Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1991-08-30
1992-12-15
Coles, Sr., Edward L.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 80, H04N 146
Patent
active
051722232
ABSTRACT:
According to a method and apparatus for processing a color image, three primary color signals are input, and the input three primary color signals are processed to obtain three color reproduction signals and a black reproduction signal. In order to obtain the black reproduction signal, a value corresponding to a minimum value of the three primary color signals is obtained, and the value is transformed by a continuous function having a downwardly convex shape, thereby defining a transformed value as the black reproduction signal.
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Izumizaki Masami
Suzuki Akio
Takada Yoshihiro
Canon Kabushiki Kaisha
Coles Sr. Edward L.
Vu Kim Yen
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