error unravel.c

please help me. unravel.c code of gonzalez error in my matlab. What's wrong?

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[Walter Roberson]

Note: that code is written to C99 standards and will not compile with earlier C.

Answer 1

[Image Analyst]

On line 33 you have a space between ! and =. It should be != with no space.

[Andi Juwandi Karmita]

thanks you sir.

please help me again how to fix it

mat2huff error

and this code im2jpeg

[Image Analyst]

Instead of hx=char(hx), do this

hx = sprintf('%d', hx);

[Andi Juwandi Karmita]

if true
  map = huffman(double(h));          % Make Huffman code map
hx = map(x(:) - xmin + 1);         % Map image
hx = sprintf('%d', hx) ;            % Convert to char array
hx = hx(:)';
hx(hx == ' ') = [];                % Remove blanks
ysize = ceil(length(hx) / 16);     % Compute encoded size
hx16 = repmat('0', 1, ysize * 16); % Pre-allocate modulo-16 vector
hx16(1:length(hx)) = hx;           % Make hx modulo-16 in length
hx16 = reshape(hx16, 16, ysize);   % Reshape to 16-character words
hx16 = hx16' - '0';                % Convert binary string to decimal
twos = pow2(15:-1:0);
y.code = uint16(sum(hx16 .* twos(ones(ysize, 1), :), 2))';

end

error sir, whats problem?

[Image Analyst]

I don't know why hx is a cell. What does this do:

whos hx
celldisp(hx)
hx = sprintf('%d', hx{1}) % Convert cell contents

[Andi Juwandi Karmita]

Thank you in advance . I've tried your suggestion of and it worked. but when I do I like the decompression process computer hangs and must be closed by force. I asked for his help. I use a code of gonzales, woods, and Eddins (im2jpeg, jpeg2im mat2huff, huff2mat, unravel.c) my estimation error occurs when the decompression process calling unravel.c. matlab does not give an error message and immediately hangs. sorry my english is very bad: D.