Patents by Inventor Arindam Das
Arindam Das has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20180234568Abstract: What is disclosed is a system and method for detecting a folded page in a digital image of a scanned document. In one embodiment, the present method involves receiving a digital image of a document which has been converted to a digitized form using a document scanning device. The digital image is segmented horizontally and vertically to obtain a plurality of image segments. An edge profile is generated for the horizontal and vertical segments. A determination is then made, based on a comparison of the profiles, whether a page fold exists in the digital image. If a page fold is determined to exist in the digital image, the user is notified and the digital image is not sent to a print engine. Otherwise, the digital image is printed.Type: ApplicationFiled: February 15, 2017Publication date: August 16, 2018Inventors: Arindam DAS, Ravindranath MANNURU
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Patent number: 10038824Abstract: According to exemplary methods, a print job is received into a computerized device that includes a marking device. The print job specifies an imposition template defining multiple logical pages for a single sheet of print media according to an electronic document. The print job attributes also contain a first print colorant order and a different second print colorant order. Groups of logical pages are defined for each print colorant order, and buffers are created in which raster data associated with each group of logical pages are merged and untouched pixels are marked as negative pixels. The information from each buffer is printed on a single sheet of print media. Following printing of each buffer, the sheet of print media is returned to the marking device, so that information from the next buffer can be printed on the same side of the sheet of print media, using the marking device.Type: GrantFiled: April 12, 2017Date of Patent: July 31, 2018Assignee: Xerox CorporationInventors: Arindam Das, Chiranjib Basu, Michael A. Wiegand
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Patent number: 10025539Abstract: Methods and systems for rendering an image. In an example embodiment, a step or operation can be implemented to pre-render white objects in an image with a background image set to a single complementary color. Such a single complimentary color assists in obtaining the textual content only from the complex background. A connected component analysis can be performed with respect to said image to identify elements in said images that should be rendered as objects composed of text and graphics. Tags are then assigned for final rendering of the image after performing said component analysis with respect to said image. Modification of tag values with respect to said images avoids unwanted artifacts such as, for example, bleed through, background closing, ghost effects, etc.Type: GrantFiled: February 12, 2016Date of Patent: July 17, 2018Assignee: XEROX CORPORATIONInventors: Sankaralingam Madasamy, Arindam Das, Karthik Jakkala
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Patent number: 9998628Abstract: Disclosed are methods and multi-function devices for auto-correction of shadow effects in a scanned image. The method includes receiving a first image including a colored twin-page scanned document including at least one of a shadow region in a central part of the first image, at least one darker region caused at one or more borders of the first image, and distorted orientation with respect to a base of the first image; re-positioning the shadow region present in the central part to generate a re-positioned first binary image such that the shadow region becomes perpendicular to the base; detecting a shadow region in a central region of the re-positioned first binary image; removing the detected at least one shadow region from the re-positioned first binary image to generate a second image; and correcting a skewed orientation of each of a cropped left side and right side of the second image.Type: GrantFiled: April 3, 2017Date of Patent: June 12, 2018Assignee: XEROX CORPORATIONInventors: Mohan Palaniyappan, Punitha Puttuswamy, Arindam Das
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Patent number: 9972102Abstract: Methods and devices to improve the quality of graphics objects based on adaptive stroke thickening are disclosed. The method includes receiving a graphics object having at least one stroke. The graphics object is represented within an object window made of a plurality of cells. The method further includes identifying a fill region being defined by the stroke. Both the fill region and the stroke are represented by a group of cells. The identified fill region is tagged using a predefined flag indicating a tagged fill region or any its attributes. The stroke is strengthened unidirectionally away from the tagged fill region, where a stroke color associated with the stroke being strengthened is replaced by an adapted color provided the stroke color is same as a background color associated with a background, which is a part of the object window.Type: GrantFiled: January 16, 2017Date of Patent: May 15, 2018Assignee: XEROX CORPORATIONInventors: Xing Li, Arindam Das, Ranita Bej
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Patent number: 9971963Abstract: A system, device, and method for printing N-up documents with background forms, by receiving an instruction to print an N-up document, obtaining a document to be printed as the N-up document and a background form, receiving matchings of logical surfaces of the N-up document to the background form, decomposing the logical surfaces of the N-up document into raster images, generating tags, wherein each tag is associated with a pixel of a logical surface of the N-up document and identifies the logical surface, combining raster images of the logical surfaces into an N-up raster image, merging, using the tags, the background form with the N-up raster image to generate a merged N-up raster image, and printing the merged N-up raster image.Type: GrantFiled: January 31, 2017Date of Patent: May 15, 2018Assignee: XEROX CORPORATIONInventors: Arindam Das, Ranita Bej, Polisetty Venkata Rama Kota Jyothendra Varma
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Patent number: 9917977Abstract: Disclosed herein are methods and systems for generating one or more cut contours based on object types. The method includes receiving from a user a print job including a first file having objects and receiving at least one object type and a cut width for printing the job at a printer. Based on the at least one object type, corresponding objects are extracted from the first file. Then, automatically cut contours are generated while creating a raster image for the extracted objects. The cut contour is generated at the cut width distance outside a boundary of each object. The cut contour then is embedded around each object in the raster image to generate a second file. The cut contour is embedded using a specific color. The second file including the cut contour in the specific color around each object is printed.Type: GrantFiled: November 3, 2016Date of Patent: March 13, 2018Assignee: XEROX CORPORATIONInventors: Chiranjib Basu, Ranita Bej, Arindam Das
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Patent number: 9858694Abstract: Methods and devices to improve the quality of graphics objects based on adaptive stroke thickening are disclosed. The method includes receiving a graphics object having a stroke, where the stroke defines a fill region. The received graphics object is identified as a fill object based on the stroke including a first cell of a stroke color being different from a fill color of a second cell associated with the fill region. The stroke color and the fill color are compared with a background color of a third cell associated with a background according to a predefined condition, where the first cell, the second cell, and the third cell are linearly adjacent to each other. Based on the comparison, an adapted color being different from the background color of the third cell is selected to adaptively strengthen the first cell, which is associated with the stroke, away from the fill region.Type: GrantFiled: January 16, 2017Date of Patent: January 2, 2018Assignee: XEROX CORPORATIONInventors: Arindam Das, Ranita Bej, Xing Li
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Patent number: 9800879Abstract: Methods and systems for providing multi-layer reversible data hiding are disclosed. According to the methods and systems, multi-layer reversible data hiding process may be implemented in two stages. The first stage provides embedding of the sensitive data on a secret layer and hiding the secret layer behind single or multiple layers for secure transmission for intended recipient. Subsequently, the second stage is concerned about retrieving or extracting the hidden sensitive data through proper authentication. In the extraction process, the recipient needs to provide the right authentication code for each of embedded layer in order to reach to the secret layer. Upon unsuccessful authentication of any embedded layer, the proposed method enables an intelligent security technique termed as SMART (Suspect Malicious Activity on Rich Tract), which ensures to protect the sensitive data by suspecting the attempts of theft and intrusion.Type: GrantFiled: December 1, 2015Date of Patent: October 24, 2017Assignee: Xerox CorporationInventors: Arindam Das, Mahesh Ramasamy, Punitha Puttuswamy
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Publication number: 20170235528Abstract: Methods and systems for rendering an image. In an example embodiment, a step or operation can be implemented to pre-render white objects in an image with a background image set to a single complementary color. Such a single complimentary color assists in obtaining the textual content only from the complex background. A connected component analysis can be performed with respect to said image to identify elements in said images that should be rendered as objects composed of text and graphics. Tags are then assigned for final rendering of the image after performing said component analysis with respect to said image. Modification of tag values with respect to said images avoids unwanted artifacts such as, for example, bleed through, background closing, ghost effects, etc.Type: ApplicationFiled: February 12, 2016Publication date: August 17, 2017Inventors: Sankaralingam Madasamy, Arindam Das, Karthik Jakkala
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Patent number: 9699357Abstract: Disclosed are printing devices and methods that accommodate the use of multiple different output color modes and, thereby multiple different output color profiles and that support user selection of any of the profiles for printing different logical pages on a single print surface. Consequently, they do not require a user to trade off between a desire to achieve a particular result in an image on one logical page, wherein the particular result is only achievable with an extended gamut profile, and a desire to avoid the higher cost associated with unnecessarily using the extended gamut profile to print a different image on a different logical page on the same print surface. Thus, the printing devices and methods provide for rendering of both standard and enhanced quality images on the same print surface in accordance with user selections and for minimizing costs associated with printing (e.g., due to excessive colorant usage).Type: GrantFiled: May 3, 2016Date of Patent: July 4, 2017Assignee: Xerox CorporationInventors: Arindam Das, Ranita Bej, Chiranjib Basu
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Publication number: 20170155916Abstract: Methods and systems for providing multi-layer reversible data hiding are disclosed. According to the methods and systems, multi-layer reversible data hiding process may be implemented in two stages. The first stage provides embedding of the sensitive data on a secret layer and hiding the secret layer behind single or multiple layers for secure transmission for intended recipient. Subsequently, the second stage is concerned about retrieving or extracting the hidden sensitive data through proper authentication. In the extraction process, the recipient needs to provide the right authentication code for each of embedded layer in order to reach to the secret layer. Upon unsuccessful authentication of any embedded layer, the proposed method enables an intelligent security technique termed as SMART (Suspect Malicious Activity on Rich Tract), which ensures to protect the sensitive data by suspecting the attempts of theft and intrusion.Type: ApplicationFiled: December 1, 2015Publication date: June 1, 2017Inventors: Arindam Das, Mahesh Ramasamy, Punitha Puttuswamy
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Publication number: 20120261182Abstract: A polymeric composition including a blend of poly(vinylidine fluoride) (PVDF), poly(methyl methacrylate) (PMMA), carbon nanofibers, and poly(tetrafluoroethylene) (PTFE) particles is described and claimed. The polymeric composition may be coated onto a substrate and dried to form a film adhered to the substrate. The film optionally exhibits an electrical conductivity of about 10 Siemens per meter (S/m) to about 310 S/m and an electromagnetic interference shielding of about 32 decibels. Further, a coated substrate is provided including a substrate and a film adhered to the substrate, where the film includes a polymeric composition comprising a blend of PVDF, PMMA, carbon nanofibers, and PTFE particles.Type: ApplicationFiled: June 9, 2011Publication date: October 18, 2012Applicant: The Board of Trustees of the University of IllinoisInventors: Constantine M. Megaridis, Ilker S. Bayer, Manish K. Tiwari, Arindam Das
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Patent number: 7437568Abstract: Computer apparatus comprising a receiver for receiving an integrity metric for a computer entity via a trusted device associated with the computer entity, the integrity metric having values for a plurality of characteristics associated with the computer entity; a controller for assigning a trust level to the computer entity from a plurality of trust levels, wherein the assigned trust level is based upon the value of at least one of the characteristics of the received integrity metric.Type: GrantFiled: August 16, 2001Date of Patent: October 14, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Arindam Das-Purkayastha, Siani Lynne Pearson, Liqun Chen
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Publication number: 20020026576Abstract: Computer apparatus comprising a receiver for receiving an integrity metric for a computer entity via a trusted device associated with the computer entity, the integrity metric having values for a plurality of characteristics associated with the computer entity; a controller for assigning a trust level to the computer entity from a plurality of trust levels, wherein the assigned trust level is based upon the value of at least one of the characteristics of the received integrity metric.Type: ApplicationFiled: August 16, 2001Publication date: February 28, 2002Applicant: Hewlett-Packard CompanyInventors: Arindam Das-Purkayastha, Siani Lynne Pearson, Liqun Chen