Abstract: A method of encapsulating image data in a media file, the image data being related to a main image to be generated based on a plurality of sub-images, wherein the method comprises: obtaining the plurality of sub-images, each sub-image being provided in at least one version; generating descriptive metadata for describing the main image and the plurality of sub-images; encapsulating the plurality of sub-images and the descriptive metadata in the media file; wherein the method further comprises: generating a progressive information defining a set of consecutive progressive steps for generating a version of the main image, each progressive step being associated with a set of sub-images versions required to generate the version of the main image; and embedding the progressive information in the descriptive metadata.

Abstract: The present invention concerns a method of encapsulating one or more uncompressed images in a media file, wherein the method comprises: generating generic description information describing the images and indicating that the images are uncompressed; and encapsulating the generic description information and the one or more images in the media file, the uncompressed images being encapsulated as one or more image items, the generic description information being encapsulated in a metadata part of the media file describing the image items.

Abstract: According to some embodiments of the disclosure, it is provided a method of communication in an intelligent transport system, ITS. After having perceived an object within an area monitored by the ITS-S, at a first given time, an estimation of a state of the object is obtained at a second given time, if the object is no longer perceived by the ITS-S at the second given time and a Collective Perception Message, CPM, comprising items of information related to the estimated state of the object is transmitted.

Abstract: According to some embodiments of the disclosure, it is provided a method of communication in an intelligent transport system, ITS, comprising at an ITS test station, sending to an ITS station, ITS-S, under test, SUT, different from the ITS test station, a request to report perception of objects within an area deemed to be monitored by the SUT, the request comprising items of information characterizing objects that perception is to be reported. In response to the request, an ITS message generated by the SUT is received, the ITS message comprising information directed to perception of objects as requested. Based on the received ITS message, it may be determined whether the SUT is misbehaving.

Abstract: According to some embodiments of the disclosure, it is provided a method of communication in an intelligent transport system, ITS, comprising, at an originating ITS station, ITS-S, monitoring an area, transmitting a Collective Perception Message, CPM, comprising predicted data representing a predicted behavior of an object perceived by the originating ITS-S within the monitored area, the CPM further comprising an item of information characterizing the predicted behavior with regard to at least one element of the monitored area.

Abstract: According to some embodiments of the disclosure, it is provided a method of communication in an intelligent transport system, ITS, comprising at an ITS station, ITS-S, receiving a request to perform a perception measurement, the received request comprising a reference to at least one target object located in an area monitored by the ITS-S. In response, after having carried out a measurement of one or more attributes of the at least one referenced target object, an ITS message including items of information characterizing the one or more measured attributes of the at least one referenced target object is transmitted.

Abstract: The present invention concerns a method of generating a media file, the method comprising: generating a first track of media data samples; generating a region track associated with the first track, each sample of the region track comprising a region description data structure comprising geometry information of one or more regions in at least one corresponding sample of the first track; wherein the region description data structure comprises a region identifier associated with each region; and the method further comprise: generating a region annotation in a container; generating association metadata associating a region identifier with the region annotation; generating a media file including the first track, the region track, the region annotation, and the association metadata.

Abstract: According to embodiments, the invention provides a method for transmitting encapsulated media data from a server to a client, the media data being requested by the client, the method being carried out by the server and comprising: —identifying at least one byte-range of the encapsulated media data to be transmitted, the at least one byte-range representing a portion of the encapsulated media data; —obtaining a processing level of the at least one identified byte-range, the processing level being indicative of the role of data contained in the at least one identified byte-range for processing the encapsulated media data; and—sending the at least one identified byte-range and an item of information determined as a function of the obtained processing level to the client.

Abstract: A method of encapsulating entities in a file, wherein the method comprises for at least one entity: generating a grouping data structure associated with at least one of the entities, and indicating that the at least one of the entities belong to a same group; encapsulating the grouping data structure and the entities in the file; wherein the grouping data structure is a proprietary grouping data structure comprising an universally unique identifier identifying the type of the proprietary grouping.

Abstract: The present invention concerns a method of generating a media file, the method comprising: generating a first track of media data samples; generating at least one annotated region, the annotated region being associated with a geometry of the annotated region, the annotated region being associated with at least one region annotation describing the annotated region; wherein the annotated region is associated with the first track of media data samples; and generating a media file including the first track and the at least one annotated region, associated geometry and associated region annotation.

Abstract: A method of encapsulating entities in a file, wherein the method comprises for at least one entity: generating a grouping data structure associated with at least one of the entities, and indicating that the at least one of the entities belong to a same group; encapsulating the grouping data structure and the entities in the file; wherein the grouping data structure is a proprietary grouping data structure comprising an universally unique identifier identifying the type of the proprietary grouping.

Abstract: The present invention regards Cooperative Intelligent Transportation Systems, C-ITS. In response to detecting at least one situation involving at least one object detected within an area monitored by the ITS, a Collective Perception Message, CPM, is generated and transmitted. The CPM comprises a reference to the at least one object and an indication to indicate that the at least one object is involved in the at least one situation.

Abstract: A communication method for an Intelligent Transport System (ITS) comprising at least one first transmitting ITS station, the method taking place at the first transmitting ITS station including transmitting a second Collective Perception Message (CPM) comprising at least one identifier of a first element previously transmitted in a first CPM, the first element being not present in the second CPM.

Abstract: A method of communication in an Intelligent Transport System, ITS, comprising, at an originating ITS station reporting in a collective perception message an element describing a space representing a specific area of a road topology.

Abstract: A method of encapsulating image items in a file, the method comprising for an image item: generating an item portion annotation data structure related to a portion of the image item, the item portion annotation data structure being associated with the image item; generating a geometry data structure describing the geometry of the portion of the image item associated with the item portion annotation data structure; generating at least one annotation data structure associated with the item portion annotation data structure; and embedding the image item, the item portion annotation data structure, the geometry data structure and the at least one annotation data structure in the file.

Abstract: According to some embodiments, there is provided a Collective Perception Message, CPM, characterizing a plurality of Vulnerable Road Users based on a plurality of received VAMs, thereby allowing an ITS station to efficiently aggregate VAM messages from VRUs and retransmit information about the VRUs to other ITS stations. Consequently, the security is improved as some ITS stations may not be able to detect or identify VRU stations by themselves but thanks to the CPM, these stations can still be informed of the VRUs. According to other aspects, congestion is avoided while maintaining safety vis-à-vis VRUs thanks to the use of a different transmission scheme when the VRU is already characterized in a CPM sent to the ITS stations. Also, a receiving station can evaluate whether the content of a CPM can be trusted or not. Safety is thus improved. This is achieved thanks to the CPM that references a certificate.

Abstract: A Cooperative Intelligent Transportation Systems, C-ITS. A single DENM, i.e. a warning message announcing a detected event such as an accident/collision or a risk of collision or a pre-crash situation, conveys information about multiple objects involved in the detected situation, in particular about the critical objects involved in the collision. The originating ITS station, ITS-S, quickly builds the DENM because containers describing the objects it perceives are already built in a so-called Local Dynamic Map or Environment Model. On the other side, the receiving ITS-S involved in the detected event obtains more information from the single DENM, compared to known technics (CAMs or CPMs). It can then perform a quicker analysis of the situation and then decide earlier to activate or not anti-collision or pre-crash functions.

Abstract: According to some embodiments, there is provided a Collective Perception Message, CPM, characterizing a plurality of Vulnerable Road Users based on a plurality of received VAMs, thereby allowing an ITS station to efficiently aggregate VAM messages from VRUs and retransmit information about the VRUs to other ITS stations. Consequently, the security is improved as some ITS stations may not be able to detect or identify VRU stations by themselves but thanks to the CPM, these stations can still be informed of the VRUs. According to other aspects, congestion is avoided while maintaining safety vis-à-vis VRUs thanks to the use of a different transmission scheme when the VRU is already characterized in a CPM sent to the ITS stations. Also, a receiving station can evaluate whether the content of a CPM can be trusted or not. Safety is thus improved. This is achieved thanks to the CPM that references a certificate.

Abstract: A method for encapsulating media data into an ISO Base Media File Format (ISOBMFF) standard compliant file, the media data comprising a sequence of samples, including obtaining at least one sample of the sequence, generating ISOBMFF structure data indexing the at least one obtained sample, compressing the at least one obtained sample, and embedding the generated ISOBMFF structure data and the compressed at least one sample within the ISOBMFF compliant file.

Abstract: The present invention concerns a method of encapsulating subpicture bitstreams in at least one media file, the subpicture bitstreams corresponding to encoded media data of a subpicture corresponding to a rectangular region of video data, the method comprising: obtaining the plurality of subpicture bitstreams; encapsulating each subpicture bitstream in a subpicture track; generating at least one base track referencing at least two subpicture tracks and forming a spatial arrangement of the at least two subpicture tracks; generating information describing APS referenced by samples of the at least two subpicture tracks; encapsulating the subpicture tracks, the at least one base track and the information describing APS in the at least one media file.