Patents
US 11386636 B2: Image preprocessing for optical character recognition
- Granted
- 2022-07-12
- Filed
- 2019-12-20 application 16724028
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A captured image contains a region of interest (ROI) including a plurality of characters to be recognized as text, and non-ROI content to be excluded from the OCR. The captured image is preprocessed to detect and locate the ROI in the captured image, and to determine a boundary of the ROI, including transforming the captured image to a first feature descriptor representation (FDR), and performing a comparison between the first FDR and at least one ROI template that includes at least a second FDR of a representative ROI image. The preprocessing produces an output to be provided to an OCR engine to perform autonomous OCR processing of the ROI while ignoring the non-ROI content based on the determined boundary of the ROI.
Source: PVGPATDIS, file of 2026-04-10 (ipg220712.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Datalogic USA, Inc. 86 patents | US company or organization | Eugene, OR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Luis Goncalves | Pasadena, CA | 36 | PVGPATDIS, file of 2026-04-10 | |
| Filippo Mambelli | Pasadena, CA | 2 | PVGPATDIS, file of 2026-04-10 | |
| Paolo Gentili | Varano-Cerretino, IT | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06V | Image or video recognition or understanding | G06V20/63 | PVGPATDIS, file of 2026-04-10 |
| G06F | Electric digital data processing | G06F18/22 | PVGPATDIS, file of 2026-04-10 |
| G06T | Image data processing or generation, in general | G06T3/40 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.