Abstract: Aspects of the present invention are related to systems and methods for automatically determining the content boundaries in a digital image.

Abstract: Aspects of the present invention comprise systems and methods for image illuminant estimation. Some aspects relate to computing an image histogram comprising data relating the frequency of image element color values to color values found under said candidate illuminants, determining match scores for the plurality of candidate illuminants, determining a minimum match score of the match scores and determining minimum match score chromaticity coordinates. Some aspects relate to fitting a surface to the match scores wherein the surface represents illuminant parameter values other than the candidate illuminants, solving for an extremum of the surface and determining chromaticity coordinates of the extremum. Some aspects relate to selecting estimated image illuminant coordinates based on the relative location of the coordinates of one of the candidate illuminants, the coordinates of the extremum and/or the minimum match score chromaticity coordinates.

Abstract: Embodiments of the present invention comprise methods and systems for descreening a digital image.

Abstract: The present application discloses a system for determining document boundaries inc1uding an image sensor, a backing opposed to the sensor, and an image processor. The image processor analyzes candidate edges imaged from a document between the sensor and the backing. The image processor determines which candidate edges are document boundaries.

Abstract: A device for generating high powered Radio Frequency (RF) or microwave signals comprising a fast rise-time video pulse generator, a modulator to modify the generated UWB pulses by gyromagnetic action to transfer a portion of the UWB pulse energy from lower frequencies to frequencies in the RF or microwave range thereby producing a resultant RF or microwave waveform that can be radiated.

Abstract: Aspects of the present invention relate to systems and methods for refining text color in a digital image.

Abstract: Embodiments of the present invention comprise systems and methods for estimation of an image illuminant.

Abstract: Methods and systems for segmentation of digital mixed-content documents. Segmentation processes may include identification of text and background regions and identification of contone regions outside the text and background regions. Further analysis may be performed to identify additional text and background regions within the contone regions thereby identifying verified contone regions, which may then be divided into contone sub-regions.

Abstract: Embodiments of the present invention comprise systems and methods for modification of image color-balance corrections.

Abstract: Elements of the present invention relate to methods and systems for estimating an image illuminant model. In some embodiments, color gamut models for a plurality of candidate illuminants are calculated and compared to an image color gamut by determining a distance match metric for each of the candidate illuminants with reference to the image color gamut. An image illuminant may then be selected from the plurality of candidate illuminants based on the distance match metric.

Abstract: Embodiments of the present invention comprise systems and methods for estimation of an image illuminant.

Abstract: A digital copier or multifunction peripheral (MFP) can perform special document construction functions including “auto-sizing,” scaling a copy to fit a selected size of copy medium, and “auto-cloning” printing a plurality of copies of a single original on a copy medium. The size of the original image is determined from the results of a full resolution scan of the original.

Abstract: A system for processing of a print ready data stream for an output device.

Abstract: A system and method are provided for aligning a scanned document in a digital scanner. The method comprises: scanning a document to create a matrix of pixel information; averaging pixel intensity information into a first plurality of row-mean buffer elements, where each row strip includes information from a second plurality of column elements; and, averaging pixel information into a third plurality of column-mean buffer elements, where each column strip includes information from a fourth plurality of row elements; comparing adjacent elements of matrix row information to generate a first set of edge positions; comparing adjacent elements of matrix column information to generate a second set of edge positions; generating a rotation angle in response to analyzing the first and second edge positions; and, rotating the scanned document by the rotation angle.

Abstract: Embodiments of the present invention comprise systems and methods for estimating self-luminous image elements and modifying images and image corrections for the presence of self-luminous elements.

Abstract: Embodiments of the present invention relate to methods and systems for detection and delineation of text characters in images which may contain combinations of text and graphical content. Embodiments of the present invention employ intensity contrast edge detection methods and intensity gradient direction determination methods in conjunction with analyses of intensity curve geometry to determine the presence of text and verify text edge identification. These methods may be used to identify text in mixed-content images, to determine text character edges and to achieve other image processing purposes.

Abstract: An imaging system includes an imaging sensing device sensing an object having a first background color and a backing in opposing relationship with the object having a second background color which is substantially the same as the first background color. The imaging system determines at least one general bounding region of the object based upon a shadow cast onto backing by the object.

Abstract: A system and method are provided for aligning a scanned document in a digital scanner. The method comprises: scanning a document to create a matrix of pixel information; averaging pixel intensity information into a first plurality of row-mean buffer elements, where each row strip includes information from a second plurality of column elements; and, averaging pixel information into a third plurality of column-mean buffer elements, where each column strip includes information from a fourth plurality of row elements; comparing adjacent elements of matrix row information to generate a first set of edge positions; comparing adjacent elements of matrix column information to generate a second set of edge positions; generating a rotation angle in response to analyzing the first and second edge positions; and, rotating the scanned document by the rotation angle.

Abstract: A digital copier or multifunction peripheral (MFP) can perform special document construction functions including “auto-sizing,” scaling a copy to fit a selected size of copy medium, and “auto-cloning” printing a plurality of copies of a single original on a copy medium. The size of the original image is determined from the results of a full resolution scan of the original.

Abstract: The present application relates to document boundary determination.