Hp Indigo B.v.

Hewlett-packard Indigo B.v.

Hewlett-packard Development Company, L.p.

Noam Shaham

Ram Dagan

Gideon Amir

Oren Haik

Eli Velner

Zelidor Fineberg

Oded Perry

Gregory Braverman

Liron Itan

Mirta Perlman

Michael Melamed

Lluis Abello Rosello

Joan Vidal Fortia

Amir Gaash

Tal Frank

Yavin Atzmon

Vladislav Kaploun

Jorge Martinez De Salinas Vazquez

Raz Zamir

Tal Framk

Lior Krasnovsky

Gershon Alon

David Ben-Ovadia

Yoram Arnon

Lenny Ridel

A method comprising determining a recipe vector of a recipe to a printing device, wherein the recipe is representative of a spot color in an input image, the recipe vector being based on one or more recipe color properties of the recipe, and determining a pixel vector of a pixel of an output of a printing device based on one or more pixel color properties of the pixel, wherein the pixel vector is representative of a spot color in an output of a printing device. The method also comprises comparing the recipe vector and pixel vector to determine a difference between the recipe and pixel and adjusting one or more pixel color properties of the pixel when the difference is below a predetermined threshold, to reduce the difference so as to substantially reproduce the spot color of the input image in the output of the printing device. The adjusted pixel color properties are then provided to the printing device.

Color adjustment system and method

A method is described in which a length of an image is compared with a threshold associated to a print device. The image is subdivided into a sequence of print frames. Each print frame has length equal to or less than the threshold. A stitching operation is performed on at least two consecutive print Compare a length of an image with a threshold frames. The print device is controlled to sequentially print the at least two stitched consecutive print frames.

Stitching frames into which image has been subdivided along length of image

In an example, an apparatus comprising an image processor is configured to perform edge detection on the image to detect a plurality of edges, automatically identify a path across the image based on the detected plurality of edges, divide the image into two adjacent sub-images based on the determined path, and generate first and second print data to cause the printing device to print the two adjacent sub-images.

Printing sub-images to create complete image

In an example, a method includes rasterizing a seed image using a processor. A plurality of rasterized modified images may be generated from the rasterized seed image. Generating each rasterized modified image may include determining an image attribute modification and applying the determined image attribute modification to at least a portion of the rasterized seed image to generate the rasterized modified image.

Generating rasterized modified images from a rasterized seed image

In some examples, a system selects a spanning region of an image spanning an intersection between adjacent sub-images that partition the image. The spanning region is divided based on a non-linear path that is determined on the basis of a user input, resulting in respective modified adjacent sub-images. Print data to cause a printing device to print the respective modified adjacent sub-images is generated on the basis of the dividing.

Dividing a spanning region of adjacent sub-images to generate print data

A method and apparatus for generating print data are described herein. An apparatus comprising an image processor () is configured to select a region of an image spanning an intersection between at least two adjacent sub-images that partition the image. The spanning region is divided based on a non-linear path that is determined on the basis of a user input, resulting in at least two modified adjacent sub-images. Print data operable to cause a printing device () to print the respective modified adjacent sub-images are generated on the basis of the dividing.

Example implementations provide a method of processing data associated with printing a plurality of separations; the method comprising creating, from the data associated with the plurality of separations, complementary separation layer data associated with the complement of data relating to an opaque separation of the plurality of separations.

Printing devices

Examples analyze a digital image to determine an amount of high-frequencies corresponding to each pixel of the digital image based at least in part on gradients corresponding to a pixel neighborhood of each pixel. Examples analyze the digital image to determine a degree of randomness for each pixel based at least in part on the corresponding gradients. Examples generate an activity mask for the digital image based at least in part on the amount of high-frequencies and the degree of randomness corresponding to each pixel. Examples process the pixels of the digital image by performing gray component replacement to generate a color transformed image based at least in part on the activity mask.

Gray component replacement in a digital image to generate a color transformed image

A data transfer system includes a virtual printer driver to receive a report from a first system, the report in the form of a print job, and to generate an electronic document representative of the report; and an extraction module to extract a parameter from the electronic document, format the parameter in a first format, and provide the parameter in the first format to a second system.

Data transfer system, method of transferring data, and system

A color input image comprising a plurality of pixels, each pixels encoded in RGB color space, is processed to convert the RGB pixels to another color space domain for printing the color input image. The number of colors within a cell of the input image is reduced. Each cell comprises an N&#xd7;M array of pixels and the number of colors is reduced to a maximum of b source colors, wherein b is a positive integer equal to or greater than 2. Each of the resulting colors of each cell is calibrated to generate a printable color. The cells are then processed to convert the pixels of each cell into another color space, for example, to determine ink vectors, in another color space, for each calibrated color.

Image processing that includes reducing a number of colors within a cell of an image

Color image data is compressed by determining the number of colors within a cell of an input image, each cell comprising an N&#xd7;M array of pixels; in response to determining that the number of colors is greater than a first predetermined threshold, compress the cell using lossy compression; and in response to determining that the number of colors is less than the first predetermined threshold, reduce the number of colors.

Color image data compression

A method for pre-print enhancement of a raster image is disclosed. The method includes

Pre-print enhancement of a raster image

A page composition method for composing a page from elements in pixelized form for bit-mapping or half-toning prior to printing including; (a) determining the positions of the elements on a printed page; (b) dividing the page into bands; (c) serially transferring pixel data values for sections of bands corresponding to the portions of respective elements in a band, seriatim to a buffer memory, wherein the data from the portion of one element in a band is completely read prior to reading data corresponding to the portion of a second element in the band; (d) writing the data to a buffer memory as it is read; and (e) transferring the data from the buffer memory when all the data corresponding to all portions of all elements in the band is written in the buffer memory.

Growing community of inventors

Ness Ziona, Israel

Noam Shaham