Bagaimana untuk melaksanakan algoritma pemampatan imej dalam C#

public byte[] RleCompress(byte[] image) { List compressedImage = new List(); int count = 1; byte current = image[0]; for (int i = 1; i < image.Length; i++) { if (image[i] == current) { count++; } else { compressedImage.Add((byte)count); compressedImage.Add(current); count = 1; current = image[i]; } } compressedImage.Add((byte)count); compressedImage.Add(current); return compressedImage.ToArray(); } public byte[] RleDecompress(byte[] compressedImage) { List decompressedImage = new List(); for (int i = 0; i < compressedImage.Length; i += 2) { byte count = compressedImage[i]; byte color = compressedImage[i + 1]; for (int j = 0; j < count; j++) { decompressedImage.Add(color); } } return decompressedImage.ToArray(); }

public byte[] LzwCompress(byte[] image) { Dictionary dictionary = new Dictionary(); List compressedImage = new List(); string current = image[0].ToString(); for (int i = 1; i < image.Length; i++) { string next = current + image[i]; if (dictionary.ContainsKey(next)) { current = next; } else { compressedImage.Add(dictionary[current]); dictionary.Add(next, dictionary.Count + 1); current = image[i].ToString(); } } compressedImage.Add(dictionary[current]); byte[] compressedBytes = new byte[compressedImage.Count * 2]; for (int i = 0; i < compressedImage.Count; i++) { compressedBytes[i * 2] = (byte)(compressedImage[i] >> 8); compressedBytes[i * 2 + 1] = (byte)(compressedImage[i] & 0xff); } return compressedBytes; } public byte[] LzwDecompress(byte[] compressedImage) { Dictionary dictionary = new Dictionary(); List decompressedImage = new List(); int nextCode = 256; for (int i = 0; i < nextCode; i++) { dictionary.Add(i, ((char)i).ToString()); } int current = (compressedImage[0] << 8) + compressedImage[1]; decompressedImage.AddRange(Encoding.Default.GetBytes(dictionary[current])); for (int i = 2; i < compressedImage.Length; i += 2) { int code = (compressedImage[i] << 8) + compressedImage[i + 1]; if (!dictionary.ContainsKey(code)) { string entry = dictionary[current] + dictionary[current][0]; dictionary.Add(code, entry); decompressedImage.AddRange(Encoding.Default.GetBytes(entry)); } else { decompressedImage.AddRange(Encoding.Default.GetBytes(dictionary[code])); } current = code; } return decompressedImage.ToArray(); }