Image modulation methods and devices using image filters, image parameters, quality scores, and grayscale clusters
US12314813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2023 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Sep 29, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30168
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device obtains a first image, including an image area enclosing a barcode, selects an image filter having a filter parameter, and iteratively processes the first image until a quality score satisfies an image modulation condition. A set of filters and associated filter parameters are determined for processing additional barcode images based on at least the image filter and the filter parameter corresponding to the quality score that satisfies the image modulation condition. During each iterative cycle, the image area is processed by the image filter having the filter parameter to generate a plurality of grayscale values, determine the quality score that measures the quality of two grayscale clusters grouping the grayscale values of the image area, determine whether the quality score satisfies the image modulation condition, and adjust the filter parameter of the image filter when the quality score does not satisfy the image modulation condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.