H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/16, 178/3
H04N 1/04 (2006.01) G06T 3/40 (2006.01) H04N 1/40 (2006.01) H04N 1/193 (2006.01)
Patent
CA 1166344
-1- ABSTRACT OF THE DISCLOSURE An image signal processing architecture for image filtering using high and low image resolution scanning arrays to scan a document original. The image pixels produced by the high resolution scanning array are analyzed to determine the presence of high frequency halftone image pixels. Where high frequency halftone image pixels are not found, the image pixels are filtered to enhance the signal content and thereafter thresholded adaptively. Where high frequency halftone image pixels are determined to be present, the pixels produced by the low resolution array are descreened and thereafter rescreened at different screen frequency. A control switch permits the user to process continuous tone images directly. In the principal embodiment, both high and low resolution scanning arrays are disposed on a common substrate to form a unitary structure. In a second embodiment, separate scanning arrays are spaced at preset distances from the object plane to provide the requisite high and low image reading resolutions. To correlate image resolutions between the scanning arrays interpola- tion means are provided to interpolate additional image pixels in the output of the low resolution array.
376698
Lavallee Pierre A.
Stoffel James C.
Sim & Mcburney
Xerox Corporation
LandOfFree
Multi-resolution image signal processing apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-resolution image signal processing apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-resolution image signal processing apparatus and method will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-156289