公开(公告)号：US12128701B2

公开(公告)日：2024-10-29

申请号：US17242444

申请日：2021-04-28

申请人： Vahid Babaei ,  Roger D. Hersch ,  Artin Saberpour Abadian ,  Rhaleb Zayer ,  Hans-Peter Seidel

发明人： Vahid Babaei ,  Roger D. Hersch ,  Artin Saberpour Abadian ,  Rhaleb Zayer ,  Hans-Peter Seidel

IPC分类号： B42D25/342 ,  B29D11/00 ,  B44F1/06

CPC分类号： B42D25/342 ,  B29D11/00 ,  B44F1/06

摘要： Moiré is an appealing visual effect observable when two or more repetitive patterns are superposed. We introduce a method for designing and fabricating level-line moirés on curved surfaces. These moiré shapes are obtained by superposing a partly absorbing or partly light deviating curved base layer and a curved revealing layer formed by a grating of transparent lines or cylindrical lenses. The distances between base layer and revealing layer are adapted to the locally varying distances between successive transparent lines or cylindrical lenses of the curved revealing layer grating. We demonstrate the quality of our method by rendered simulations and by fabrication. The resulting level-line moiré display devices can be manufactured using different fabrication techniques, from multi-material 3D printing to molding.

公开(公告)号：US12008423B2

公开(公告)日：2024-06-11

申请号：US17956948

申请日：2022-09-30

申请人： Roger D. Hersch ,  Romain Rossier

发明人： Roger D. Hersch ,  Romain Rossier

IPC分类号： G06K19/06

CPC分类号： G06K19/06093 ,  G06K19/06037 ,  G06K19/06159

摘要： Methods are disclosed for hiding a two-dimensional code such as a QR code within a visible layer of randomly scattered line segments. The scattering parameters comprise the length of successive line segments as well as their relative offsets. These parameters are stored in a key.
The hidden 2d code is recovered with a computing device such as a smartphone carrying out the acquisition, perspective correction, and rectification of the visible layer of scattered line segments. This computing device synthesizes in its memory according to that same key a hidden layer of scattered line segments. The superposition of the acquired, perspectively corrected and rectified visible layer and of the hidden layer yields an image from which the hidden 2D code is revealed. The presented methods enable the secret transmission of information from the real world of documents and objects to databases located on computer networks.

公开(公告)号：US11968345B1

公开(公告)日：2024-04-23

申请号：US18095546

申请日：2023-01-11

申请人： Romain Rossier ,  Roger D. Hersch

发明人： Romain Rossier ,  Roger D. Hersch

IPC分类号： H04N1/40 ,  H04N1/23 ,  H04N1/405 ,  H04N1/52 ,  H04N1/60

CPC分类号： H04N1/4055 ,  H04N1/2346 ,  H04N1/52 ,  H04N1/6086

摘要： We disclose a method for printing by rotogravure, flexography, offset, inkjet or electrophotography invisible images that are viewable under UV light. The method generates juxtaposed dispersed dot halftones by first creating juxtaposed clustered dot halftones and by applying to them dispersed dot halftoning according to a blackness reduction factor. Dispersed dot halftoning is embodied by random threshold error diffusion. The resulting dispersed dot halftones comprise pixel segments located within the areas defined by the clustered dots. These pixel segments specify the areas of the cells to be engraved onto the rotogravure cylinder. For offset, they can be imaged onto an offset plate or for electrophotography, onto a photoconductor. The disclosed juxtaposed dispersed dot halftoning method can be embedded into a framework for the reproduction of fluorescent full color images with three or more invisible fluorescent inks. These invisible fluorescent color images offer a strong protection against counterfeits.

公开(公告)号：US20210362532A1

公开(公告)日：2021-11-25

申请号：US16881396

申请日：2020-05-22

申请人： Roger D. Hersch

发明人： Roger D. Hersch

IPC分类号： B42D25/342 ,  G07D7/207 ,  G07D7/00

摘要： The present disclosure describes a method and computerized means for creating dynamically evolving moiré shapes on curved surfaces. The method applies geometrical transformations in order to obtain curvilinear moirés and creates the moirés on curved surfaces by applying mappings from planar space to 3D space. The method relies on the superposition of a base layer with base bands and of a revealing layer with sampling elements. The dimensions of the revealing layer sampling elements such as cylindrical or spherical lenses as well as the distances between the base and revealing layer surfaces are adapted to the space between neighbouring isoparametric lines that define the curved surface. The resulting moiré shapes evolve smoothly on the specified curved surface and show recognizable shapes such as words, letters, numbers, flags, logos, graphic motifs, drawings, clip art, and faces.

公开(公告)号：US20200027279A1

公开(公告)日：2020-01-23

申请号：US16039350

申请日：2018-07-19

申请人： Sami Arpa ,  Sabine Süsstrunk ,  Roger D. Hersch

发明人： Sami Arpa ,  Sabine Süsstrunk ,  Roger D. Hersch

IPC分类号： G06T19/20 ,  G06T11/80 ,  G06T17/20 ,  G06T11/60

摘要： We disclose a method for synthesizing by computer an artwork where 2D and 3D contents are integrated within a same composition. Such an artwork creates plausible effects for the viewers by showing a different relationship between 2D and 3D at each viewing angle. Methods are proposed for ensuring the continuity between the 2D and the 3D parts in terms of mesh geometry and reflected colors. The user selects from a given scene a region of interest (ROI) to be reproduced in 3D. A flat rendering grid is created that matches the topology and tesselation of the ROI. The ROI is attached to the rendering grid. To enhance the continuity between the 2D and the 3D parts of a scene object, the 2D part of the object can be represented as bas-relief. Designers can create 2D-3D sculpture paintings for decoration, exhibitions, and homes.

公开(公告)号：US07305105B2

公开(公告)日：2007-12-04

申请号：US11149017

申请日：2005-06-10

申请人： Sylvain Chosson ,  Roger D. Hersch

发明人： Sylvain Chosson ,  Roger D. 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 secure items (e.g. bank notes, identity documents, certificates, checks, diploma, travel documents, tickets) and valuable products (e.g CD-ROMs, DVD's, prescription drugs, products with affixed labels, watches). 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. By modifying the relative superposition phase of the revealing layer on top of the base layer or vice-versa (e.g. by translation or rotation), shape level lines grow and shrink dynamically. In the case that these shape level lines are present, the secure item is accepted as authentic. Otherwise the item is rejected as suspect.

摘要翻译： 所公开的方法和系统可用于为安全项目（例如银行券，身份证件，证书，支票，文凭，旅行证件，票据）和有价值的产品（例如CD-ROM，DVD，处方药，产品）创建先进的保护装置 带贴标签，手表）。 安全项目通过形状级别的线路进行身份验证。 当叠加包括线组的基层和包括线光栅的显露层时，形状水平线变得明显。 两层中的一个是嵌入由初始的，优选双层的图案形状图像生成的形状仰角剖面的修改层。 通过在底层顶部改变显露层的相对重叠相位（反之亦然）（例如通过平移或旋转），形状等级线可以动态地生长和收缩。 在存在这些形状等级线的情况下，安全项目被接受为真实的。 否则该项目被拒绝为可疑。

公开(公告)号：US07295717B2

公开(公告)日：2007-11-13

申请号：US11589240

申请日：2006-10-30

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

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

IPC分类号： G06K9/36

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：USRE38410E1

公开(公告)日：2004-01-27

申请号：US09544001

申请日：2000-04-06

申请人： Roger D. Hersch ,  Bernard Krummenacher

发明人： Roger D. Hersch ,  Bernard Krummenacher

IPC分类号： G06F1516

CPC分类号： G06F17/30067 ,  H04L67/1097

摘要： The present invention concerns a parallel multiprocessor-multidisk storage server which offers low delays and high throughputs when accessing and processing one-dimensional and multi-dimensional file data such as pixmap images, text, sound or graphics. The invented parallel multiprocessor-multidisk storage server may be used as a server offering its services to computer, to client stations residing on a network or to a parallel host system to which it is connected. The parallel storage server comprises (a) a server interface processor interfacing the storage system with a host computer, with a network or with a parallel computing system; (b) an array of disk nodes, each disk node being composed by one processor electrically connected to at least one disk and (c) an interconnection network for connecting the server interface processor with the array of disk nodes. Multi-dimensional data files such as 3-d images (for example tomographic images), respectively 2-d images (for example scanned aerial photographs) are segmented into 3-d, respectively 2-d file extents, extents being striped onto different disks. One-dimensional files are segmented into 1-d file extents. File extents of a given file may have a fixed or a variable size. The storage server is based on a parallel image and multiple media file storage system. This file storage system includes a file server process which receives from the high level storage server process file creation, file opening, file closing and file deleting commands. It further includes extent serving processes running on disk node processors, which receive from the file server process commands to update directory entries and to open existing files and from the storage interface server process commands to read data from a file or to write data into a file. It also includes operation processes responsible for applying in parallel geometric transformations and image processing operations to data read from the disks and a redundancy file creation process responsible for creating redundant parity extent files for selected data files.

公开(公告)号：US5737549A

公开(公告)日：1998-04-07

申请号：US188589

申请日：1994-01-31

申请人： Roger D. Hersch ,  Bernard Krummenacher

发明人： Roger D. Hersch ,  Bernard Krummenacher

IPC分类号： G06F11/10 ,  G06F13/00

CPC分类号： G06F11/1076 ,  G06F13/00 ,  G06F2211/1028

摘要： The present invention concerns a parallel multiprocessor-multidisk storage server which offers low delays and high throughputs when accessing and processing one-dimensional and multi-dimensional file data such as pixmap images, text, sound or graphics. The invented parallel multiprocessor-multidisk storage server may be used as a server offering its services to a computer, to client stations residing on a network or to a parallel host system to which it is connected. The parallel storage server comprises (a) a server interface processor interfacing the storage system with a host computer, with a network or with a parallel computing system; (b) an array of disk nodes, each disk node being composed by one processor electrically connected to at least one disk and (c) an interconnection network for connecting the server interface processor with the array of disk nodes. Multi-dimensional data files such as 3-d images (for example tomographic images), respectively 2-d images (for example scanned aerial photographs) are segmented into 3-d, respectively 2-d file extents, extents being striped onto different disks. One-dimensional files are segmented into 1-d file extents. File extents of a given file may have a fixed or a variable size. The storage server is based on a parallel image and multiple media file storage system. This file storage system includes a file server process which receives from the high level storage server process file creation, file opening, file closing and file deleting commands. It further includes extent serving processes running on disk node processors, which receive from the file server process commands to update directory entries and to open existing files and from the storage interface server process commands to read data from a file or to write data into a file. It also includes operation processes responsible for applying in parallel geometric transformations and image processing operations to data read from the disks and a redundancy file creation process responsible for creating redundant parity extent files for selected data files.

公开(公告)号：US11186112B1

公开(公告)日：2021-11-30

申请号：US16881396

申请日：2020-05-22

申请人： Roger D. Hersch

发明人： Roger D. Hersch

IPC分类号： B42D25/342 ,  G07D7/207 ,  G07D7/00

摘要： The present disclosure describes a method and computerized means for creating dynamically evolving moiré shapes on curved surfaces. The method applies geometrical transformations in order to obtain curvilinear moirés and creates the moirés on curved surfaces by applying mappings from planar space to 3D space. The method relies on the superposition of a base layer with base bands and of a revealing layer with sampling elements. The dimensions of the revealing layer sampling elements such as cylindrical or spherical lenses as well as the distances between the base and revealing layer surfaces are adapted to the space between neighbouring isoparametric lines that define the curved surface. The resulting moiré shapes evolve smoothly on the specified curved surface and show recognizable shapes such as words, letters, numbers, flags, logos, graphic motifs, drawings, clip art, and faces.