US 12,114,022 B2
Identification of decreased object detectability for a video stream
Volodya Grancharov, Solna (SE); and Manish Sonal, Sollentuna (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/285,509
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Oct. 17, 2018, PCT No. PCT/EP2018/078362
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/078543, PCT Pub. Date Apr. 23, 2020.
Prior Publication US 2021/0383117 A1, Dec. 9, 2021
Int. Cl. G06T 7/136 (2017.01); G06F 18/21 (2023.01); G06F 18/22 (2023.01); G06V 10/44 (2022.01); G06V 10/54 (2022.01); G06V 10/56 (2022.01); G06V 10/764 (2022.01); G06V 10/82 (2022.01); G06V 10/98 (2022.01); G06V 20/20 (2022.01); G06V 20/40 (2022.01); G06V 20/56 (2022.01); H04N 19/89 (2014.01)
CPC H04N 19/89 (2014.11) [G06F 18/2193 (2023.01); G06F 18/22 (2023.01); G06T 7/136 (2017.01); G06V 10/454 (2022.01); G06V 10/54 (2022.01); G06V 10/56 (2022.01); G06V 10/764 (2022.01); G06V 10/82 (2022.01); G06V 10/993 (2022.01); G06V 20/20 (2022.01); G06V 20/40 (2022.01); G06V 20/56 (2022.01); G06T 2207/10016 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for identifying decreasing object detectability for a video stream, the method being performed by a controller, the method comprising:
receiving the video stream over a communication channel;
receiving first visual object detection, VOD, data of the video stream, wherein the first VOD data has been obtained from the video stream before being sent over the communication channel towards the controller, wherein the first VOD data includes a first detection probability value;
obtaining second VOD data of the video stream, wherein the second VOD data is obtained from the video stream after being received by the controller, wherein the controller receives a subset of all first VOD data obtained from the video stream before being sent over the communication channel, wherein the subset is selected based on a bandwidth limitation of the communication channel, wherein the second VOD data includes a second detection probability value;
determining, by comparing the first VOD data to the second VOD data, whether at least one object present in the first VOD data has a decreased object detectability in the second VOD data, thereby identifying the decreasing object detectability for the video stream, wherein comparing the first VOD data to the second VOD data includes utilizing one or more of the first detection probability value and the second detection probability value to determine a detectability level for the at least one object and wherein the identifying the decreasing object detectability includes determining that the detectability level is below a detectability threshold value; and
issuing a notification when the decreasing object detectability has been identified.