Title:
TWO-DIMENSIONAL SEQUENCE FILTER CIRCUIT
Document Type and Number:
Japanese Patent JP2587555
Kind Code:
B2
Abstract:
PURPOSE: To exactly extract desired picture data by a small scale circuit constitution by arranging the picture data in each partial area in the order of a picture value by a one-dimensional sorter circuit, and comparing the maximum values or the minimum values in the plural partial areas by a prescribed number of times.
CONSTITUTION: The picture data having a central value are selected from an area 20 constituted of total 9 picture elements of three picture elements in the direction and three picture elements in the column direction. The three picture data are arranged in the order of the picture value by a one dimensional sorter circuit 11, and latched by a latch circuit. The maximum values of the picture data latched by the three latch circuits 12, 13, and 14 are detected by a maximum value detecting circuit 15. Then, while the maximum values are counted by a counter 16, they are pushed out only by the necessary number of times by a shift circuit. Therefore, for example, the desired data such as the some number-th data from the maximum value can be exactly detected.
Inventors:
YONEDA HIDEKI
Application Number:
JP28607591A
Publication Date:
March 05, 1997
Filing Date:
October 31, 1991
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
G06F7/02; G06F7/24; G06T5/20; H04N5/14; (IPC1-7): G06T5/20; G06F7/02; G06F7/24
Domestic Patent References:
| JP1288920A |
Attorney, Agent or Firm:
Yoshio Kosugi (1 person outside)