公开(公告)号：US20070091138A1

公开(公告)日：2007-04-26

申请号：US11256850

申请日：2005-10-25

申请人： Roger Hersch ,  Peter Amrhyn ,  Matthias Riepenhoff

发明人： Roger Hersch ,  Peter Amrhyn ,  Matthias Riepenhoff

IPC分类号： B41J29/393

CPC分类号： B41F33/0045 ,  B41F33/0036

摘要： The present invention proposes a method and a computing system for deducing ink thickness variations from spectral reflectance measurements performed on a printing press or on a printer. The computed ink thickness variations enable controlling the ink deposition and therefore the color accuracy, both in the case of high-speed printing presses and of network printers. Ink thickness variations are expressed as ink thickness variation factors incorporated into a spectral prediction model. The method for computing ink thickness variations comprises both calibration and ink thickness variation computation steps. The calibration steps comprise the calculation of ink transmittances from measured reflectances and the computation of possibly wavelength-dependent ink thicknesses of solid superposed inks. Wavelength-dependent ink thicknesses account for the scattering behavior of non-transparent inks or of inks partly entering into the paper bulk. The ink thickness variation factors are fitted by minimizing a distance metric between the reflection spectrum predicted according to the thickness variation enhanced spectral prediction model and the measured reflection spectrum. The ink thickness variation enhanced spectral prediction model can be applied both in the visible wavelength range and in the near-infrared wavelength range. This enables computing unambiguously the thickness variations of the cyan, magenta, yellow and black inks. Furthermore, a spectral reflection may be measured over a stripe of a printed page and used to predict the ink thickness variations occurring within that stripe. This enables the real-time control of the ink deposition process on a printing press.

摘要翻译： 本发明提出了一种用于通过在印刷机或打印机上进行的光谱反射率测量来推算墨水厚度变化的方法和计算系统。 计算出的油墨厚度变化使得能够在高速印刷机和网络打印机的情况下控制油墨沉积并因此控制颜色精度。 油墨厚度变化表示为并入光谱预测模型中的油墨厚度变化因子。 用于计算墨水厚度变化的方法包括校准和墨水厚度变化计算步骤。 校准步骤包括从测量的反射率计算油墨透过率和计算固体重叠油墨的可能的依赖于波长的油墨厚度。 波长相关的墨水厚度占非透明墨水或部分进入纸张体积的墨水的散射行为。 通过最小化根据厚度变化增强光谱预测模型预测的反射光谱与测量的反射光谱之间的距离度量来适合墨水厚度变化因子。 油墨厚度变化增强光谱预测模型可以应用于可见光波长范围和近红外波长范围。 这使得能够明确地计算出青色，品红色，黄色和黑色墨水的厚度变化。 此外，可以在印刷页的条纹上测量光谱反射，并且用于预测在该条纹内发生的墨水厚度变化。 这使得能够实时地控制印刷机上的油墨沉积过程。

公开(公告)号：US20070041611A1

公开(公告)日：2007-02-22

申请号：US11589240

申请日：2006-10-30

申请人： Roger Hersch ,  Sylvain Chosson ,  Ran Seri ,  Pascal Fehr

发明人： Roger Hersch ,  Sylvain Chosson ,  Ran Seri ,  Pascal Fehr

IPC分类号： G06K9/00 ,  H04N1/40

CPC分类号： G07D7/20 ,  G04B19/10 ,  G07D7/0032 ,  G09F19/00

摘要： The present invention aims at synthesizing superposition images formed either by band moire shapes or by shape level lines for making the information forwarded by valuable articles or by time pieces such as watches and clocks more dynamic, as well as for improving their attractiveness and aesthetics. A further application is publicity. For synthesizing band moiré images, the present invention relies on a band moiré image layout model allowing to obtain the layout of the base the band grating, given the layouts of the band moire image and of the revealing line grating. Base and revealing layer layouts may be conceived to create band moiré image shapes whose patterns move e.g. radially, circularly, or according to a spiral trajectory. Shape level lines occur in a superposition image when e.g. a base layer comprising modified sets of lines is superposed with a revealing layer comprising a line grating. Such a base layer embeds a shape elevation profile generated from an initial motif shape image (e.g. typographic characters, words of text, symbols, logo, ornament). By moving the revealing layer in superposition with the base layer, shape level lines move dynamically between the initial motif shape boundaries and shape foreground centers, respectively shape background centers, thereby growing and shrinking. The movement of the shape level lines creates visually attractive pulsing motif shapes, e.g. a pulsing heart or pulsing text. Categories of embodiments comprise (1) visually attractive articles having moving parts (watches, clocks, vehicles, publicity display devices, fashion clothes), (2) articles such as cosmetics, drugs, perfumes and wines, where one part is moved in respect to a second part, e.g. bottles having a lid or labels composed of two layers, (3) articles where the base layer and the revealing line grating are separated by a gap and form a fixed composed layer, and (4) articles where at least one of the layers is an electronic display.

公开(公告)号：US20050052705A1

公开(公告)日：2005-03-10

申请号：US10483104

申请日：2002-07-05

申请人： Roger Hersch ,  Bernard Wittwer ,  Edouard Forler ,  Patrick Emmel ,  Daniel Biemann ,  Daniel Gorostidi ,  Dominique Bongard

发明人： Roger Hersch ,  Bernard Wittwer ,  Edouard Forler ,  Patrick Emmel ,  Daniel Biemann ,  Daniel Gorostidi ,  Dominique Bongard

IPC分类号： B41M3/14 ,  B42D15/00 ,  B42D15/10 ,  H04N1/23 ,  H04N1/405 ,  G06K15/00 ,  G06T5/30 ,  H04N1/44 ,  H04N1/52

CPC分类号： B42D25/309 ,  B41M3/14 ,  B41M3/148 ,  B42D25/00 ,  B42D25/29 ,  B42D2035/26 ,  H04N1/23 ,  H04N1/4051

摘要： A method of generating an image incorporating a microstructure includes the steps of obtaining an original image, generating a microstructure, and rendering a region or the whole said original image with said microstructure. The operation of generating the microstructure includes an automatic synthesis of microstructure elements from original microstructure shapes.

摘要翻译： 一种产生包含微结构的图像的方法包括以下步骤：获得原始图像，产生微结构，以及用所述微结构渲染一个或多个原始图像的整个区域。 生成微结构的操作包括从原始微结构形状自动合成微结构元件。

公开(公告)号：US20080055355A1

公开(公告)日：2008-03-06

申请号：US11976344

申请日：2007-10-24

申请人： Roger Hersch ,  Edoardo Charbon ,  Thomas Bugnon ,  Patrick Emmel

发明人： Roger Hersch ,  Edoardo Charbon ,  Thomas Bugnon ,  Patrick Emmel

IPC分类号： B41J29/393

CPC分类号： H04N1/6097 ,  G06K2215/0094 ,  H04N1/6025 ,  H04N1/603 ,  H04N1/6033

摘要： A method and computing system are proposed for deducing ink thickness variations from solid-state multi-sensor measurements performed online on a printing press or printer. The computed ink thickness variations enable controlling the ink deposition and therefore the color accuracy. Ink thickness variations are expressed as ink thickness variation factors incorporated into an ink thickness variation and sensor response enhanced spectral prediction model. The ink thickness variation computing system comprises multi-channel sensor devices (e.g. red, green, blue, near infra-red), a processing module, and a computing system. The multi-channel sensor devices are replicated over the width of the print sheet. Preferably embodied by Single Photon Avalanche Diodes (SPADs), due to their high-speed acquisition capabilities, they provide responses according to the reflectance of small area segments within a print sheet. The processing module accumulates the digital sensor responses and forwards them to the computing system, which deduces the ink thickness variations.

摘要翻译： 提出了一种方法和计算系统，用于推算在印刷机或打印机上在线进行的固态多传感器测量的墨水厚度变化。 计算出的油墨厚度变化使得能够控制油墨沉积并因此控制着色精度。 油墨厚度变化表示为并入油墨厚度变化和传感器响应增强光谱预测模型中的油墨厚度变化因子。 油墨厚度变化计算系统包括多通道传感器装置（例如红，绿，蓝，近红外线），处理模块和计算系统。 多通道传感器装置在打印纸的宽度上复制。 优选地由单光子雪崩二极管（SPAD）实现，由于它们的高速捕获能力，它们根据打印片材内的小区域段的反射率提供响应。 处理模块累积数字传感器响应并将其转发到计算系统，从而推断出墨水厚度变化。

公开(公告)号：US20060129489A1

公开(公告)日：2006-06-15

申请号：US11349992

申请日：2006-02-09

申请人： Roger Hersch ,  Sylvain Chosson

发明人： Roger Hersch ,  Sylvain Chosson

IPC分类号： G06Q99/00

CPC分类号： B42D25/342 ,  G07D7/207

摘要： The present invention relies on a band moiré image layout model capable of predicting the band moiré image layer layout produced when superposing a base band grating layer of a given layout and revealing line grating layer of a given layout. Both the base band grating layer and the revealing line grating layer may have a rectilinear or a curvilinear layout. The resulting band moiré image layout may also be rectilinear or curvilinear. Thanks to the band moiré image layout model, one can choose the layout of two layers selected from the set of base band grating layer, revealing line grating layer and band moiré image layer and obtain the layout of the third layer by computation, i.e. automatically. In the case of a concentric band moiré image, base band grating layer and revealing line grating layer layouts may be produced according to geometric transformations, which yield, upon relative displacement of the position sampled by the revealing layer on the base layer, a band moiré image whose patterns move either radially, circularly or according to a spiral trajectory, depending on the orientation of the base band replication vector in the original non-transformed base layer space. In addition, it is possible to conceive a revealing line grating layer which when translated on top of the base band grating layer, generates a band moiré image which is subject to a periodic deformation. Furthermore, thanks also to the availability of a large number of geometric transformations and transformation variants (i.e. different values for the transformation constants), one may create documents having their own individualized document protection. The base band layer and the revealing layer may be separated by a small gap and form a fixed composed layer, where, thanks to the well-known parallax effect, by tilting the composed layer in respect to an observer, different positions of the base layer are sampled and a dynamically moving moiré image is generated. A computing system may automatically generate upon request an individualized protected security document having specific base band grating and revealing line grating layouts. The computing system may then upon request generate and issue a security document incorporating the base band grating layer, a base band grating layer or a revealing line grating layer allowing to authenticate a previously issued security document. The presented methods may be used for creating an individualized protection for various categories of documents (banknotes, identity documents, checks, diploma, travel documents, tickets) and valuable products (optical disks, CDs, DVDs, CD-ROMs, packages for medical drugs, products with affixed labels, watches).

公开(公告)号：US20050083540A1

公开(公告)日：2005-04-21

申请号：US10631743

申请日：2003-08-01

申请人： Roger Hersch ,  Patrick Emmel ,  Fabien Collaud

发明人： Roger Hersch ,  Patrick Emmel ,  Fabien Collaud

IPC分类号： H04N1/60 ,  H04N1/56

CPC分类号： H04N1/6097 ,  G06K2215/0094 ,  H04N1/6025 ,  H04N1/603 ,  H04N1/6033

摘要： The present invention facilitates the calibration of printers and the color separation of input images into a set of inks by disclosing methods and systems for populating device-calibration lookup tables. The disclosed methods and systems rely on a comprehensive spectral prediction model which is capable of predicting at a high accuracy the reflectance spectra of halftone ink patches. The comprehensive spectral prediction model is composed of a first part predicting the reflection spectra as a function of physical (mechanical) surface coverages and of a second part comprising functions mapping nominal surface coverages to effective surface coverages. These mapping functions are calibrated by halftone patch wedges printed alone and by half-tone patch wedges printed in superposition with one or several solid inks. The part of the comprehensive spectral prediction model predicting the reflection spectra relies on a weighted average between one component behaving according to the Clapper-Yule model and another component behaving as the spectral Neugebauer model, extended to include multiple internal reflections at the paper-air boundary. The disclosed methods and systems can perform the color separation as well as the calibration of printers printing with standard cyan, magenta, and yellow inks as well as with inks comprising standard and non-standard inks such as Pantone inks (custom inks). They are also used for performing precise undercolour removal in order to carry out the color separation of images into cyan, magenta, yellow and black inks. They can further be used to carry out the color separation of images into cyan, magenta, yellow, black, light cyan and light magenta inks. In addition, the disclosed methods and systems can be used for printer control, i.e. to control printer actuation parameters in different types of printers e.g. liquid ink professional printers (offset, gravure, letterpress), electrophotographic printers, ink-jet printers, thermal transfer printers and in dye-sublimation printers.

公开(公告)号：US20060003295A1

公开(公告)日：2006-01-05

申请号：US10879218

申请日：2004-06-30

申请人： Roger Hersch ,  Sylvain Chosson

发明人： Roger Hersch ,  Sylvain Chosson

IPC分类号： G09B19/18

CPC分类号： B42D25/342 ,  G07D7/207

摘要： The present invention relies on a band moiré image layout model capable of predicting the band moiré image layer layout produced when superposing a base band grating layer of a given layout and revealing line grating layer of a given layout. Both the base band grating layer and the revealing line grating layer may have a rectilinear or a curvilinear layout. The resulting band moiré image layout may also be rectilinear or curvilinear. Thanks to the band moiré image layout model, one can choose the layout of two layers selected from the set of base band grating layer, revealing line grating layer and band moiré image layer and obtain the layout of the third layer by computation, i.e. automatically. Base band grating layers and revealing line grating layers may be produced which yield, upon displacement of the revealing layer on top of the base layer or vice-versa, a band moiré image whose patterns move either along a predetermined direction or in the case of a concentric band moiré image, either inwards or outwards in respect to the center of the concentric moiré bands. In addition, it is possible to conceive a revealing line grating layer which when translated on top of the base band grating layer, generates a band moiré image which is subject to a periodic deformation. Furthermore, thanks also to the availability of a large number of geometric transformations and transformation variants (i.e. different values for the transformation constants), one may create documents having their own individualized document protection. A computing system may automatically generate upon request an individualized protected security document having specific base band grating and revealing line grating layouts. The computing system may then upon request generate and issue a security document incorporating the base band grating layer, a base band grating layer or a revealing line grating layer allowing to authenticate a previously issued security document. The presented methods may be used for creating an individualized protection for various categories of documents (banknotes, identity documents, checks, diploma, travel documents, tickets) and valuable products (optical disks, CDs, DVDs, CD-ROMs, packages for medical drugs, products with affixed labels, watches).

公开(公告)号：US20060280331A1

公开(公告)日：2006-12-14

申请号：US11149017

申请日：2005-06-10

申请人： Sylvain Chosson ,  Roger Hersch

发明人： Sylvain Chosson ,  Roger Hersch

IPC分类号： G06K9/00

CPC分类号： B42D25/342 ,  G07D7/0032 ,  G07D7/20

摘要： The disclosed method and system may be used for creating advanced protection means for various categories of documents (e.g. bank notes, identity documents, certificates, checks, diploma, travel documents, tickets) and valuable products (e.g optical disks, CDs, DVDs, CD-ROMs, prescription drugs, products with affixed labels, watches) hereinafter called “secure items”. Secure items are authenticated by shape level lines. The shape level lines become apparent when superposing a base layer comprising sets of lines and a revealing layer comprising a line grating. One of the two layers is a modified layer which embeds a shape elevation profile generated from an initial, preferably bilevel, motif shape image (e.g. typographic characters, words of text, symbols, logo, ornament). In the case of an authentic document, the outline of the revealed shape level lines are visual offset lines of the boundaries of the initial bilevel motif shape image. In addition, the intensities, respectively colors of the revealed shape level lines are the same as the intensities, respectively colors of the lines forming the base layer sets of lines. By modifying the relative superposition phase of the revealing layer on top of the base layer or vice-versa (e.g. by a translation or a rotation), one may observe shape level lines moving dynamically between the initial bilevel motif shape boundaries and shape foreground centers, respectively background centers, thereby growing and shrinking. In the case that these characteristic features are present, the secure item is accepted as authentic. Otherwise the item is rejected as suspect. Pairs of base and revealing layers may be individualized by applying to both the base and the revealing layer a geometric transformation. Thanks to the availability of a large number of geometric transformations and transformation parameters, one may create documents having their own individualized document protection. The invention also proposes a computing and delivery system operable for delivering base and revealing layers according to security document or valuable product information content. The system may automatically generate upon request an individually protected secure item and its corresponding authentication means.