Image processing apparatus, image processing method, and storage medium
US10354352B2 · kind B2 · utility
2Cited by
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11Claims
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Key dates
| Filing date | Jun 22, 2017 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Jun 22, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one or more embodiments, an image processing apparatus obtains a shade image representing shade components included in a multi-valued image obtained by capturing an image of a document. The shade components depend on an image capture environment. The apparatus binarizes a pixel value of a target pixel in the multi-valued image based on a pixel value of a corresponding pixel in the shade image at coordinates identical to those of the target pixel to generate a pixel value representing white or black. One or more image processing methods and storage mediums are also provided herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.