Image reading device having moire depressing unit

Details Image reading device having moire depressing unit Image reading device having moire depressing unit

1991-02-05

1992-12-22

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358426, 382 43, H04N 1415

Patent

active

051737884

ABSTRACT:
In an image reading device for reading an original image, an original image is picked up and converted into two-dimensional positional image data represented in a two-dimensional positional coordinate system. The two-dimensional positional image data is further converted into two-dimensional spatial frequency image data represented in a two-dimensional spatial frequency coordinate system, and then into high frequency image data and low frequency image data. The high frequency image data is subjected to moire component selecting and depressing operations to correct the high frequency image data whose moire components are depressed, and then the low frequency image data and the corrected high frequency image data are reconverted into corrected two-dimensional positional image data, thereby reproducing the original image with no moire.

REFERENCES:
patent: 5051840 (1991-09-01), Watanabe et al.
patent: 5109451 (1992-04-01), Aono et al.

Affiliated with

Also associated with

Rating

Image reading device having moire depressing unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reading device having moire depressing unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reading device having moire depressing unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-977670