Detecting graphical elements in charts using predicted heatmaps
US12374146B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 21, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Dec 31, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/42
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An example system includes a processor to receive detected chart regions in a page of a document. The processor is to produce, via a graphical elements detector, predicted heatmaps and bounding boxes for graphical objects in the detected chart regions. The processor is also to apply chart type specific analysis algorithm to the predicted heatmaps and bounding boxes, to extract tabular chart data. The processor can then generate an output data file and a visualization based on the predicted heatmap and the extracted tabular chart data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.