image compression code for matlab below is the code

clear all;

% Tx Rx Setup
enc = comm.RSEncoder;
mod = comm.DPSKModulator('BitInput',false);
chan = comm.AWGNChannel(...
                'NoiseMethod','Signal to noise ratio (SNR)','SNR',10);
demod = comm.DPSKDemodulator('BitOutput',false);
hDdecec = comm.RSDecoder;
errorRate = comm.ErrorRate('ComputationDelay',3);

%compression
X = dctcompr ("Picturetest.jpg",19200,"OutputPicturetest.jpg")

%Reading and converting to  digital data of image (working)
im=imread('OutputPicturetest.jpg');
imshow(im)
pause(1)
IMAGEBIN=im2bw(im,0.4);
imshow(IMAGEBIN);

%channel(not working, incomplete from project specs)
encodedData = step(enc, IMAGEBIN(:,[1]));
modSignal = step(mod, encodedData);
receivedSignal = step(chan, modSignal);
demodSignal = step(demod, receivedSignal);
receivedSymbols = step(hDdecec, demodSignal);
errorStats = step(errorRate, data, receivedSymbols); 

%merge decoded column matrices into one

%mask the merged matrix to original image to simulate conversion(working)
maskedImage=uint8(IMAGEBIN).*im;

%show image and save(working)
imshow(maskedImage);
imsave;

The image "Picturetest.jpg" is a 1080p photo from the internet

for compression, i am using a function made by Luigi rosa from file exchange

Currently my code is having problems on the channel part. When i run the code, this error message pops up:

Error using IntegerRSEncoder/step
The input data type must
not be Boolean.

Error in comm.RSEncoder/stepImpl (line 341)
        y = step(obj.cIntRSEnc, x);
        

i would like to ask if there is any way to resolve this issue?

[KALYAN ACHARJYA]

Have you observed the error -

"The input data type must not be Boolean"

In the code-

IMAGEBIN=im2bw(im,0.4);

[Matt Alvarez]

is it possible to convert the image into a format that can be used in the channel part?

Answer 1

[Walter Roberson]

IMAGEBIN=im2bw(im,0.4);

im2bw returns logical data

encodedData = step(enc, IMAGEBIN(:,[1]));

That kind of encoder does not accept logical by default. When you construct the encoder set BitInput to true

https://www.mathworks.com/help/comm/ref/comm.rsencoder-system-object.html