H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/4
H04N 1/40 (2006.01) H04N 1/393 (2006.01)
Patent
CA 1306052
PROCOSS AND APPARATUS FOR REDUCING PICTURE WITH FINE LINE DISAPPEARANCE PREVENTION ABSTRACT OF THE DISCLOSVRE A process for reducing a picture by determining monochrome data of converted picture pixels according to logical calculations based on monochrome data of original picture pixels by using divisional regions o a picture area according to a reduction rate, for avoiding disappearance of fine lines from the converted picture. The process includes the steps of: successively receiving monochrome data of original picture pixels in the vicinity of a converted picture pixel; producing data of a line susceptible to disappearance, such data being necessary for detecting pixels along a line in the converted picture which could disappear from the converted picture due to picture conversion; discrimi- nating regions in which the converted picture pixels are located; calculating monochrome data of a converted picture pixel based on the genexated data a line susceptible to disappearance, data o discrimination of regions in which the converted picture pixels ar located, and monochrome data of the original picture pixels; and producing a signal indicating the monochrome data;of the converted picture pixel according to the calculation of monochrome data of the converted picture pixel.
593928
Fujitsu Limited
Mcfadden Fincham
LandOfFree
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