An image processing system for finding a local minimum in a histogram of an image in order to define a threshold comprising steps of; Generating a table of density according to the order of number of pixels; Assuming that the density of maximal number of pixels of the table is one local maximum of higher or lower density; Searching another local maximum and the local minimum based on the assumption; Assuming that the density of maximal number of pixels of the table is another local maximum of lower or higher density; Searching another local maximum and the local minimum based on the second assumption; and Determining true local maximums and the local minimum reviewing the first and second searching.
申请公布号
DE68924190(D1)
申请公布日期
1995.10.19
申请号
DE1989624190
申请日期
1989.04.07
申请人
EZEL INC., TOKIO/TOKYO, JP;SHARP K.K., OSAKA, JP
发明人
KUMAGAI, RYOHEI C/O EZEL INC., SHINJUKU-KU TOKYO 160, JP