Title:
STRIPE DETECTOR
Document Type and Number:
Japanese Patent JP3618742
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a stripe detector capable of calculating stripe featured values including directions of stripes.
SOLUTION: The stripe detector includes a rectangular block division part 21 which divides an image of optical stripes of an imaged inspection target into blocks constituted of a plurality of pixel sets, a DCT processing part 22 which performs discrete cosine transform to information in the blocks divided by the rectangular block division part 21, a stripe candidate block extraction part 24 which extracts stripe candidate blocks by every conversion coefficient based on a processing result by the DCT processing part 22 and a filter processing part 25 by every direction which performs filter processing in consideration of directivity to the stripe candidate blocks by every conversion coefficient, which are extracted by the stripe candidate block extraction part 24.
Inventors:
Yoshiyoshi Shigeyama
Application Number:
JP2004178680A
Publication Date:
February 09, 2005
Filing Date:
June 16, 2004
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G01B11/30; G01B11/25; G06T7/40; (IPC1-7): G01B11/25; G06T7/40
Domestic Patent References:
| JP7260457A | ||||
| JP9265537A | ||||
| JP10048149A | ||||
| JP6133160A | ||||
| JP6176144A | ||||
| JP7059086A | ||||
| JP9061125A | ||||
| JP10132535A | ||||
| JP2000283741A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai