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PERTEMUAN KE 10 – KOMPRESI CITRA

PENGOLAHAN CITRA

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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R

P

S

METODE KUANTISASI

01

RASIO KOMPRESI

02

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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METODE KUANTISASI

01

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

Metode Kuantisasi

adalah metode kompresi yang dilakukan

dengan mengurangi jumlah bit yang dibutuhkan untuk merepresentaikan citra

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Metode ini dapat mengurangi ukuran file secara signifikan, tergantung ukuran file yang diinginkan/dituju

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

Metode ini merupakan salah satu Metode Lossy,�dimana terdapat data yang hilang pada citra hasil kompresi.

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Kelemahan metode pemampatan Kuantisasi adalah banyaknya informasi yang hilang,��tapi kehilangan informasi ini dapat diminimalkan dengan menjamin

bahwa tiap kelompok mempunyai jumlah pixel yang hampir sama.

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

Langkah-langhkah :

  1. Buat Histogram dari citra semula
  2. Identifikasi n buah kelompok di dalam histogram sehingga setiap kelompok memiliki kira-kira P/n buah pixel
  3. Nyatakan setiap kelompok dengan derajat keabuan 0 sampai n-1
  4. Lakukan proses encode dengan derajat keabuan yang baru

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

Contoh Soal :

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

  1. Buat Histogram Citra

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

2. Identifikasi n buah kelompok di dalam histogram sehingga setiap kelompok memiliki kira-kira P/n buah pixel

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

3. Nyatakan setiap kelompok dengan derajat keabuan 0 sampai n-1

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

4. Lakukan proses encode dengan derajat keabuan yang baru

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

5. Lakukan perhitungan Nisbah Pemampatan

METODE KUANTISASI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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RASIO KOMPRESI

02

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

Rasio kompresi adalah ukuran yang menunjukkan seberapa besar data berhasil diperkecil melalui proses kompresi.

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Rasio kompresi membandingkan ukuran file sebelum dan sesudah kompresi��Rasio kompresi merupakan kebalikan dari Nisbah Pemampatan.

RASIO KOMPRESI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

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Pada Rasio ini, artinya

File asli 4 kali lebih besar dari file hasil kompresi, atau ukuran file berhasil diperkecil hingga ¼ dari ukuran awal.

RASIO KOMPRESI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

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Kebalikan dari Rasio Adalah Tingkat Kompresi/Nisbah Pemampatan/Compression Rate

RASIO KOMPRESI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

RASIO KOMPRESI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

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Faktor yang mempengaruhi :

RASIO KOMPRESI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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  • Input the text content you want according to the content you need, and input the text and other information.Input the text content you want according to the content you need, and input the text and other information.

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  • Input the text content you want according to the content you need, and input the text and other information.

20NN

RASIO KOMPRESI

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

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Tim Penyusun:

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2.

3

TERIMA

KASIH

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA

PROGRAM STUDI INFORMATIKA

UNIVERSITAS GUNADARMA