摘要:
Images are prepared for blending with a reflection. Angles of incidence and angles or reflection lead to reflections of a viewer appearing to be different than actual size. Accordingly, image preparation can include scaling images of objects to be blended with a reflection to an appropriate size. For a flat specular surface the size is one half the size the object would be if the object were sized to be associated with the feature that is reflected. A viewer will focus on the reflection of the viewer at an object plane. An image associated with the specular surface will be blurred. Accordingly, the preparation can include compensating for the blurring. Preparation can also include reducing an area coverage of the image of the object to no more than about fifty percent of the region of the refection to provide space for the reflection.
摘要:
Systems and methods are described that facilitate compensating for slow scan direction displacement (e.g., skew and/or bow) defects in a raster line using slow-scan electronic registration. Input image data is buffered at low-resolution (e.g., 600 spi or the like). Displacement compensation is performed as the low-resolution contone image data is converted to high-resolution (e.g., 2400 spi or the like), and a displaced (e.g., staggered) halftoning threshold array is indexed to account for detected displacement. Displacement compensation is again performed during conversion of the high-resolution contone image data to high-resolution binary image data that is used to generate an output image.
摘要:
This closure provides image processing methods and apparatus for corner enhancing a digital image for rendering on an image output device. According to an exemplary method, the method determines whether or not image pixels are associated with a corner as a function of the USAN values generated for the image pixels. Subsequently, one or more pixels associated with a corner are modified to render a corner enhanced image.
摘要:
Disclosed are methods and apparatus for reproducing an image using one or more halftone screens for one or more respective colorants in the methods and apparatus reducing the beating of one or more excitation frequencies with one or more harmonic frequencies associated with the halftone screens. According to an exemplary method, one or more halftone screens are selected such that the fundamental frequency of an excitation frequency coincides with a harmonic frequency of a halftone screen.
摘要:
A xerographic marking device includes an intermediate transfer unit, a media transport path and at least one two-color image-on-image (IOI) drum module. Each two-color IOI drum module includes in a process order around a photoreceptor: a) a first charging unit; b) a first exposure unit; c) a first development unit; d) a second charging unit; e) a second exposure unit; and f) a second development unit, wherein the intermediate transfer unit receives a first toned image and a second toned image from the photoreceptor in a single transfer and transfers those toner images to print media to produce a toned image on print media. In various embodiments, specific color pairings are provided.
摘要:
An optical scanning device projects an image onto a photoreceptor within a print system. A laser light source generates a plurality of light beam outputs, wherein the light beam outputs are arranged in a two-dimensional parallelogram array within a substantially horizontal axis and a substantially vertical axis that is perpendicular to the horizontal axis. The two-dimensional parallelogram array has an odd number of rows of light beam outputs, wherein each row has an equal even number of light beam outputs. A rotating polygon mirror includes a plurality of deflecting surfaces, each of the deflecting surfaces deflects the light beams emitted from the laser light source. The light beam output array projects a first swath N onto the photoreceptor via the rotating mirror and swaths [N+1, N+2, . . . ] are subsequently placed at a level one-half down the number of light beam outputs of the previous swath. Each swath has the identical number of light emitting outputs as the two-dimensional array.
摘要:
As provided herein, there are supplied teachings to systems and methods for resizing a digital uniform rosette halftone image composed of multiple colorant separations, by using uniform rosette halftone tile parameters. One approach entails receiving into a digital imaging system, a digital uniform rosette halftone image and a desired resizing factor for that digital uniform rosette halftone image. Subsequently the system will define uniform rosette cells within the color uniform rosette digital halftone image. From the defined uniform rosette cells, a number of uniform rosette halftone tile seams are determined for manipulation. The orientation of the number of uniform rosette halftone tile seams is dictated by the received desired resizing factor. An energy map of the digital uniform rosette halftone image is determined according to an energy metric derived from the multiple colorant separations. The energy of the number of uniform rosette halftone tile seams within the energy map is determined so as to provide indication of at least one low energy determined uniform rosette halftone tile seam. A resizing of the uniform rosette halftone image by manipulating the at least one low energy determined uniform rosette halftone tile seam is performed so as to obtain a resized uniform rosette halftone image. The resized uniform rosette halftone image may then be printed on a printer.
摘要:
As provided herein, there are supplied teachings to systems and methods for resizing a halftone image using halftone tile parameters. One approach entails receiving into a digital imaging system, a digital halftone image and a desired resizing factor for the digital halftone image. Subsequently the system will define cells within the digital halftone image and determine from those cells, a number of halftone tile seams to suitable for manipulation. The orientation of these halftone tile seams is dictated by the received desired resizing factor. The energy of the number of halftone tile seams is determined according to an energy metric so as to provide indication of at least one low energy determined halftone tile seam. A resizing of the halftone image is then performing by manipulating at least one low energy halftone tile seam in the halftone image. The resized halftone image may then be printed on a printer.
摘要:
A printing system includes a multiple-beam generator array configured to generate multiple beams. A collimator lens is positioned to receive the multiple beams, and an aperture stop is located where the multiple beams are spatially coincident with each other. A scanning optical system is positioned to receive the beams from the aperture stop, and a recording medium receives the beams from the scanning optical system. A filter is located where the multiple beams are spatially coincident with each other, whereby each of the multiple beams may be filtered by the supplied filter.
摘要:
The teachings provided herein disclose a method for corner sharpening in the display of a bitmapped digital image. The method includes the steps of selecting a target pixel location within the digital image; observing a set of pixels within a pixel observation window superimposed on the digital image relative to the target pixel location; generating edge-state codes for a plurality of pairs of neighboring vectors of pixels within the pixel observation window; generating corner-identification codes from the plurality of edge-state codes using at least one look-up table so as to thereby identify corner pixels; and, assigning a pixel value in an output image plane in a location corresponding to the target pixel in the input image, such that assigned value extends a corner where indicated by a corner identification code, thereby producing a sharpening effect. The method may be used for improving the print quality of line-art corners and other fine details as found in both font and image data.