Matakuliah
Tahun
: U0574 / DIGITAL COMPOSITING I
: 2008
Masking and Alpha Essentials
Pertemuan 02
Masking and Alpha Essentials
• Color channels RGB
• Additional channel  alpha channel
• This channel is also known as the 'matte' channel
• Define the transparency of an object
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Bina Nusantara
Channels and Alpha channel Essentials
• Alpha channel  black and white image
• Black  value = 0
• White  value = 1
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Color channel (each in black/white value)
R  Red
G  Green
B  Blue
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Bina Nusantara
Channels and Alpha channel Essentials
• Alpha channel  black and white image
• Black  value = 0
• White  value = 1
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Color channel (each in black/white value)
R  Red
G  Green
B  Blue
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Bina Nusantara
Channels and Alpha channel Essentials
Track Matte
• Grayscale or black and white images can be as an
alpha matte or Luminance mate
• Generate Grayscale images  image selection
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Bina Nusantara
Masking Essentials
Masking
• Basic masking  color correction purpose,
vignetting, etc
• The use of pen tool  advanced masking,
rotoscoping, color correction purpose
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Bina Nusantara
Blending mode
Blending mode
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Exactly the same with the Photoshop blending
Enhance look of a footage
Color enhancement
Footage combining
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Bina Nusantara
Footage manipulation
• Stamp
• Color correction
• Filter
9
Bina Nusantara