Data compression techniques ppt

  • What do you mean by data compression techniques design the presentation layer?

    The data encryption at the transmission end as well as the decryption at the receiver end is managed by the presentation layer.
    In order to reduce the number of bits to be transmitted, the presentation layer performs the data compression.
    It increases efficiency in case of multimedia files such as audio, video etc..

  • Compression is an effective massage technique performed by laying hands over a muscle area and pushing down onto the tissues.
    Hands are then lifted and moved to a different area and then repeated.
    The pressure of compressions can range from light to very deep.
  • The data encryption at the transmission end as well as the decryption at the receiver end is managed by the presentation layer.
    In order to reduce the number of bits to be transmitted, the presentation layer performs the data compression.
    It increases efficiency in case of multimedia files such as audio, video etc.

What are the different types of data compression techniques?

Data Compression Techniques Mainy all the techniques are divided in two basic types.
Lossless Compression Lossy Compression Lossless Compression Technique As per its name, No data loss. reconstruct the original message exactly from the compressed message.
Generally used for text files, spreadsheet files, important documents.

How does model based compression work?

(e g

, the fact that faces have two eyes and one nose)

The more information is shared in the model, the less need be transmitted with any given data set

Like wavelet compression, model-based compression works by characterizing data in terms of a deeper underlying generator


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