The reader images of securities
(57) Abstract:The invention relates to a control device authentication securities (notes), their deterioration and contamination, image analysis banknotes in different parts of the spectrum for sorting banknotes for automatic sorting machines. The technical result is to increase the accuracy of control of banknotes while simplifying digital processing. The reader images of securities containing site transportation of banknotes, lighting unit, creating a uniform illumination of the banknote in the control zone, the receiving device (video camera), blocks conversion of signals (BPS) and the computing unit (IU) for signal processing and comparison with reference data, the receiving device is performed by splitting the light flux after the lens through the semitransparent mirror so that the same images are simultaneously projected onto the same cell of photometric, the lighting unit may be performed on fluorescent lamps for lighting controlled zone on the banknote in the visible part of the spectrum and rows (lines) infrared emitting diodes. 1 C.p. f-crystals, 2 Il. The invention otnorot in different parts of the spectrum for sorting banknotes for automatic sorting machines.Known monitoring device banknotes , containing site transportation of banknotes, the illuminator, creating a uniform illumination of the banknote in the control zone, the lens and two or more linear photometric, on which is projected the image of the monitoring area of the banknote. Photometric are in the image planes are parallel to each other and in front of each of them are set filters on a specific part of the spectrum, such as visible and infrared. The number of elements (cells) in the line of photometric determines the resolution, which reads the image across the banknote, and the field of view defined by the size of photometric and parameters of the optical system, covers the width of the banknote. If the bill is moving with velocity V, and the sample of all N cells of photometric equal to t, then the distance between the lines in the read image on the banknote is s = Vt, which determines the resolution and the scale of the image along the banknote. Obviously, to obtain an undistorted image of the banknote need to either stabilize the speed of movement of the banknote, or just to monitor and recalculate the scale of the image. In addition, in the known device fotometricheskii of photometric require additional recalculation of coordinates with a reasonably accurate account of the speed of movement of the banknote, as in the authenticity control of securities necessary to analyze images of the same areas in different parts of the spectrum, i.e. to compare the data obtained with different photometric. In this device the speed of movement of the banknote and the reading speed (periods survey of photometric) is not synchronized, so the precise combination of images with different photometric causes considerable difficulties, since it is necessary to take into account many parameters: the speed of movement of the banknote, the distance between photometrically, the magnification optics, etc. Should also be noted that this device can be used illuminators of different designs, creating uniform lighting of the controlled area of the sheet, but these lights do not provide shadowless lighting. Such lighting is necessary for control of crumpled banknotes, when directed radiation creates shadows from surface roughness, which leads to image distortion and ultimately to the deterioration of the inspection results.Objectives of the invention are: a) improve the accuracy of control of banknotes while simplifying digital image processing by creating a reader images, in which the one hundred (in the direction of motion) do not depend on the speed controlled banknote; b) increasing the reliability of control creased and old banknotes by creating a uniform shadow-free lighting in the controlled area of the banknote.This is accomplished as follows. The reader images of banknotes contains site transportation of banknotes, the illuminator designed to create a uniform illumination of the banknote in the area of its control, the receiving device containing a lens, at least two linear of photometric facing a set of optical filters with the transmission of the luminous flux in different spectral regions, blocks conversion of signals (BPS) and the computing device (WS) designed for signal processing and comparison with reference data. In contrast to the known device site transportation of banknotes supplemented by a sensor monitoring the movement of banknotes, the receiving device is configured to split the light flux after the lens through the semitransparent mirror so that the same image of the banknote simultaneously projected onto the same cell of photometric, signals from which are used to convert them into digital signals in blocks conversion of signals in the device introduction them in the specified computing device, signal inputs of buffer devices are connected to the outputs of the blocks conversion of signals, their gate inputs connected with the output of the specified sensor, and outputs associated with the specified computing device. In addition, the illuminator may include a fluorescent lamp for lighting control zones in the visible spectrum and infrared light emitting diodes (IRD), which are arranged on both sides of the control zone and intended to create a uniform and shadow-free lighting control zones.Independent of the speed of movement of the banknote combining images with different photometric is achieved by the fact that the luminous flux after the lens is divided through the semitransparent mirror into two streams, each of which is routed through the appropriate filter for your photometric. Photometric and mirror are mounted so that the image on photometric match, that is, each element of the image falls on the same cell number in both photometric. In this design you can easily increase the level of the optical filter by mirror with different coefficients of reflection and transmission for different parts of the spectrum. For example, in the inventive device, the ratio propuskanie the CLASS="ptx2">Independent of the speed scale of the image along the banknote obtained as follows. In the device introduces an additional displacement sensor of the banknote, such as pulse (incremental) sensor ID associated with the belt transportation of banknotes. The number of pulses per revolution are chosen so that for the period between two pulses of the banknote has passed a certain distance s. Read the images from each of photometric (survey of all cells in the linear photometric) is performed with a period t. With the observed condition: t< between pulses row fetching the contents of the BFU is updated. This ensures a stable and uniform scanning an image of the banknote when changing the speed of its movement to a considerable extent.The described device is manufactured and tested in action at the sorting machines of the type BARS, developed and manufactured at the company "data CENTER" in Yekaterinburg).Literature
1. PCT application WO 96/36021, G 07 D 7/00. 1. The reader of banknote images containing site transportation of banknotes, the illuminator designed to create a uniform illumination of the banknote in the area of its control, the receiving device s with the transmission of the luminous flux in different spectral regions, blocks conversion of signals and computing device for processing and comparison with reference data, wherein the node of the transport of banknotes supplemented by a sensor monitoring the movement of banknotes, the receiving device is configured to split the light flux after the lens through the semitransparent mirror so that the same image of the banknote simultaneously projected onto the same cell line photometric, signals from which are used to convert them into digital signals in blocks conversion of signals in the device entered the buffer for intermediate storage of the above digital signals and transmit them to the specified computing device, signal inputs of buffer devices are connected to the outputs of the blocks conversion of signals, their gate inputs connected with the output of the specified sensor, and outputs associated with the specified computing device.2. The device according to p. 1, wherein the illuminator includes a fluorescent lamp for lighting control zones in the visible spectrum and infrared emitting diodes, which are arranged on both sides of the control zone and dedicated to superior quality products
FIELD: optical recognition of images.
SUBSTANCE: device has , placed serially along and symmetrically to its axis, gathering lens, light source, solid screen, diaphragm with aperture, mounted with possible rotation, and photo-detector, means for space placement of entrance port relatively to identification element and electrical processing block, recording and comparing output electric signals of photo-detector. Light source is placed in focal plane of lens, and solid screen - right behind it. Photo-detector is made one-element with expanded sensitive area, enveloping all optical radiation, sent through diaphragm aperture in its any position.
EFFECT: lesser dimensions, simplified construction.
4 cl, 2 dwg
FIELD: technology for reading and transferring images of papillary patterns.
SUBSTANCE: system contains light sources, optical system, including, among other parts, an objective with aperture diaphragm and optical element, and multi-element photo-receiver.
EFFECT: decreased linear dimensions of optical system, increased trustworthiness of recognition of real papillary pattern and fake, increased contrast of different images of papillary patterns, decreased cost of system.
2 cl, 6 dwg
FIELD: spatial light modulator, in particular, spatial light modulator with radially oriented active light modulation sectors for radial and angular light ray analysis, including Fourier transformation optical images, determining of characteristics of search, coordination or identification of image form content.
SUBSTANCE: segmented radial spatial light modulator has active optical area, containing a set of extended radially active optical modulator sectors, positioned on different angular directions relatively to central axis. Aforementioned light modulator is used during separation and localization of parts of optical images of Fourier transformation from images for determining image characteristics by means of form for registration, preservation, extraction, search and comparison to other images for coordination or almost full coordination. Collateral images may be added to images for increasing optical strength in optical image of Fourier transformation without addition of new content of form and for successive comparison to characteristics of form of another image for identification of almost full coordination in addition to coordination.
EFFECT: increased resolution of spatial f of image along each angular direction.
3 cl, 29 dwg
FIELD: engineering of devices for optical recognition of objects with optical encoding.
SUBSTANCE: in accordance to the invention, a banknote with light-active protective element is positioned along the transportation trajectory, irradiated by a source of stimulating effect and position of protective element is recognized by means of registration of radiation from protective element, excitation source is directed into detected location and protective element is irradiated, additional radiation from light-active protective element, received in response to light from excitation source, is registered. Recognition stage is realized using a camera with single row scanning, scanning axis of which is parallel or perpendicular to transpiration axis. Registered additional radiation may represent optical code for recognition of at least one special feature of a banknote.
EFFECT: ensured control over position and orientation of light-active materials, used in recognition process.
3 cl, 15 dwg
FIELD: physics; computer facilities.
SUBSTANCE: invention concern to automation of reading and transmission to biometric information systems of images papillary patterns, in particular fingers and palms. The anamorphic system of reading PD contains a radiant source (RS) with a matrix of radiating devices, the optical system (OS) including, an objective with an elliptic aperture diaphragm and an optical device (OD) for applying of fingers and palms, and a multielement photodetector (MP). Thus one of the OD surfaces is executed refracting-spherical, protuberant outside. The MP is joined to the controller and it is canted to an optical axis. AI programm-hardware-controllable. The direction of radiation of RS in OD projects, at passage through OD in OS, on MP a place of immediate touch papillar lines with working facet OD causing major signal strength in comparison with a place free from immediate touch. The RS is involved periodically.
EFFECT: reduction of linear dimensions of optical system at simultaneous scanning papillary drawings of fingers and palm, improvement of quality of the initial data arriving in systems of identification of the person, increase of contrast of various images of papillary drawings of fingers and a palm, system depreciation.
8 cl, 11 dwg
SUBSTANCE: device includes: radiation source, optical system with optical component for body contact, and multiple-unit photodetector, arranged in a casing. Contact surface of optical component is made spherical or aspherical; radiation source can be controlled by computer programme, its wavelength range is 0.10 to 9.50 mcm, source radiation is directed to contact surface of optical component with an extremity; optical system contains auxiliary radiation source with wavelength range 0.76 to 9.50 mcm, directed into an extremity and aimed through to optical component.
EFFECT: increasing exactness of human personality identification, raising contrast of papillary pattern images and spatial positioning of blood vessels, increasing raw data quality and volume for identification.
6 cl, 5 dwg
FIELD: physics; alarm.
SUBSTANCE: invention relates to reading and transferring images of papillary patterns of outermost phalanges and can be used in automated biometric information systems for person identification. The said anamorphotic system for reading papillary patterns comprises monochromated radiation sources (RS) and additional sources (AS) of radiation, an optical system (OS) with an objective lens provided with an aperture diaphragm and an optical element (OE) for applying the outermost phalanx and a multielement photodetector (MP). One of the surfaces of the optical element is reflective, spherical and cambered outwards. The multielement photodetector is connected to a controller and inclined with respect to the optical axis. The radiation source and additional radiation source are embodied such that they are hardware-device-controlled and make it possible to receive radiation with uniform illumination and contrast of images. The direction of radiation during passage through the optical element to optical system on the surface with papillary patterns is projected on the multielement photodetector on an area where a papillary line directly contacts the working surface of the optical element, thereby initiating a signal intensity which is greater than that of the area devoid of a direct contact. The additional radiation source and radiation source are periodically actuated.
EFFECT: increase in quality of initial data, input into the person identification system; increase in uniformity of illumination and contrast of different images of papillary patterns; reduction of polychromatic distortions and cost of the system.
15 cl, 14 dwg
SUBSTANCE: device has on its optical axis an objective lens, an image modulator mounted in the focal plane of the objective lens, an integrating photodetector and a unit for generating and picking up the spectrum of the rough surface image. In front of the focal plane of the said objective lens there is a movable prism for rotating the image. The image modulator is in form of a rotating standard disc on whose perimetre a standard periodic structure is deposited in form of a multi-turn spiral with varying frequency. The standard disc has a mark for synchronising movement of the prism with rotation of the modulator. An analysis window is fitted in front of the integrating photodetector such within its boundaries the transmission coefficient of the standard periodic structure has periodic distribution with constant spatial frequency. The integrating photodetector is connected to an automatic gain control (AGC) unit and a computer fitted with an analogue-to-digital converter (ADC) functions as a unit for generating and picking up the spectrum of the rough surface image.
EFFECT: design of an optical spectral processing device which enables to obtain a two-dimensional spectrum of a water surface image in real time.
3 cl, 4 dwg