G06V 40/382
Preprocessing
Official title: {Preprocessing; Feature extraction}
G06V40/382 (Preprocessing) appears on 63 US grants and 76 published applications in this corpus.
Search patents in G06V- Granted patents
- 63
- Published applications
- 76
- Assignees
- 53
- Inventors
- 140
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 2 | 3 |
| 2012 | 0 | 1 |
| 2013 | 1 | 3 |
| 2014 | 3 | 3 |
| 2015 | 1 | 6 |
| 2016 | 3 | 8 |
| 2017 | 6 | 3 |
| 2018 | 7 | 11 |
| 2019 | 7 | 7 |
| 2020 | 8 | 8 |
| 2021 | 4 | 4 |
| 2022 | 5 | 4 |
| 2023 | 2 | 6 |
| 2024 | 3 | 1 |
| 2025 | 6 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Feature effectiveness assessment method and apparatus, electronic device, and storage medium24 Mar 2026US 12,585,989 B2Tencent Technology (Shenzhen) Company Limited
- Generating virtual avatars to optimize video data transmission25 Nov 2025US 12,482,181 B2International Business Machines Corporation
- Character recognition model training method and apparatus, character recognition method and apparatus, device and storage medium23 Sep 2025US 12,424,010 B2Beijing Baidu Netcom Science Technology Co., Ltd.
- Signature verification15 Jul 2025US 12,361,105 B2Microsoft Technology Licensing, LLC
- Method and apparatus for authenticating handwritten signature based on multiple authentication algorithms13 May 2025US 12,299,095 B2Secuve Co., Ltd.
- Systems and methods for providing continuous signature management6 Nov 2025US 2025/0343839 A1Wells Fargo Bank, N. A.
- Signature verification18 Sep 2025US 2025/0291889 A1Microsoft Technology Licensing, LLC
- Methods and systems for adaptive, template-independent handwriting extraction from images using machine learning models5 Jun 2025US 2025/0182530 A1
- Generating virtual avatars to optimize video data transmission1 May 2025US 2025/0139884 A1International Business Machines Corporation
- Handwriting geometry recognition and calibration system by using neural network and mathematical feature25 Apr 2024US 2024/0134938 A1Sunia Pte. Ltd.
Most cited
By later US patents
- Methods and systems for slant compensation in handwriting and signature recognition80US 7,620,244 B1Motion Computing, Inc. · 2009
- Method and apparatus for lossless compression of signature data58US 6,011,873 APenware, Inc. · 2000
- Methods and apparatus for signature verification37US 5,109,426 ANational Research Development Corporation · 1992
- Reduction of transaction fraud through the use of automatic centralized signature/sign verification combined with credit and fraud scoring during real-time payment card authorization processes29US 8,885,894 B22014
- Apparatus and method for digitizing and segmenting a handwriting movement based on curvilinear and angular velocities13US 5,077,802 AEcole Polytechnique · 1991