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in this video we will look at the lzw coding or the Lempel Ziv welsh compression algorithm this algorithm was proposed initially by limbal and save and later some improvements were done by Welsh now it is known as Lamba z welsh algorithm in lamb balls if Welsh coding we actually focuses on the spatial redundancy of animation so you consider this image where you can see that several pixels in densities are repeating one after the other and if we combine these two 127 together and if I assign a single symbol for that then in later in my image if a combination of to 127 happens then I can replace that combination by using just this symbol X similarly if I have a combination of for 127 together and if I just coat it with Y then later in my image if a combination of for 127 comes then I can replace that with a symbol Y so you can see that here we can have you can see that there are 4 127 repeating here so that can be replaced by using a single symbol Y and in lcw coding the coding is actual
