Abstract: Xerox Reference No. D/A0639A system and method for improving xerographic halftoning by magnifying a threshold array, interpolating the in-between values, enabling multiple thresholds to be accessed simultaneously and presented to multiple comparators, to cause multi-bit output. A threshold array is sampled at distinct locations separated by the sparse sampling distance to allow warping of the threshold array dots by adjusting the sampling distance in small, fractional portions (deltas) of the magnified distance. By adding more thresholds, amplitude or intensity modulation is used to move dot edges in a process direction for further flexibility in printing irrational or warpable screens.

Abstract: Provided is a method for obtaining a position of an object. A slide which carries at least one object and has reticle marks arranged at positions which form substantially a right angle, is positioned in a slide holder of a first imaging system. A first coordinate space of the imaging system is defined, and coordinates of the reticle marks in the first coordinate space are designated. A second coordinate space of a second imaging system is defined, and the coordinates of the reticle marks in the second coordinate space is designated. Using the designated coordinates of the reticle marks of the first coordinate space, the coordinate conversion parameters are computed. Thereafter, coordinates of at least one object in the first coordinate space are designated, and the first coordinate space coordinates of the object are converted into unique coordinates in a second coordinate space, using the coordinate conversion parameters.

Abstract: An apparatus images a surface. An imager stage linearly translates the surface in a first direction. A light path has a first end defining an input aperture perpendicular to the first direction and parallel to the surface, and a second end defining an output aperture. A plurality of radiation beams linearly scan and interact in time-multiplexed alternating turns with the surface below the input aperture to produce a time-multiplexed light signal that is collected by the input aperture and transmitted by the light path to the output aperture. A photodetector arrangement detects the light signal at the output aperture. A processor processes the detected time-multiplexed light.

Abstract: An apparatus images a surface. An imager stage has a planar surface for supporting a sample. A fiber optic bundle has a first end of parallel first fiber ends that are arranged to define an input aperture for viewing the sample on the imager stage. A distal bundle end is arranged to define an output aperture disposed away from the imager stage. A scanning radiation source scans a radiation beam along a path that is perpendicular to the sample on the imager stage. The input aperture of the fiber optic bundle receives a light signal that is produced by the radiation source scan of the imager stage sample. The light signal is transmitted to the bundle output aperture. A photodetector detects the light signal at the distal bundle end, and a processor processes the detected light.

Abstract: In accordance with one aspect of the present application, an imager and method for detecting and locating rare cells in a sample is disclosed. An imager stage supports the sample. A fiber optic bundle has a proximate bundle end of first fiber ends arranged to define an input aperture viewing the sample on the translation stage. The fiber optic bundle further has a distal bundle end of second fiber ends arranged to define an output aperture shaped differently from the input aperture and disposed away from the imager stage. A scanning radiation source is arranged in fixed relative position to the input aperture. The scanning radiation source scans a radiation beam on the sample within a viewing area of the input aperture. The radiation beam interacts with the sample to produce a light signal that is reflected, scattered, transmitted, re-emitted, or otherwise collected and received by the input aperture and transmitted via the fiber optic bundle to the output aperture.

Abstract: A compression and decompression system and process for optimally compressing and decompressing multibit per pixel image regions based on the type of data contained in the image region, e.g., whether the image region contains continuous tone data, including data to be halftoned, or non-continuous tone data, including antialiased text and lineart data. Segmented bytemap data blocks are processed to provide both low spatial resolution continuous tone data and high spatial resolution non-continuous tone data. However, the high spatial resolution non-continuous tone data is generated by quantizing and packing the high resolution bytes across an edge and discarding the high resolution bytes along the edge, i.e., the multibit data is discarded only in directions parallel to the edges of marks to be rendered in the image data. Additional information indicating the directions of the edges in the image data are stored to aid in decompression.

Abstract: An apparatus images a surface. An imager stage linearly translates the surface in a first direction. A fiber optic bundle has a first end of parallel first fiber ends defining a linear input aperture perpendicular to the first direction and parallel to the surface, and a second end defining a generally circular output aperture. Each first fiber end optically communicates with the output aperture. A radiation beam linearly scans and interacts with the surface below the input aperture to produce a light signal that is collected by the input aperture and transmitted by the fiber bundle to the output aperture. A photodetector detects the light signal at the output aperture. A processor processes the detected light.

Abstract: A print management system includes a policy that determines a protection level for a document to be printed. The document is printed using forgery detection and deterrence technologies, such as fragile and robust watermarks, glyphs, and digital signatures, that are appropriate to the level of protection determined by the policy. A plurality of printers are managed by a print management system. Each printer can provide a range of protection technologies. The policy determines the protection technologies for the document to be printed. The print management system routes the print job to a printer that can apply the appropriate protections and sets the appropriate parameters in the printer. Copy evidence that can establish that a document is a forgery and/or tracing information that identifies the custodian of the document and restrictions on copying of the document and use of the information in the document are included in the watermark that is printed on the document.

Abstract: A compression and decompression system and process for optimally compressing and decompressing multibit per pixel image regions based on the type of data contained in the image region, e.g., whether the image region contains continuous tone data, including data to be halftoned, or non-continuous tone data, including antialiased text and lineart data. Segmented bytemap data blocks are processed to provide both low spatial resolution continuous tone data and high spatial resolution non-continuous tone data. However, the high spatial resolution non-continuous tone data is generated by quantizing and packing the high resolution bytes across an edge and discarding the high resolution bytes along the edge, i.e., the multibit data is discarded only in directions parallel to the edges of marks to be rendered in the image data. Additional information indicating the directions of the edges in the image data are stored to aid in decompression.

Abstract: The result of integrating a halftone dot-shape can be clustered. When the edge of the halftone dot-shape extends across a “vertical” edge of a window, the window is altered until the edge of the halftone dot-shape no longer crosses either vertical edge of the altered window. The image density of the portion of the halftone dot-shape contained within the altered window is determined. The block of image density of the portion of the halftone dot shape contained within the altered window is aligned with the right edge, the left edge, split between the left and right edges, or clustered in the “center” of the altered window. An amount of the determined block that extends into the original sample window is determined. This amount extending into the original window determines the amount of image density to be generated in the final output image based on that sample location of the window.

Abstract: A compression and decompression system and process for optimally compressing and decompressing multibit per pixel image regions based on the type of data contained in the image region, e.g., whether the image region contains continuous tone data, including data to be halftoned, or non-continuous tone data, including antialiased text and lineart data. Segmented bytemap data blocks are processed to provide both low spatial resolution continuous tone data and high spatial resolution non-continuous tone data. However, the high spatial resolution non-continuous tone data is generated by quantizing and packing the high resolution bytes across an edge and discarding the high resolution bytes along the edge, i.e., the multibit data is discarded only in directions parallel to the edges of marks to be rendered in the image data. Additional information indicating the directions of the edges in the image data are stored to aid in decompression.

Abstract: Xerox Reference No. D/A0639A system and method for improving xerographic halftoning by magnifying a threshold array, interpolating the in-between values, enabling multiple thresholds to be accessed simultaneously and presented to multiple comparators, to cause multi-bit output. A threshold array is sampled at distinct locations separated by the sparse sampling distance to allow warping of the threshold array dots by adjusting the sampling distance in small, fractional portions (deltas) of the magnified distance. By adding more thresholds, amplitude or intensity modulation is used to move dot edges in a process direction for further flexibility in printing irrational or warpable screens.

Abstract: Provided is a method for obtaining a position of an object. A slide which carries at least one object and has reticle marks arranged at positions which form substantially a right angle, is positioned in a slide holder of a first imaging system. A first coordinate space of the imaging system is defined, and coordinates of the reticle marks in the first coordinate space are designated. A second coordinate space of a second imaging system is defined, and the coordinates of the reticle marks in the second coordinate space is designated. Using the designated coordinates of the reticle marks of the first coordinate space, the coordinate conversion parameters are computed. Thereafter, coordinates of at least one object in the first coordinate space are designated, and the first coordinate space coordinates of the object are converted into unique coordinates in a second coordinate space, using the coordinate conversion parameters.

Abstract: An apparatus images a surface. An imager stage linearly translates the surface in a first direction. A fiber optic bundle has a first end of parallel first fiber ends defining a linear input aperture perpendicular to the first direction and parallel to the surface, and a second end defining a generally circular output aperture. Each first fiber end optically communicates with the output aperture. A radiation beam linearly scans and interacts with the surface below the input aperture to produce a light signal that is collected by the input aperture and transmitted by the fiber bundle to the output aperture. A photodetector detects the light signal at the output aperture. A processor processes the detected light.

Abstract: In accordance with one aspect of the present application, an imager and method for detecting and locating rare cells in a sample is disclosed. An imager stage supports the sample. A fiber optic bundle has a proximate bundle end of first fiber ends arranged to define an input aperture viewing the sample on the translation stage. The fiber optic bundle further has a distal bundle end of second fiber ends arranged to define an output aperture shaped differently from the input aperture and disposed away from the imager stage. A scanning radiation source is arranged in fixed relative position to the input aperture. The scanning radiation source scans a radiation beam on the sample within a viewing area of the input aperture. The radiation beam interacts with the sample to produce a light signal that is reflected, scattered, transmitted, re-emitted, or otherwise collected and received by the input aperture and transmitted via the fiber optic bundle to the output aperture.

Abstract: A light source modulator and method of modulating a light source use a lower bandwidth input signal during rendering of image data, which is less susceptible to systematic error. The modulation scheme improves the efficiency of use of high speed memory by limiting a number of intensity level transitions to a single transition per output pixel. In conjunction with the limitation of transitions per rendering of each output pixel, data is provided to the modulator that indicates an intensity level to be provided by the modulator and a timing of a transition to that intensity level. In accordance with the exemplary embodiments of the invention, an intensity level may be a minimum intensity level, a maximum intensity level and at least one intermediate intensity level which is intermediate between the minimum and maximum intensity levels.

Abstract: A compression and decompression system and process for optimally compressing and decompressing multibit per pixel image regions based on the type of data contained in the image region, e.g., whether the image region contains continuous tone data, including data to be halftoned, or non-continuous tone data, including antialiased text and lineart data. Segmented bytemap data blocks are processed to provide both low spatial resolution continuous tone data and high spatial resolution non-continuous tone data. However, the high spatial resolution non-continuous tone data is generated by quantizing and packing the high resolution bytes across an edge and discarding the high resolution bytes along the edge, i.e., the multibit data is discarded only in directions parallel to the edges of marks to be rendered in the image data. Additional information indicating the directions of the edges in the image data are stored to aid in decompression.

Abstract: A compact rendering processor for processing image data including a multi-bit halftone region generates high addressability pixels. The compact rendering processor includes a tagging sub-processor operating on the image data to identify a target pixel and a neighboring pixel to determine a fill-order. The compact rendering processor also includes a rendering sub-processor that converts the target pixel into a high addressability pixel based upon the fill-order. Optionally, a diffusion sub-processor can be included to diffuse an error resulting from the conversion of the target pixel into a high addressability pixel to other pixels within the image data.

Abstract: A hyperacuity printing system for rendering bitmapped image data on a photosensitive recording medium, the bitmapped image data being rendered as an array of pixels across the photosensitive recording medium in a fastscan direction, and an orthogonal slowscan direction. This system includes a data source for supplying grayscale input image data and a scanning device for rendering grayscale output image data onto the recording medium. The scanning device has a device for writing scan spots on the recording medium. Further included in this system is transformation circuitry for transforming the grayscale input image data into grayscale output image data. The transformation circuitry includes a halftoner, a thresholder, and a selection device, where the selection device selects either the thresholder or the halftoner to provide the grayscale output image data.

Abstract: The result of integrating a halftone dot-shape can be clustered. When the edge of the halftone dot-shape extends across a “vertical” edge of a window, the window is altered until the edge of the halftone dot-shape no longer crosses either vertical edge of the altered window. The image density of the portion of the halftone dot-shape contained within the altered window is determined. The block of image density of the portion of the halftone dot shape contained within the altered window is aligned with the right edge, the left edge, split between the left and right edges, or clustered in the “center” of the altered window. An amount of the determined block that extends into the original sample window is determined. This amount extending into the original window determines the amount of image density to be generated in the final output image based on that sample location of the window.