155 results about "Liveness" patented technology

An integrated signal sensor with processing power to augment a challenge from server and compute the response is proposed to guarantee that the sensed signal is live and not stored. The sensor-processor computes the response to the augmented challenge based on the signal charactersitics of the sensed signal and then transmits both the signal and the response. The host or the server can verify the response to authenticate liveness of the input image/signal and reject it if the response is different. Areas of application include automated biometrics and remote medical imaging.

An apparatus for identifying fake fingerprints has electrodes disposed along a platen surface of a fingerprint scanner and whether or not the skin of one or more fingers presented to the surface are real and alive is determined in accordance with analysis of electrical signals received from the electrodes. Electronics of the apparatus determines one or more liveness parameter(s) in accordance with signals received from electrodes. Information from an image of the fingerprint may be used to select which electrode signals to use for liveness detection. To further confirm the presence of a live finger(s), additional liveness parameter(s) of the pulse and/or temperature may also be sensed. The skin may be one of in contact with the platen of the fingerprint scanner, separated from direct contact with the platen's electrodes by an insulating layer or a pad, or not in physical contact with the platen or a pad thereupon.

Systems and methods are provided for recording a user's biometric features and generating an identifier representative of the user's biometric features and whether the user is alive (“liveness”) using mobile devices such as a smartphone. The systems and methods described herein enable a series of operations whereby a user using a mobile device can capture imagery of a user's face, eyes and periocular region. The mobile device is also configured analyze the imagery to identify and determine the position of low-level features spatially within the images and the changes in position of the low level features dynamically throughout the images. Using the spatial and dynamic information the mobile device is further configured to determine whether the user is alive and/or generate a biometric identifier characterizing the user's biometric features which can be used to authenticate the user by determining liveness and/or verify the user's identity.

A variety of techniques are disclosed for efficient liveness monitoring in a reliable publish/subscribe multicast system having at least one broker and at least one subscriber, by: at the broker, sending (310) a status request message to the subscriber, and at the subscriber, sending (350) a status response message to the broker to indicate liveness. Status responses by subscribers may be suppressed when at least a chosen minimum number (>=1) of subscribers send a response. This suppression (320-340) uses a system of "response claim" messages and random back-off timers. These provide the advantage that the efficiency of network usage is improved by reducing the number of unwanted packets that are sent.

Systems and methods are provided for recording a user's biometric features and determining whether the user is alive (“liveness”) using mobile devices such as a smartphone. The systems and methods described herein enable a series of operations whereby a user using a mobile device can capture a sequence of images of a user's face. The mobile device is also configured analyze the imagery to identify and determine the position of facial features within the images and the changes in position of features throughout the sequence of images. Using the change in position of the features, the mobile device is further configured to determine whether the user is alive by identifying gestures and comparing the identified gestures to a prescribed combination of facial gestures that are uniquely defined for the particular user.

Technologies are presented herein in support of a system and method for performing fingerprint recognition. Embodiments of the present invention concern a system and method for capturing a user's biometric features and generating an identifier characterizing the user's biometric features using a mobile device such as a smartphone. The biometric identifier is generated using imagery captured of a plurality of fingers of a user for the purposes of authenticating/identifying the user according to the captured biometrics and determining the user's liveness. The present disclosure also describes additional techniques for preventing erroneous authentication caused by spoofing. In some examples, the anti-spoofing techniques may include capturing one or more images of a user's fingers and analyzing the captured images for indications of liveness.

A network includes a connected device and a connected client. The device includes a receiver to receive ping messages, a counter to count the ping messages received, and a transmitter to transmit a reply message that includes a ping load value that is responsive to the count value. The client includes a timer to measure a delay time, a transmitter to transmit a ping message to the device after the delay time has elapsed since transmitting a previous ping message to the device, a receiver to receive the reply message, and a controller to adjust the delay time responsive to the device ping load.

In distributed multinode data processing systems, mechanisms are employed to insure that the nodes are continually informed about the liveness of the other nodes within node groups in the network and across networks. The method of the present invention employs the concept of node stability which it uses to provide indications of membership in a previous stable group as part of messages transmitted in a protocol for forming, maintaining and dissolving node groupings in such a way as to assure that all of the nodes in the group have a consistent indication of liveness status for all of the nodes within any given group of nodes.

Technologies are presented herein in support of a system and method for performing fingerprint recognition. Embodiments of the present invention concern a system and method for capturing a user's biometric features and generating an identifier characterizing the user's biometric features using a mobile device such as a smartphone. The biometric identifier is generated using imagery captured of a plurality of fingers of a user for the purposes of authenticating/identifying the user according to the captured biometrics and determining the user's liveness. The present disclosure also describes additional techniques for preventing erroneous authentication caused by spoofing. In some examples, the anti-spoofing techniques may include capturing one or more images of a user's fingers and analyzing the captured images for indications of liveness.

The liveness of routing protocols can be determined using a mechanism to aggregate liveness information for the protocols. The ability of an interface to send and receive packets and the forwarding capability of an interface can also be determined using this mechanism. Since liveness information for multiple protocols, the liveness of interfaces, the forwarding capability of interfaces, or both, may be aggregated in a message, the message can be sent more often than could individual messages for each of the multiple protocols. This allows fast detection of failures, and sending connectivity messages for the individual protocols, such as neighbor “hellos,” to be sent less often.

The invention relates to a video quality automatic evaluation method and an evaluation method, relating to the evaluation of wireless video communication, which can confirm the evaluation property, reduce needed reference data and reduce calculation complexity, therefore, the evaluation mode is adaptive to the evaluation application facing wireless network. The method comprises: processing content pre-check on the reference video not compressed; according to the average activity of each activity region, dividing the check on the video characters into high and low activity region character checks, to attain the check parameters representing the spatial domain and time domain characters which express the characters of the video sections in each activity region; weighting the check parameters of the spatial domain and time domain characters of each activity region to build the spatial domain and time domain character parameters of the whole video, realizing the projection between the check parameters and the subjective quality expression according to a preset video quality evaluation database, to realize the automatic evaluation on the video quality facing wireless network.

Described are techniques for use in determining a dynamic mirror service policy (DMSP) for a plurality of mirror devices. The DMSP determines which of the plurality of mirror devices services I/O operations associated with a logical volume (LV), such as a read operation, at a particular point in time. The particular DMSP may subsequently be recalculated using device statistics from a different time interval. Part of determining a DMSP includes using device statistics to determine the activity level of each LV. The activity levels of multiple LVs may be combined to determine the activity level associated with a particular mirror device. A mirror device is selected if it has the minimum activity of all the plurality of mirror devices. Seek minimization processing is performed to minimize the distance between LVs stored on a single mirror device. Parameters used in connection with determining a DMSP may be stored in a configuration file and may be dynamically modified. Techniques described may also be used in an embodiment having a static MSP.</PTEXT>

The embodiment of the invention discloses a live-broadcast processing method, device and equipment as well as a storage medium. The method comprises the following steps: combining a game video image of a live-broadcast room which corresponds to a anchor end user and anchor head portrait video images of two or more sides to generate merged display images when the operation that the anchor end userinputs and is confirmed to enter a PK mode is detected; obtaining audio flow of two or more sides, and synthesizing the audio flow of two or more sides into audio mixed flow; pushing the merged display images and the audio mixed flow to an audience end of a watching live-broadcast room for allowing the audience end to display the merged display images and play the audio mixed flow. With the adoption of the technical scheme of the invention, degree of participation of the user can be improved, a usage rate of the user can be increased, interestingness of the user is improved, and liveness of the user is improved.