公开(公告)号：JPH09128490A

公开(公告)日：1997-05-16

申请号：JP28591296

申请日：1996-10-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BROWN MICHAEL KENNETH ,  HU JIANYING ,  TURIN WILLIAM

IPC: G06K9/62 ,  G06K9/34 ,  G06K9/70 ,  G06T7/00 ,  G10L15/18

Abstract: PROBLEM TO BE SOLVED: To provide a segment-oriented method for improving the trade-off between efficiency and precision for the handwritten character recognition system. SOLUTION: Shape information which is usable only through segment-like modeling is held by modeling selected segments, and the nonefficiency that all possible segments are modeled is evaded. A gap feature is defined which discriminates the spatial distance between successive strokes larger than a certain threshold value from the spatial distance between successive strokes smaller than the threshold value. A penalty evaluation point is added to an opposition hypothesis evaluation point showing a successive stroke where the spatial distance is larger than the threshold value to shift opposition hypothesis cumulative evaluation points toward the evaluation point showing that two successive strokes are discontinuous. A penalty is imposed on the opposition hypothesis evaluation point showing two successive strokes are continuous where the spatial distance is less than the threshold value.

公开(公告)号：JPH1091714A

公开(公告)日：1998-04-10

申请号：JP19893397

申请日：1997-07-24

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BOIE ROBERT ALBERT ,  TURIN WILLIAM

IPC: G06K7/00 ,  G06K7/10 ,  G06K7/14

Abstract: PROBLEM TO BE SOLVED: To reduce the inter-code interference independent of the S/N and also to reduce other types of blurs by adapting a scanned signal model to the measured or detected data signal by means of the deterministic expected value maximization algorithm and then decoding the data. SOLUTION: A label is scanned by a proper scanner (4), and the back scattered light y (t) sent from the label is measured by a photodetector which produces the electric signals based on the intensity of the measured light (5). Then the characteristic information included in the measurement data signal y (t) is decoded and decided (6). At the same time, a scanned signal model j (t, θ) is adapted to the measurement data signal y (t) by means of the deterministic expected value maximization algorithm (7). Then the encoded label data are translated from the scanned signal model j (t, θ) and the measurement data signal y (t) is decoded (8).