US 12,430,724 B2 · Autonomously removing scan marks from digital documents utilizing content-aware filters

Abstract

The present disclosure relates to systems, non-transitory computer-readable media, and methods for implementing content-aware filters to autonomously remove scan marks from digital documents. In particular implementations, the disclosed systems utilize a set of targeted scan mark models in a scan mark removal pipeline. For example, each scan mark model includes a corresponding content-aware filter configured to identify document regions that match a designated class of scan marks to filter. Examples of scan mark models include staple scan mark models, punch hole scan mark models, and page turn scan mark models. In certain embodiments, the disclosed systems then use the scan mark models to generate mark-specific masks based on document input features. Additionally, in some embodiments, the disclosed systems combine the mark-specific masks into a final segmentation mask and apply the final segmentation mask to the digital document for correcting the identified regions with scan marks.

Claims20

Dependent claims

A non-transitory computer-readable medium comprising instructions that, when executed by at least one processor, cause a computing device to:

generate, from a digital document comprising one or more scan marks, a margin boundary, an OCR mask comprising a binary image having regions for detected text, and digital contours defining regions within the digital document;
generate, utilizing a staple scan mark model, a staple mask from the margin boundary, the OCR mask, and the digital contours by applying a threshold region area for staples and a threshold region width and height for staples;
generate, utilizing a punch hole scan mark model, a punch hole mask from the margin boundary, the OCR mask, and the digital contours by applying a threshold region area for punch holes and a threshold region width and height for punch holes;
and
generate a modified digital document without the one or more scan marks by removing a staple region corresponding to the staple mask and a punch hole region corresponding to the punch hole mask from the digital document.

2 more elements

A system comprising:

one or more memory devices;
and
one or more processors coupled to the one or more memory devices that cause the system to perform operations comprising:
generating, from a digital document comprising one or more scan marks, a margin boundary, an OCR mask comprising a binary image having regions for detected text, and digital contours defining regions within the digital document;
generating, utilizing a staple scan mark model, a staple mask from the margin boundary, the OCR mask, and the digital contours by applying a threshold region area for staples and a threshold region width and height for staples;
generating, utilizing a punch hole scan mark model, a punch hole mask from the margin boundary, the OCR mask, and the digital contours by applying a threshold region area for punch holes and a threshold region width and height for punch holes;
and
generating a modified digital document without the one or more scan marks by removing a staple region corresponding to the staple mask and a punch hole region corresponding to the punch hole mask from the digital document.

5 more elements

A computer-implemented method comprising:

generating, from a digital document comprising one or more scan marks, a margin boundary, an OCR mask comprising a binary image having regions for detected text, and digital contours defining regions within the digital document;
generating, utilizing a staple scan mark model, a staple mask from the margin boundary, the OCR mask, and the digital contours by applying a threshold region area for staples and a threshold region width and height for staples;
generating, utilizing a punch hole scan mark model, a punch hole mask from the margin boundary, the OCR mask, and the digital contours by applying a threshold region area for punch holes and a threshold region width and height for punch holes;
and
generating a modified digital document without the one or more scan marks by removing a staple region corresponding to the staple mask and a punch hole region corresponding to the punch hole mask from the digital document.

2 more elements

Dependencies are inferred from the claim text.

Autonomously removing scan marks from digital documents utilizing content-aware filters

Life of this patent

Autonomously removing scan marks from digital documents utilizing content-aware filters

Life of this patent

Abstract

Claims20