Golomb matlab code
时间: 2023-08-24 14:04:32 浏览: 51
Sure! Here is an example MATLAB code for encoding and decoding using Golomb coding:
```matlab
% Golomb encoding
function encoded = golombEncode(input, m)
encoded = [];
% Calculate the quotient and remainder
quotient = fix(input / m);
remainder = mod(input, m);
% Encode the quotient using unary code
encoded = [encoded, ones(1, quotient), 0];
% Encode the remainder using binary code
b = ceil(log2(m));
binary = dec2bin(remainder, b);
encoded = [encoded, zeros(1, b-length(binary)), binary];
end
% Golomb decoding
function decoded = golombDecode(encoded, m)
decoded = [];
idx = 1;
% Decode the quotient using unary code
quotient = 0;
while encoded(idx) == 1
quotient = quotient + 1;
idx = idx + 1;
end
% Decode the remainder using binary code
b = ceil(log2(m));
remainder = bin2dec(num2str(encoded(idx:idx+b-1)));
% Calculate the decoded value
decoded = quotient * m + remainder;
end
% Test the Golomb encoding and decoding
input = [3, 7, 2, 5, 4]; % Input sequence to encode
m = 4; % Parameter for Golomb coding
encoded = golombEncode(input, m);
decoded = golombDecode(encoded, m);
% Display the results
disp('Input sequence:');
disp(input);
disp('Encoded sequence:');
disp(encoded);
disp('Decoded sequence:');
disp(decoded);
```
In this code, the `golombEncode` function takes an input value and a parameter `m` as arguments and returns the Golomb encoded sequence. The `golombDecode` function takes the encoded sequence and the parameter `m` as arguments and returns the decoded sequence.
The code also includes a test case where an input sequence is encoded using Golomb coding with a given `m` value. The encoded sequence is then decoded, and the original and decoded sequences are displayed for comparison.
You can modify the `input` array and the `m` value according to your requirements to test different scenarios.