Axis Ab

Axel Keskikangas

Viktor Edpalm

Song Yuan

Sebastian Hultqvist

Niclas Danielsson

Anton Eliasson

Xing Danielsson Fan

Mattias Pettersson

Håkan Ardö

Björn Völcker

John Rehn

Ted Hartzell

Martin Nilsson

Mazdak Farzone

Ola Mårtensson

Georgios Efstathiou

David Hjerpe

Johnny Wahnström

Pernilla Allansson

A plurality of feature vectors for moveable objects are received in a sequence of image frames captured during a first period. The feature vectors are received from a machine learning module trained to extract similar feature vectors in different image frames. An initial value is assigned to a first feature vector , or to a cluster of feature vectors identified in a second sequence of image frames preceding the first image frame. The indicator indicates whether vector is alive. For each subsequent image frame , the indicator is updated by: updating the value based on a similarity between the feature vector and the first feature vector or the cluster of feature vectors. If the value of the indicator indicates that the vector is alive, determining that there is a moveable object that is located in the captured scene at least the predetermined portion of the given period of time.

Device and method for determining whether there is a moveable object located in a scene at least a predetermined portion of a given period of time

A system and method trigger a second camera in a camera system to perform an action prior to an object appearing in the field of view of the second camera. The camera system includes the second camera for which a location and a field of view is known, and at least a first device for which a location is known. The method comprises receiving, in the second camera, information indicating that the object is approaching the field of view of the second camera. The received information indicates a location and a direction of movement of the object, and, in response to the received information, triggers the second camera to action prior to the object appearing in the field of view of the second camera by: generating an intra frame or initiating an intra refresh procedure, adjusting one or more image processing parameters, or adjusting an exposure time.

Camera information handover

A method of encoding an image comprises establishing whether objects constituting one or more predefined object types or performing one or more predefined event types are visible in the image; in response to establishing that the objects are visible, encoding at least one region-of-interest of the image using a non-generative image model, thereby obtaining first image data; and encoding any remainder of the image using a generative image model, thereby obtaining second image data, wherein use of the non-generative image model enables decoding of the first image data without relying on information derived from images other than the encoded image or, if the image is a frame in a video sequence, enables decoding of the first image data without relying on information derived from images outside the video sequence.

System and method for image coding using dual image models

An image processing device, a camera system, a non-transitory computer-readable storage medium, and methods for encoding two video image frames captured by one of two image sensors, wherein each of the video image frames depicts a respective portion of a scene. A respective overlapping area is identified in each of the video image frames, which overlapping areas both depict a same sub-portion of the scene, and a video image frame of the video image frames is selected. Compression levels are then set for the image frames, wherein respective compression levels are set for pixel blocks in the selected video image frame based on a given principle. Respective compression levels for pixel blocks in the overlapping area in the selected video image frame are selectively set higher or lower than respective compression levels that would have been set based on the given principle. The video image frames are then encoded.

Camera system and method for encoding two video image frames captured by a respective one of two image sensors

Upon detecting an event indicating enabling of security sensitive functionality of an electronic device, a value previously unknown to the electronic device is obtained and the current content of the data storage to a new current content of the data storage is updated according to an updating function based on the current content of the data storage and the value, wherein, without privileged access, the current content of the data storage can only be updated using the updating function. The value is further obtained in a management module and an expected new current content of the data storage is determined in the management module according to the updating function based on known original content of the data storage and the value. Upon determining that the new current content of the data storage differs from the expected new current content of the data storage, a validation module generates a security notification.

System, device and method for enabling identification when a security sensitive function has been previously enabled

A method of generating a segmentation outcome which indicates individual instances of one or more object classes for an image in a sequence of images is disclosed. The method comprises: determining () a coherent region of the image; processing () the image to determine a tensor representing pixel-specific confidence scores; generating () a series of temporary segmentation masks for the coherent region, wherein each temporary segmentation mask is generated by interpreting the tensor with respect to a single object class using a different temporary confidence score threshold; evaluating () the series of temporary segmentation masks to determine if an object mask condition is met; depending on the outcome of the evaluation, setting () the temporary confidence score threshold as a final confidence score threshold for the pixels of the temporary segmentation mask, or setting () a default confidence score threshold as a final confidence score threshold for the coherent region; and generating () a final segmentation outcome for the image.

Segmentation method

A method of providing an event-initiated video sequence, comprises a pre-event video sequence and a post-event video sequence. The pre-event image frames are stored in a non-processed format until such time that an event is taking place. By postponing the image processing of the pre-event video sequence, power savings are accomplished.

Event video sequences

A method for evaluating an updated analytical procedure in a monitoring system, comprising a plurality of monitoring device arranged to monitor similar environments, is provided. The method comprises identifying available processing resources, selecting a first monitoring device for which available processing resources have been identified, selecting a second monitoring device, acquiring monitoring data by the second monitoring device, and performing a current analytical procedure on the monitoring data. The method further comprises sending the monitoring data to the first monitoring device, performing, in the first monitoring device, an updated analytical procedure on the monitoring data, and evaluating the updated analytical procedure based on the outcome of the current analytical procedure and the updated analytical procedure.

Verification of updated analytical procedures in monitoring systems

A method, implemented in a device, for remote resetting of the device to factory default settings, the device comprising an electric circuit adapted to carry out the factory default reset and a secure processing and storage environment, SPSE, the method comprising: receiving, at the SPSE, a request to reset the device to factory default settings and a challenge associated with the request, wherein the request and the challenge are received via a network; initiating, by the SPSE, a reset to factory default settings of the device by communicating with the electric circuit via a communication channel; and sending, by the SPSE, a confirmation via the network, wherein the confirmation includes a response to the challenge as produced by the SPSE and an attestation report, the attestation report being a declaration by the SPSE that the reset to factory default settings is initiated or carried out.

Remote resetting to factory default settings; a method and a device

Systems and methods of managing a certificate associated with a component located at a remote location from a certificate authority system are provided. A certificate request is received, wherein the certificate request comprises a key associated with the component. A certificate is generated corresponding to the key received in the certificate request, and a validity status of the certificate is caused to be set to invalid. The certificate is provided to the component and it is determined whether the component matches the certificate. Upon determining that the component matches the certificate, the validity status is caused to be set to valid.

Systems and methods of managing a certificate associated with a component located at a remote location

A method for encoding a video stream for the provision of prunable video data, comprising identifying, in the video stream, a first event-generating occurrence in one or more frames of the video stream, and, in an encoder, using the event-generating occurrence to initiate a hierarchical branch extending from a base-layer when encoding the video stream.

Method for providing prunable video

A method of encoding a video stream for the provision of prunable video data, comprising: receiving, in an encoder, a video stream in which each image frame of the video stream is divided into a number of subviews, providing each subview with an assigned category based on a content of the particular subview, monitoring the evolution of category assigned for each subview, and encoding the video stream using a hierarchical P-frame encoding structure, in such manner that each change in category for a subview starts a new hierarchical P-frame structure.

A method for partially unmasking an object in a video stream comprises: displaying a first video stream in which objects are covered by privacy masks; receiving user input regarding a selection of an object being covered by a privacy mask, wherein the object has a first portion being associated with a first privacy level and a second portion being associated with a second, higher, privacy level; checking that a permission associated with the user input grants access to video data depicting object portions being associated with the first privacy level; giving access to video data depicting the first portion of the object; and displaying a second video stream which differs from the first video stream in that it includes the video data depicting the first portion of the object, while the second portion of the object is still covered by a privacy mask.

Method and device for partially unmasking an object in a video stream

Methods and apparatus, including computer program products, for controlling a Pan-Tilt-Zoom (PTZ) camera. A video stream is provided by the PTZ camera. The video stream includes a main image and a smaller picture-in-picture overlay. The main image and the overlay show the same view. The overlay has both a higher frame rate and a lower resolution compared to the main image. A movement control instruction is received, by the PTZ camera, in response to an evaluation of at least one of the main image and the overlay.

Controlling a pan-tilt-zoom camera

A video capturing device configured to capture video data, the image capturing device comprising: an image processing pipeline configured to generate a video stream from the captured video data; an encryption key activating module configured to, upon request, activate an encryption key and deactivate any previously activated encryption key used for encrypting the video stream, such that only one encryption key is activated to be used for encryption of the video stream at each instance in time; an encryption scheduler module configured to, at a predetermined time interval, instruct the encryption key activating module to activate an encryption key; an event handling module configured to, as a response to receiving indications of a detected event, instruct the encryption key activating module to activate an encryption key; an encryption module configured to encrypt the video stream using the one activated encryption key.

Growing community of inventors

Lund, Sweden

Axel Keskikangas