WO2021102620A1 - Dispositif et procédé d'imagerie optique d'iris de grand champ à longue distance - Google Patents

Dispositif et procédé d'imagerie optique d'iris de grand champ à longue distance Download PDF

Info

Publication number
WO2021102620A1
WO2021102620A1 PCT/CN2019/120538 CN2019120538W WO2021102620A1 WO 2021102620 A1 WO2021102620 A1 WO 2021102620A1 CN 2019120538 W CN2019120538 W CN 2019120538W WO 2021102620 A1 WO2021102620 A1 WO 2021102620A1
Authority
WO
WIPO (PCT)
Prior art keywords
iris
optical imaging
imaging
image
focusing optical
Prior art date
Application number
PCT/CN2019/120538
Other languages
English (en)
Chinese (zh)
Inventor
倪蔚民
Original Assignee
苏州思源科安信息技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州思源科安信息技术有限公司 filed Critical 苏州思源科安信息技术有限公司
Priority to PCT/CN2019/120538 priority Critical patent/WO2021102620A1/fr
Publication of WO2021102620A1 publication Critical patent/WO2021102620A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition

Definitions

  • the present invention relates to the technical field of optical imaging, in particular to a device and method for long-distance large-field iris optical imaging.
  • Known iris imaging devices have the following drawbacks.
  • the imaging time of acquiring images in a long working distance and large working field of view scene exceeds 1-3s, and the user cannot maintain a consistent and relatively static state for such a long time, due to the image iris diameter Requires a large magnification requirement of >200pixel, resulting in a very slight movement that can cause the field of view of the iris imaging system to be readjusted, zoom focus, and illumination.
  • traditional ranging includes software mapping the iris diameter or binocular distance, because the error is too large due to the variation of the population that is greater than 20%, and the accurate working distance information cannot be provided, which directly affects the overall performance.
  • physical measurements such as infrared, ultrasound, and tof.
  • the distance is too large to provide accurate working distance information under the scenes of long working distance and large working field of view.
  • the known technology has image quality such as depth of field, image brightness, image relative illuminance, illuminating light source radiation intensity, and iris irradiance of the eye. In the scene of long working distance and large working field of view, the consistency cannot be guaranteed, and even the difference is several times.
  • the traditional lighting source is adjusted with the inverse square of the working distance, and the radiation intensity of the non-constant light source (such as the range of 2 to 3 times the working distance, The angle of view changes by 2 to 3 times, and the radiation intensity changes by 4 to 9 times), resulting in the inability to meet the requirements of constant field of view and radiation illuminance in a large range at the same time.
  • the traditional improved imaging field of view uses a mechanical pan/tilt structure, which leads to complex control, low positioning error accuracy, low stability and reliability, serious problems in power consumption, volume and noise life, and time-consuming imaging after waiting for the adjustment of the pan/tilt position Very severe imaging speed is very slow.
  • One aspect of the present invention is to provide a device for optical imaging of a long-distance iris with a large field of view, the device comprising:
  • Iris optical tracking system iris zoom focusing optical imaging system, LED illumination light source radiation system, image display feedback system, image processing and drive control system;
  • the iris optical tracking system includes a 3D depth imaging unit for performing 3D physical space point coordinate acquisition;
  • the iris zoom focusing optical imaging system includes an optical zoom focusing lens group and an ultra-high-resolution image imaging sensor, which is used to perform focal length and/or focus position adjustment of iris imaging according to 3D physical space point coordinates, and ultra-high-resolution image imaging Sensor physical imaging;
  • the LED illuminating light source radiation system includes a solid angle of radiation intensity and/or a direction angle of radiation intensity, which is used to perform response to different working radii/distances corresponding to the iris zoom focusing optical imaging system between the field of view angles according to the 3D physical space point coordinates. Combination control of matching relationships;
  • the image display feedback system includes a display screen for real-time display of current images and/or status information
  • the image processing and drive control system is connected to the iris optical tracking system, the iris zoom focusing optical imaging system, the LED illumination light source radiation system, and the image display feedback system, and realizes the drive and feedback control between each system unit.
  • the imaging field angle of the 3D depth imaging unit is greater than or equal to the imaging field angle of the iris zoom focusing optical imaging system.
  • the 3D depth imaging unit includes 3D TOF depth imaging or structured light depth imaging, or binocular stereo vision imaging.
  • the ultra-high resolution image imaging sensor has a resolution of at least 8K.
  • D is the optical center of the LED illumination light source radiation system and the optical center of the iris zoom focusing optical imaging system Distance
  • R is the working radius of the iris zoom focusing optical imaging system.
  • PXiris is the pixel resolution in the X horizontal direction of the iris zoom focusing optical imaging system
  • PYiris is the Y vertical pixel resolution of the iris zoom focusing optical imaging system
  • EFLiris is the focal length position
  • ⁇ PR*PSiris
  • PR is the image resolution of the physical diameter of the iris
  • PSiris is the pixel unit resolution of the ultra-high resolution image imaging sensor of the iris zoom focusing optical imaging system
  • R is the working radius of the iris zoom focusing optical imaging system.
  • the LED illumination light source radiation system and the iris focal length focusing optical imaging system are configured as:
  • the combined imaging mode of global pixel exposure (integration) and illumination radiation in the synchronization pulse external trigger or the synchronization pulse internal trigger mode in the combination of the filter in which:
  • PR is the image resolution of the physical diameter of the iris
  • m is the pixel scale of the motion blur image that is predetermined to be controlled, the unit is pixel;
  • the synchronization pulse exposure (integration) frequency and the synchronization pulse illumination radiation frequency Fpulse of the combined imaging mode, the synchronization pulse illumination radiation frequency Fpulse [10, 30] Hz,
  • the LED illuminating light source radiation system generates synchronous pulsed illuminating radiation on the surface of the iris.
  • Eiris( ⁇ ) is the irradiance on the surface of the iris.
  • Another aspect of the present invention is to provide a method for long-distance large-field-of-view iris optical imaging, the method comprising:
  • the image processing and drive control system implements the drive and feedback control process between the iris optical tracking system, the iris zoom focusing optical imaging system, the LED illumination light source radiation system, and the image display feedback system:
  • the 3D depth imaging unit of the iris optical tracking system obtains the 3D coordinates of the key points of the iris, and converts the relative coordinates to 3D physical space points to achieve real-time synchronous iris optical imaging tracking;
  • the image display feedback system displays the current image and/or status information in real time
  • the image display feedback system realizes real-time synchronous display that the current image is an infrared image imaged by a 3D depth imaging unit, an RGB visible light unit imaging image or an iris zoom focusing optical imaging image.
  • the feedback control iris imaging tracking system includes:
  • EFLface [(PXface 2 +PYface 2 ) 1/2 *PSface/2]/tan(FOVface/2)
  • PXface is the X horizontal pixel resolution of the 3D depth imaging unit
  • PYface is the Y vertical pixel resolution of the 3D depth imaging unit
  • PSface is the pixel unit resolution of the 3D depth imaging unit
  • EFLface is the effective imaging focal length of the 3D depth imaging unit.
  • KPface(Xe,Ye,Ze) KPface(xe*z/EFLface,ye*z/EFLface,z).
  • Xoffset, Yoffset, Zoffset is the 3D physical position coordinate offset of the 3D depth imaging unit relative to the iris zoom focusing optical imaging system.
  • the feedback control iris zoom focusing optical imaging system includes:
  • ⁇ PR*PSiris
  • PR is the image-side resolution of the physical diameter of the iris
  • R is the working radius of the iris zoom focusing optical imaging system
  • SOC is the minimum physical spot resolution parameter of the iris zoom focusing optical imaging system.
  • the feedback control LED illumination light source radiation system includes:
  • the radiation direction angle of the LED illumination light source ⁇ arctan (D/R),
  • D is the optical center of the LED illumination light source radiation system and the optical center of the iris zoom focusing optical imaging system Distance
  • R is the working radius of the iris zoom focusing optical imaging system
  • PXiris is the pixel resolution in the X horizontal direction of the iris zoom focusing optical imaging system
  • PYiris is the Y vertical pixel resolution of the iris zoom focusing optical imaging system
  • EFLiris is the focal length position
  • ⁇ PR*PSiris
  • PR is the image resolution of the physical diameter of the iris
  • PSiris is the pixel unit resolution of the ultra-high resolution image imaging sensor of the iris zoom focusing optical imaging system
  • R is the working radius of the iris zoom focusing optical imaging system.
  • the device and method for long-distance and large-field-of-view iris optical imaging provided by the present invention can simultaneously realize constant field of view and radiation illuminance in a large range, and has the following advantages:
  • Constant magnification is the same iris diameter of the imaged image.
  • the moving speed up to 1m/s is not affected by motion blur, and resists the interference of various ambient light>10,000lux noise conditions.
  • Fig. 1 schematically shows a schematic diagram of a device for optical imaging of a long-distance large field of view iris in an embodiment of the present invention.
  • the field of view of the 3D depth imaging unit is the predetermined working field of view FOVface
  • the LED illuminating light source radiates the LED illuminating light source on the left and right sides of the system
  • the LED illuminating light source radiates the left and right side LED illuminating light source of the system
  • the solid angle of the left/right illuminating light source radiation intensity of the LED illumination light source radiation system is matched with the far end working radius/distance Rfar/Zfar of the iris zoom focusing optical imaging system Field of view FOViris-far,
  • the solid angle of the left/right illuminating light source radiation intensity of the LED illumination light source radiation system is matched with the near-end working radius/distance of the iris zoom focusing optical imaging system.
  • the left/right illuminating light source radiation intensity direction angle of the LED illumination light source radiation system is matched with the near-end working radius/distance Rnear/Znear of the iris zoom focusing optical imaging system
  • the left/right illuminating light source radiation intensity direction angle of the LED illumination light source radiation system matches the far end working radius/distance Rfar/Zfar of the iris zoom focusing optical imaging system
  • a long-distance large-field iris optical imaging device 100 includes: iris optics Tracking system, iris zoom focusing optical imaging system, LED illumination light source radiation system, image display feedback system 160, image processing and drive control system 150.
  • the iris optical tracking system includes a 3D depth imaging unit.
  • the 3D depth imaging unit can adopt 3D TOF depth imaging or structured light depth imaging (for example, 940nm infrared VCSEL light source 110, imaging lens and image imaging sensor 111), or binocular stereo vision imaging (LED illumination light source, 2 groups installed at a fixed interval)
  • the parameter symmetrical imaging lens and image imaging sensor provide depth image information.
  • the iris zoom focusing optical imaging system includes an optical zoom focusing lens group 120, an optical filter 121, and an ultra-high resolution image imaging sensor 122.
  • the LED illuminating light source radiation system includes the combined control of the solid angle of the radiant intensity of the LED illuminating light source and/or the direction and angle of the radiant intensity.
  • the image display feedback system 160 includes a display screen for real-time display of current images and/or status information.
  • the imaging field angle 115 of the 3D depth imaging unit is greater than or equal to the imaging field angle 124/125 of the iris zoom focusing optical imaging system.
  • the ultra-high resolution image imaging sensor 122 has a resolution of at least 8K.
  • the image processing and drive control system 150 is connected to the iris optical tracking system, the iris zoom focusing optical imaging system, the LED illumination light source radiation system, and the image display feedback system, and realizes the drive and feedback control between each system unit.
  • a method for long-distance large-field-of-view iris optical imaging includes: the image processing and drive control system executes the drive and feedback control process between each system unit as follows:
  • the image display feedback system displays the current image and/or status information in real time.
  • the image display feedback system realizes real-time synchronous display of the current image as an infrared brightness image imaged by a 3D depth imaging unit, an RGB visible light unit image or an iris zoom focusing optical image.
  • the specific steps include:
  • EFLface [(PXface 2 +PYface 2 ) 1/2 *PSface/2]/tan(FOVface/2),
  • PXface is the X horizontal pixel resolution of the 3D depth imaging unit, pixel
  • PYface is the Y vertical pixel resolution of the 3D depth imaging unit, pixel
  • PSface is the pixel unit resolution of the 3D depth imaging unit, um/pixel;
  • EFLface is the effective imaging focal length of the 3D depth imaging unit, mm.
  • PXface 640pixels
  • PYface 480pixels
  • PSface 5.6um/pixel
  • EFLface 2.8mm.
  • a2 Define the 3D depth imaging unit to control and acquire the key points of the iris.
  • the well-known deep learning-based convolutional neural network CNN cascade model can reliably and accurately realize the functions of face region detection and eye positioning.
  • this embodiment adopts the independent or combined visible light RGB image imaging unit 114 to perform calibration and registration of the 3D depth imaging unit and the visible light RGB image imaging unit 114 in advance, and then further detect the face area in the RGB image And human eye positioning improves accuracy and reliability.
  • the RGB imaging unit can be used to detect the face when the device is in the standby state and trigger the system to enter the normal working state, thereby reducing the standby power consumption of the system.
  • the image formed by the visible light RGB image imaging unit is used in the image display feedback system to display the current image in real time.
  • KPface(xe,ye,z) KPface((xl+xr-PXface)/2*PSface, (yl+yr-PYface) )/2*PSface,z).
  • KPface (Xe, Ye, Ze) KPface (xe*z/EFLface, ye*z/EFLface, z).
  • Piris(X, Y, Z) (Xe-Xoffset, Xe-Yoffset, Ze-Zoffset),
  • (Xoffset, Yoffset, Zoffset) is the 3D physical position coordinate offset of the 3D depth imaging unit relative to the iris zoom focusing optical imaging system.
  • Perform synchronization control of the focal length and focus parameters of the iris zoom and focus optical imaging system including:
  • R is a predetermined working radius, including a predetermined proximal working radius Rnear116, a predetermined distal working radius Rfar118,
  • the predetermined working distance Z includes a predetermined near-end working distance Znear117 and a predetermined far-end working distance Zfar119.
  • the optical zoom operation can be performed after the R interval is changed by a certain predetermined range. If you keep the same focal length relative to the range of 5-10cm, this design is reasonable, and the iris diameter itself also varies from person to person.
  • k step number control range, k [1, 2]
  • DOF 2*FNO*SOC*(1+ ⁇ )/ ⁇ 2
  • FNO is the aperture parameter of the iris zoom focusing optical imaging system
  • the parameter range is [PF, 2PF]
  • PF PSiris/(1um/pixel)
  • SOC is The minimum physical spot resolution parameter of the iris zoom focusing optical imaging system.
  • the iris zoom focusing optical imaging system Due to the error of the depth information, the iris zoom focusing optical imaging system has a precision mechanical error in the actual manufacturing process, individual deviations, etc., resulting in 2k+1 times the step size control position, the step size is ⁇ *DOF, generally 3-5 steps.
  • the range is completely in the predetermined image-side focus position, ensuring that the focus position is within the object depth of field range of +-DOF/2 (equivalent, within the image-side depth of field range of +- ⁇ *DOF/2), and at the same time such a small number of control steps The number can be guaranteed to be completed in 0.1s.
  • the above-mentioned design of the present invention guarantees a constant range of depth of field, and at the same time realizes that the focus position is within the range of depth of field of the image plane.
  • Ideal aspheric optical glass/plastic hybrid 2 liquid lens liquid lenses independently control the focal length EFLiris and focus FOCUS respectively.
  • the above design requires both focal length and focus position to be converted to the correspondingly designed imaging optical system.
  • the diopter of the 2 liquid lenses is the unit specification Compared with the complex cam curve control driven by traditional stepping motors, the liquid lens has a diopter and voltage/current corresponding linear response optical property relationship, which can greatly simplify the driving control process, and this design can greatly reduce the overall imaging The number of system components (12-16 pieces in 3-4 groups).
  • the current liquid lens has a limited clear aperture typically such as 6-10mm, and a limited diopter range -10 to +20 diopters, the wavefront error increases to ⁇ /10 at large diopters, but Attributable to the FNO value and long focal length application requirements of the depth of field, it is suitable for the iris zoom focusing optical imaging system.
  • Optical designers can use the characteristics of liquid lens to optimize the design of the optical path. For example, select the appropriate exit entrance pupil in the optical path and design the FNO to solve the clear aperture.
  • the initial design of the zoom part of the optical system is to set the zoom liquid lens to work at 0 diopter optical power.
  • the far end working radius/distance corresponds to the maximum focal length.
  • the initial design of the focusing part of the optical system is to set the focusing liquid lens to work at the image plane position corresponding to the far end working radius/distance when the focusing liquid lens is at 0 diopter optical power.
  • D is the optical center of the LED illumination light source radiation system and the optical center of the iris zoom focusing optical imaging system Distance
  • R is the working radius of the iris zoom focusing optical imaging system.
  • ⁇ is the half field angle of the iris zoom focusing optical imaging system.
  • PXiris is the pixel resolution in the X horizontal direction of the iris zoom focusing optical imaging system, pixel.
  • PYiris is the Y vertical pixel resolution of the iris zoom focusing optical imaging system, pixel.
  • OP is the total optical power of the radiation system of the LED lighting source, mw.
  • the solid angle ⁇ ( ⁇ ) of the radiation intensity of the LED illumination light source defines the solid angle distributed in the corresponding range of the radiation intensity peak direction when the ratio of the radiation intensity I ⁇ of the LED illumination light source radiation system to the peak radiation intensity Ipeak is equal to ⁇ .
  • ⁇ I ⁇ /Ipeak
  • ⁇ is the relative illuminance of light radiation received by the imaging image surface of the predetermined custom iris focal length focusing optical imaging system, such as 0.5 or 0.707, higher means the relative illuminance is more evenly distributed.
  • Eiris( ⁇ , ⁇ ) OP/( ⁇ ( ⁇ )*R 2 )*cos 3 ( ⁇ ).
  • the near-end working radius/distance Rnear/Znear field of view FOViris-near124 of the iris zoom focusing optical imaging system As shown in Figure 1, the near-end working radius/distance Rnear/Znear field of view FOViris-near124 of the iris zoom focusing optical imaging system.
  • the iris zoom focuses the near-end working radius/distance Rnear/Znear of the object plane imaging area 126 of the optical imaging system.
  • the far-end working radius/distance Rfar/Zfar imaging area 127 of the object plane of the iris zoom focusing optical imaging system The far-end working radius/distance Rfar/Zfar imaging area 127 of the object plane of the iris zoom focusing optical imaging system.
  • the LED illumination light source radiates the left and right sides of the LED illumination light source 130L/130R of the system.
  • the LED illumination light source radiates the left and right side LED illumination light sources 131L/131R of the system.
  • the solid angle of the radiation intensity of the left/right illuminating light source of the LED illumination light source radiation system is matched with the far end working radius/distance Rfar/Zfar field of view angle of the iris zoom focusing optical imaging system FOViris-far132L/132R.
  • the solid angle of the radiation intensity of the left/right illuminating light source of the LED illumination light source radiation system is matched with the near-end working radius/distance Rnear/Znear field of view angle of the iris zoom focusing optical imaging system FOViris-near133L/133R.
  • the left/right illuminating light source radiation intensity direction angle of the LED illumination light source radiation system matches the near-end working radius/distance Rnear/Znear134L/134R of the iris zoom focusing optical imaging system.
  • the left/right illuminating light source radiation intensity direction angle of the LED illumination light source radiation system matches the far end working radius/distance Rfar/Zfar135L/135R of the iris zoom focusing optical imaging system.
  • the present invention can realize the essentially constant total light power of the LED illumination light source radiation system, by dynamically changing the radiation intensity of the LED illumination light source, the light radiation intensity of the solid angle distribution is changed by the same amount, regardless of the iris zoom focusing optical imaging.
  • How the system changes in the far/near-end working radius [Rfar, Rnear]/distance [Zfar, Znear] and the corresponding field of view [FOViris-far, FOViris-near] according to the formula Eiris( ⁇ , ⁇ ) is kept close to constant , And can fully match the working radius/distance and the corresponding iris optical zoom focusing optical imaging system's field of view angle.
  • ⁇ is the imaging incident angle of the iris focal length focusing optical imaging system
  • ⁇ [0, ⁇ ]
  • ⁇ is the optical reflectivity of the iris biological tissue.
  • Eimage is constant, that is, the imaged image brightness Iimage is constant.
  • QE is the photon-electronic quantum conversion efficiency unit e-/(mw*um 2 )/s
  • G is the unit conversion gain unit mv/e-
  • ADC is the analog voltage/digital brightness conversion unit LSB/mv.
  • CMOS SENSOR technology performs photon-electronic quantum conversion using PD silicon-based photodiodes, which are not efficient.
  • Cutting-edge QF quantum film or OPF organic photosensitive film technologies have natural high quantum conversion efficiency for infrared photons, and global shutter. The properties are ideally preferred.
  • the LED illuminating light source radiation system is controlled by an array combination with different radiation direction angles and radiation intensity solid angles, so as to match the corresponding iris focal length and focus the field of view angle range of the optical imaging system [FOViris-far, FOViris-near], Working radius range [Rfar, Rnear], or working distance range [Zfar, Znear].
  • the LED illumination light source radiation system and the iris focal length focusing optical imaging system are combined and configured to have a combined control response to the synchrotron radiation intensity direction angle and the radiation intensity solid angle, so as to realize the response of the LED illumination light source radiation system in different 3D physical space points.
  • the corresponding matching relationship between the field of view angles of the iris zoom focusing optical imaging system corresponding to different working radii/distances meets the constant imaging image brightness within the predetermined working field of view and working distance, and the constant imaging image contrast, constant The radiant power of the LED lighting source system and the constant irradiance of the iris of the eye.
  • the LED illumination light source radiation system and the iris focal length focusing optical imaging system are configured as a global pixel exposure (integration) and illumination radiation combined imaging mode of synchronous pulse external triggering or synchronous pulse internal triggering.
  • the synchronization pulse exposure (integration) time and the synchronization pulse illumination radiation time Tpulse ⁇ m/(PR*speed), speed is the predetermined controlled movement speed such as 1m/s
  • m is the predetermined controlled motion blur image pixel scale, m ⁇ 10pxiels.
  • LED illumination light source radiation system generates synchronous pulse illumination radiation on the iris surface irradiance Tpulse*Fpulse*Eiris( ⁇ ) ⁇ 10mw/cm2/s to ensure that the eye radiation biological safety is met.
  • the iris focal length focusing optical imaging system realizes the global pixel exposure (integration) and the combined imaging mode of the illumination radiation in the synchronization pulse external trigger or the synchronization pulse internal trigger mode under the combination of the filter.
  • Anti-interference performance under various light interference conditions Such as outdoor solar environment up to 10,000 lux or more.
  • the ultra-high-resolution image imaging sensor of the present invention has a resolution of at least 8K, which is above 8000*4000. Considering such ultra-high-resolution bandwidth and frame rate are limited, the present invention can use binning or subsampling in image quality processing.
  • the imaging mode improves the preprocessing speed of image imaging quality.
  • the present invention adopts multiple groups of iris focal length focusing optical imaging system arrays to achieve the corresponding group of several times to increase the field of view angle. It can be equivalently understood as the angle of view corresponding to the resolution of the corresponding multiple.
  • the protective window 123 can be made of full-transmission tempered optical glass, or more preferably, a filter that reflects visible light below 700nm and transmits infrared light from 700-900nm, which can protect the internal optical components while the user cannot observe the internal structure by reflecting visible light Provide users with visual feedback in their natural state. Furthermore, filtering visible light can increase the focal length of the iris and focus the optical imaging system to eliminate interference with external non-imaging wavelength stray light, and further improve the image quality SNR.
  • the invention provides a long-distance large-field-of-view iris optical imaging device and method, which simultaneously realizes the constant viewing angle and radiation illuminance in a large range.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Bioinformatics & Computational Biology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Evolutionary Biology (AREA)
  • Evolutionary Computation (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Studio Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention concerne un dispositif d'imagerie optique d'iris de grand champ à longue distance (100), comprenant : un système de suivi optique d'iris, comprenant une unité d'imagerie de profondeur 3D ; un système d'imagerie optique de focalisation de zoom d'iris, comprenant un ensemble lentille de focalisation de zoom optique (120) et un capteur d'imagerie d'image à ultra-haute résolution (122), utilisé pour exécuter des ajustements d'une longueur focale et/ou d'une position de focalisation d'imagerie d'iris selon une coordonnée de point d'espace physique 3D, le capteur d'imagerie d'image à ultra-haute résolution (122) étant physiquement imagé ; un système de rayonnement de source de lumière d'éclairage à DEL, comprenant un angle solide d'intensité de rayonnement et/ou un angle de direction d'intensité de rayonnement et utilisé pour exécuter, en fonction de la coordonnée de point d'espace physique 3D, la commande combinée en réponse à la relation de correspondance entre des champs de vision du système d'imagerie optique de focalisation de zoom d'iris correspondant à différent(e)s rayons/distances de travail ; et un système de commande d'entraînement et de traitement d'image (150), utilisé pour réaliser la commande d'entraînement et de rétroaction parmi des unités de système. Le dispositif et son procédé d'imagerie peuvent assurer la constance de l'éclairement énergétique dans un grand champ de vision.
PCT/CN2019/120538 2019-11-25 2019-11-25 Dispositif et procédé d'imagerie optique d'iris de grand champ à longue distance WO2021102620A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/120538 WO2021102620A1 (fr) 2019-11-25 2019-11-25 Dispositif et procédé d'imagerie optique d'iris de grand champ à longue distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/120538 WO2021102620A1 (fr) 2019-11-25 2019-11-25 Dispositif et procédé d'imagerie optique d'iris de grand champ à longue distance

Publications (1)

Publication Number Publication Date
WO2021102620A1 true WO2021102620A1 (fr) 2021-06-03

Family

ID=76128622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/120538 WO2021102620A1 (fr) 2019-11-25 2019-11-25 Dispositif et procédé d'imagerie optique d'iris de grand champ à longue distance

Country Status (1)

Country Link
WO (1) WO2021102620A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000005149A (ja) * 1998-06-18 2000-01-11 Matsushita Electric Ind Co Ltd 虹彩撮像装置及び、その虹彩撮像方法
CN1892676A (zh) * 2005-06-03 2007-01-10 沈洪泉 面部/虹膜组合光学成像的装置及方法
CN101059835A (zh) * 2006-04-18 2007-10-24 南京大学 自动跟踪无侵害虹膜图像采集装置
CN101520838A (zh) * 2008-02-27 2009-09-02 中国科学院自动化研究所 自动跟踪和自动变焦的虹膜图像获取方法
CN101770573A (zh) * 2010-01-14 2010-07-07 沈洪泉 用于虹膜识别的自动聚焦虹膜图像成像装置及其控制方法
US20120154536A1 (en) * 2010-02-17 2012-06-21 David Stoker Method and apparatus for automatically acquiring facial, ocular, and iris images from moving subjects at long-range

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000005149A (ja) * 1998-06-18 2000-01-11 Matsushita Electric Ind Co Ltd 虹彩撮像装置及び、その虹彩撮像方法
CN1892676A (zh) * 2005-06-03 2007-01-10 沈洪泉 面部/虹膜组合光学成像的装置及方法
CN101059835A (zh) * 2006-04-18 2007-10-24 南京大学 自动跟踪无侵害虹膜图像采集装置
CN101520838A (zh) * 2008-02-27 2009-09-02 中国科学院自动化研究所 自动跟踪和自动变焦的虹膜图像获取方法
CN101770573A (zh) * 2010-01-14 2010-07-07 沈洪泉 用于虹膜识别的自动聚焦虹膜图像成像装置及其控制方法
US20120154536A1 (en) * 2010-02-17 2012-06-21 David Stoker Method and apparatus for automatically acquiring facial, ocular, and iris images from moving subjects at long-range

Similar Documents

Publication Publication Date Title
CN111556306B (zh) 一种远距离大视场虹膜光学成像的装置及方法
CN106662755B (zh) 特别借助于光学反馈为设备的透镜调焦距的光学设备
CN108205374B (zh) 一种视频眼镜的眼球追踪模组及其方法、视频眼镜
KR102669768B1 (ko) 동공 검출 및 시선 추적을 위한 이벤트 카메라 시스템
CN111727398A (zh) 用于瞳孔转向的集成增强现实头戴式显示器
US20180074320A1 (en) Dynamic Draft for Fresnel Lenses
CN104094280A (zh) 用于高分辨率视线跟踪的系统和方法
CN111766047B (zh) 一种模拟人眼的激光显示视觉散斑检测装置
CN103945136A (zh) 高用户使用体验度的虹膜图像光电成像系统
CN111091067A (zh) 一种远距离大视场虹膜光学成像的装置及方法
US20110298912A1 (en) Wavefront sensing for biometric imaging
WO2021098132A1 (fr) Dispositif et procédé d'imagerie optique d'iris à grand champ de vision à distance
US20180235465A1 (en) Eye gaze tracking
CN212410025U (zh) 一种模拟视觉感知的激光显示散斑测量装置
WO2021102620A1 (fr) Dispositif et procédé d'imagerie optique d'iris de grand champ à longue distance
WO2021102619A1 (fr) Dispositif et procédé d'imagerie optique d'iris à grand champ de vision à longue distance
CN111079552A (zh) 一种远距离大视场虹膜光学成像的装置及方法
US10718949B1 (en) Display apparatus and method of displaying
CN209783873U (zh) Tof相机杂散光检测装置
CN112882199A (zh) 一种高性能机载头戴微光夜视光学系统
US20230252671A1 (en) Gaze Tracking
US20240176415A1 (en) Light field based eye tracking
WO2023246816A1 (fr) Système optique de suivi oculaire et dispositif monté sur la tête
CN103345049A (zh) 一种可控发光面大小的变焦激光照明器
CN212674284U (zh) 一种模拟人眼视角的亮度检测装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19954629

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19954629

Country of ref document: EP

Kind code of ref document: A1