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Transformasi geometri

Transformasi geometri. M. Iqbal Habibie. 2DB23- D3 Manajemen Informatika. Warna citra dan Model Warna. Model warna: cara menampilkan warna2 & hu-bungan di antaranya Sistem pengolahan citra menggunakan model warna yg ber-beda2 : industri penerbitan gambar berwarna -> CMY

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Transformasi geometri

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  1. Transformasi geometri M. Iqbal Habibie 2DB23- D3 Manajemen Informatika

  2. Warna citra dan Model Warna • Model warna: cara menampilkan warna2 & hu-bungan di antaranya • Sistem pengolahan citra menggunakan model warna yg ber-beda2 : • industri penerbitan gambar berwarna -> CMY • monitor CRT & komputer grafis -> RGB • sistem yg memanipulasi hue, sat & int ->HSI • Penglihatan manusia memiliki 3 'kerucut'  model warna 3 nilai (tristimulus)

  3. Model RGB digambarkan sbg kubus 3-dimensi dgn merah, hijau & biru pd sudut2 ke-3 sumbu : hitam pd titik awal (origin) putih pd ujung diagonal yg berlawanan derajat keabuan pd garis diagonal hitam ke putih pd sistem grafik 24-bit  8 bit per saluran warna:merah = (255, 0, 0) atau (1, 0, 0) Konversi RGB mjd derajat keabuan: Intensitas tingkat keabuan = 0.299R + 0.587G + 0.114B Intensitas tingkat keabuan = 0.333R + 0.333G + 0.333B RGB (red green blue)

  4. CMY = komplemen dr RGB = subtract primaries Konversi antara CMY dan RGB cyan menyerap red : C=1.0 – R R=1.0-C magenta menyerap green: M=1.0-G G=1.0-M yellow menyerap blue : Y=1.0-B B=1.0-Y CMY (cyan magenta yellow)

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