53 results about "Digital reproduction" patented technology

In a method and system for processing a photographic image having lightness values, L*, representing one of the colorimetric values of an original scene, the photographic image is transformed. The transformed image has a gamma as a function of CIE 1976 L*, which includes a dark region having a rising slope, a light region having a falling slope, and a plateau region having a slope constantly within 5 percent of a maximum value in said plateau region. The rising slope is at least twice as large as the absolute value of the falling slope. The plateau region is between 10 L* and 30 L* wide. Gamma is a derivative of visually perceived reproduced CIE 1976 L* versus scene CIE 1976 L*. Gamma has a maximum slope between 1.5 and 2.0.

The invention relates to a measuring method of 3D profilometry of free-form surface based on computer-generated hologram, comprising the following steps: generating a computer-generated hologram with an ideal free-form surface wavefront according to a mathematical model of the free-form surface; carrying out holographic record on an actual to-be-measured free-form surface; sampling a hologram recorded by a medium through a charge coupled device so as to obtain a digital hologram; respectively carrying out digital reconstruction on the digital hologram and the computer-generated hologram so as to obtain a to-be-measured free-form surface and CGH wavefront information, and carrying out coherent addition on the two wavefronts so as to obtain an interference pattern; carrying out phase computation on the interference pattern so as to obtain the phase position of an ideal free-form surface and the phase position of the to-be-measured free-form surface; calculating according to the phase positions obtained by calculation so as to obtain the height information of each pixel dot; and then obtaining the 3D profilometry of the free-form surface. Due to the fact that the measuring method is a contactless optical measuring method, the surface of the free-form surface is prevented from damage, and the measuring range and the measuring object are not limited; the precision is high, thus the accurate real-time detection can be realized. The measuring method can provide accurate data for precise processing of the free-form surface.

Documents for minimizing and detecting fraudulent activity are provided. The document comprises a printable substrate, a first security feature that forms a latent copy-void warning message that visually appears on an electronically printed reproduction of the document original, and a second security feature that forms a latent validation message that visually appears on a digital reproduction of the document original. This arrangement allows a possessor of the printed document reproduction to quickly identify it as a counterfeit by virtue of the presence of the copy-void warning message on the document original, and allows an inspector of a digital document reproduction to quickly identify it as an authentic digital reproduction of the document original by virtue of the presence and exactness of the validation message. The second security feature is at least partially embedded, and can be completely embedded, within the first security feature. In this manner, a criminal who attempts to circumvent the first security feature by removing the latent copy-void warning message, will inadvertently remove the latent validation message. As a result, any document generated from such fraudulent activity will not contain the validation message, thereby indicating to an inspector of the digital image that it was not generated from the document original. Methods for authenticating a digital reproduction of an original document are provided. The document original carries nano-structures that form a latent message, such as a validation message. The method comprises creating the digital document reproduction, examining the digital document reproduction for the message, which can be done manually or automatically, and authenticating the digital document reproduction based on the examination. If the message is a validation message, its identification may be used to conveniently authenticate the digital image. Another method comprises digitally reproducing the document original to form a pixel pattern representing the message, comparing the pixel pattern with a reference pixel pattern, and authenticating the digital document reproduction based on the comparison. The pixel pattern comparison may be accomplished manually, but preferably is accomplished by a machine automatically in order to facilitate the authentication process. In one method, the reference pixel pattern is obtained by digitally reproducing a known sample of the document original. The nano-structures may be optionally modulated, so that any pixel pattern differences between the digital document reproduction and the sample image is accentuated. Documents that confine a multitude of latent messages in a single region are provided. The document comprises a printable substrate, a latent message having a visual density configured to change in the presence of an environmental condition to activate the latent message on the document original, and a normally visible message having a visual density configured to change in the presence of the environmental condition (e.g., a thermal condition involving an increase in temperature) to deactivate the normally visible message. The latent message and the normally visible message spatially overlap with each other, so that, e.g., the messages can be confined to a single region. Because only one of the messages is intended to be activated at a given time, they can co-exist. The latent message may, e.g., a validation message, and the normally visible message may be, e.g., bearer information, e.g., bank check bearer information. The normally visible message may also occupy a region defining a bearer field, e.g., a signature field.

Charging in a reasonable manner for a fee regarding an information recording apparatus recording information into a recording medium. Information received through a tuner or reproduced through a digital reproducing section is converted by a format conversion circuit, supplied to a digital, an analog or a memory card type recording and reproducing section where dubbing is carried out. Such information can be also stored in a storage medium such as a HDD and then supplied and dubbed in the pertinent recording and reproducing section. When the recording medium containing recorded information is unloaded, charging is done through a charging section. Once unloaded, the recording medium can be easily taken out and used, thus such a convenience can be charged as well. In addition, the charging can be done corresponding to a number of recording media containing recorded information. Furthermore, a user can verify whether recording has been carried out properly, before charging.

The invention discloses a culture space simulation method based on the multimedia digital technology. The method comprises the following steps: constructing a virtual simulation system by relying on the computer virtual reality (VR) technology, and conducting interactive simulation and information exchange through use of various types of interactive equipment in a virtual environment by a use; conducting digital reproduction on cultural heritage through the image and computer imaging technology by a vision-based method, and preserving and reproducing the historical memories of temples and ancestral halls as cultural space in changes by utilizing the advanced virtual reality + temples and ancestral halls multimedia digital technology. According to the culture space simulation method, the conventional virtual reality technology is adopted to simulate the most prosperous scene at the time and reproduce the former Tang river historic building cultural scene to the world; the spreading design of the original style of the Tang river basin historic buildings is based, new landscapes and functional properties are selectively endowed, the landscapes are reproduced through the simulation and reproduction design, the peculiar humanity and geographical position complex is created, and the folk culture of the Ou Yue region is continued.

The invention discloses a template matching-based merged cell table segmentation and identification method, which comprises the following steps of: correcting an inclined table by adopting a table correction algorithm based on straight line detection provided by the method; secondly, segmenting an interested table area by using a table area detection algorithm based on contour detection; secondly,carrying out template matching and other operations on the determined table area by adopting the template matching-based merged cell table segmentation algorithm provided by the invention, and meanwhile, carrying out segmentation processing on the interested cell area to obtain each cell image; and finally, performing BP neural network identification on each cell image, and performing operationssuch as table digital reproduction and the like in combination with the template file and a BP identification result. Tests prove that the method can effectively solve the problem of segmentation andidentification of the inclined table image with multiple merged cells, is simple and effective, has certain practical feasibility, is also suitable for segmentation processing of complex tables, and has certain expansibility.

An optical disk device has reproduction signal detecting section, each of which detects a reproduction signal corresponding to a reflective wave of an optical disk, a first offset controller, which offsets the reproduction signal with a first offset value F1, an A / D converting circuit, which A / D converts the offset reproduction signal, and a second offset controller, which offsets the converted digital reproduction signal with a second offset value F2, and a decoder, which viterbi decodes the offset digital reproduction signal and outputs decoded data B. Because an offset is performed with each exclusive value to A / D conversion and viterbi decoding, it is possible to obtain high identification accuracy with nonlinear characteristic eliminated.

A reproduced signal waveform processing apparatus is provided. The apparatus includes an A / D converter for sampling a reproduced signal at a reproducing clock having a predetermined oscillation frequency; a first equalizer for equalizing a digital reproduced signal from the A / D converter; a second equalizer connected in series with the first equalizer for further equalizing the digital reproduced signal from the first equalizer; a phase frequency controller for detecting a phase frequency error between the digital reproduced signal from the first equalizer and the reproducing clock signal, and outputting a control signal on the basis of a result of the detection; and a variable frequency oscillator for varying the oscillation frequency in accordance with the control signal.

The invention discloses a digital hologram-based high-precision spherical surface sub-aperture splicing fusion method. The method of the invention is based on digital holographic technology and sub-aperture splicing technology; a spherical surface sub-aperture hologram measured through adopting the digital holographic technology is subjected to digital reproduction, so that sub-aperture phase diagrams can be obtained, and the sub-aperture phase diagrams are subjected to splicing fusion, and therefore a full-field-of-view spherical surface phase diagram can be obtained; and digital reproduction calculation is performed on the obtained sub-aperture hologram data based on an off-axis holographic optical path. The method specifically includes the following steps that: image apodization, frequency-domain filtering, aberration compensation and digital focusing reproduction are performed sequentially; and the splicing fusion of the sub-aperture phase diagrams is completed through adopting a sub-aperture splicing algorithm, and sub-aperture relative position errors are further corrected through iterative calculation, so that the phase diagram of a complete spherical surface can be obtained. The digital hologram-based high-precision spherical surface sub-aperture splicing fusion method of the invention has the advantages of fully-digitized data processing process, high precision, simple operation, high reliability and the like, and can detect data processing of a spherical surface based on the digital holographic technology.

An apparatus for playback of an analog optical sound track includes a transport for transporting a film including an analog optical sound track. A scanner generates an image signal of only the analog optical sound track. An alignment device aligns the scanner such that the image signal of the analog optical sound track substantially fills a width of the scanner. A processor processes the image signal to form an audio output signal.

In a digital recording apparatus including a data control circuit 2a, a memory 4, an encryption circuit 5, an interface 6, a DVD drive 8, and a CPU 3, when encryption is required during recording, data is temporarily stored in the memory 4. After the encryption circuit 5 is enabled, the data is encrypted and recording by the DVD drive 8 on a recording medium is resumed. Thus, it is possible to make the encryption circuit operate only when recording a program requiring a content protection and to perform recording or reproducing from the required timing without interrupting the recording or reproducing even during start-up of the encryption circuit.

The invention discloses a method of improving the reproduction quality of a noise-containing digital hologram, comprising the steps of enhancing the grayscale of a noise-containing digital hologram through Gamma transform, digitally reproducing the hologram, and filtering the reproduced image. Thus, poor-quality hologram reproduction in the prior art is overcome, the visual effect of the reproduced image of a noise-containing hologram is improved significantly, and the peak signal-to-noise ratio of the reproduced image is improved.

Provided is an electrophotographic belt having excellent creep resistance and digital reproducibility. The electrophotographic belt is composed of a biaxially stretched cylindrical film, and the film includes a matrix including a thermoplastic resin and an electroconductive domain including an ionic electroconductive agent, and when a surface resistivity of the film in a circumferential direction is defined as A, and a surface resistivity of the film in a direction orthogonal to the circumferential direction is defined as B, A≥B is satisfied, and a tensile modulus of elasticity of the film in the circumferential direction is 1.0 GPa or more and 3.0 GPa or less.

Aspects of the present invention are directed to implementing transformation of an original entity into a verifiably authenticable entity in a heterogeneous communications network environment including at least a publisher computer, a server computer system, a customer computer, and a public record keeping system in a decentralized computational network which communicate with one another over a communications network such as the Internet. An electronic record of the original entity is created by the server computer system by associating a set of randomly produced unique identifiers to a physical indicia identifier which is extracted from an electronic file created by the publisher computer based on a digital reproduction of a portion of the original entity. A uniquely encrypted message associated with the electronic record of the original entity is published to a chain of data on a public record keeping system residing in nodes in a decentralized computational network which may be a Blockchain network. Verification of authenticity of an entity of interest relative to the original entity as a point of reference may include decrypting the uniquely encrypted message to identify whether a set of unique identifiers of interest associated with the entity of interest is published to the chain of data on the public record keeping system.

A phase error detection device detects a phase error, based on an output from an A / D conversion section that performs A / D conversion on an analog input signal in accordance with a sampling clock to generate a digital reproduction signal. The phase error detection device includes a phase error generation section that generates the phase error from the output from the A / D conversion section, and a phase error correction section that corrects the phase error. Herein, the phase error correction section determines a phase error detection range from past phase errors and, when the phase error generated by the phase error generation section is out of the phase error detection range, corrects the phase error.

Restoration of audio information embodied on a soundtrack of a motion picture film advantageously occurs by scanning the film with a beam of light to capture the image in the form of a digital signal via an imager. The digital signal undergoes storage in a storage mechanism (300) and subsequent processing via controller. The controller applies one or more statistical processing algorithms to eliminate deficiencies and to enhance the quality of the audio embodied in the soundtrack.

The invention discloses a simple and effective incomplete table identification and cross-page splicing method, which comprises the following steps of: correcting an incomplete table through straight line extraction and detection, obtaining an accurate position of the incomplete table by adopting a proposed incomplete table positioning and identification algorithm, and performing cross-page splicing, cell segmentation and the like on the incomplete table when an upper page and a lower page are incomplete. The method includes: firstly, adopting morphological projection to achieve straight line detection and form correction; performing corner detection by using Harris, pre-framing a region of interest, and judging whether a straight line exists in the pre-framed region or not to obtain an accurate table region; secondly, carrying out complete state detection on the head table and the tail table in the determined table area and carrying out cross-page splicing according to a splicing rule;and finally, performing cell segmentation on the segmented table, and achieving operations such as OCR identification and table digital reproduction database storage by using CRNN. According to the method, the special incomplete table can be effectively identified, cross-page splicing can be carried out, and the use method is simple and effective.

A digital recording device includes a data control circuit (2a), a memory (4), an encryption circuit (5), an interface (6), a DVD drive (8), and a CPU (3). When encryption is required during recording, data is temporarily accumulated in the memory (4). After the encryption circuit (5) is validated, the data is encrypted and recording of the DVD drive (8) to a recording medium is resumed. Thus, it is possible to operate the encryption circuit only when recording a program requiring a content protection and perform recording or reproduction from the required timing without interrupting the recording or reproduction even when the encryption circuit is in operation.

Novel system, methods, which include machine learning, and device for providing color and fashion recommendations, including for persons with visual impairment such as color blindness or complete blindness. Also, methods providing a data storage system for storing digital renditions of garments; providing a portable communication device to extract color and / or pattern from garments through use of a camera and at least one algorithm; providing a processor capable of accessing locally stored and / or remote information about or learning the preferred matching set of garments; assigning each garment in the set of garments a red-green-blue (RGB) value; providing a suitability ranking for matching compatibility of the garment or the set of garments; and providing recommendations for preferred matching garment or set of garments by organizing the garments in at least one queue selected from the group consisting of audial, tactile, visual or a combination thereof, wherein the individual imports garments or set of garments, through a series of photos or video, for bulk import into a virtual closet for the identification and assignment of type of garments or set of garments using human or computational methods.

A reproduction device reproduces a content recorded on an optical disc while correlating it with execution of an application supplied from a server. The reproduction device includes: a disc region detection unit (2) for detecting a region code from the optical disc; an application estimation unit (9) for estimating a region code allocated to the application from a server address; and a limit unit (12) for limiting reproduction of the content correlated with the execution of the application if the region code allocated to the reproduction device itself, the region code detected from the optical disc, and the estimated region code of the application do not coincide.