# US 2014/0152817 A1 · Method of operating host apparatus in surveillance system and surveillance system employing the method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152817 A1 - Document ID: US20140152817A1 - Status: Published application - Kind: A1 - Application number: 13/920,173 - Filed: 2013-06-18 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Samsung Techwin Co., Ltd. - Applicants: Samsung Techwin Co., Ltd. - Inventors: Hwal-Suk LEE; Soon-Min BAE - Web page: https://patentgrep.com/patent/US20140152817A1 ## CPC - H04N 7/18: Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast - G08B 13/19645: {Multiple cameras, each having view on one of a plurality of scenes, e.g. multiple cameras for multi-room surveillance or for tracking an object by view hand-over} - G08B 13/19671: {Addition of non-video data, i.e. metadata, to video stream} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract A method of operating a host apparatus connected to at least one camera in a surveillance system, the method includes: generating metadata by analyzing an image captured by the camera; and obtaining an actual-occurrence probability of a set event according to the metadata. ## Claims ### Claim 1 A method of operating a host apparatus connected to at least one camera in a surveillance system, the method comprising: generating metadata of an image by analyzing the image captured by the camera; and obtaining an actual-occurrence probability of a set event according to the metadata. ### Claim 2 (depends on 1) The method of claim 1, wherein the metadata comprises first data and second data, and wherein the method further comprises: determining whether it is necessary to obtain an actual-occurrence probability of a set event according to the first data; and if it is determined that it is necessary to obtain the actual-occurrence probability, obtaining the actual-occurrence probability after generating the second data necessary for obtaining the actual-occurrence probability. ### Claim 3 (depends on 2) The method of claim 2, wherein the second data is not generated unless it is determined that it is necessary to obtain the actual-occurrence probability. ### Claim 4 A surveillance system comprising a host apparatus connected to at least one camera, wherein the host apparatus comprises: an image analyzing unit configured to generate metadata of an image by analyzing the image captured by the camera; and an event/reliability analyzing unit configured to obtain an actual-occurrence probability of a set event according to the metadata. ### Claim 5 (depends on 4) The surveillance system of claim 4, wherein the set event is that an object appears in a background region, wherein the image analyzing unit is configured to extract a foreground region generated in a background region, perform first filtering of the object on the extracted foreground region, and provide the event/reliability analyzing unit with a score according to a result of the first filtering as the metadata. ### Claim 6 (depends on 5) The surveillance system of claim 5, wherein the image analyzing unit is configured to provide the event/reliability analyzing unit with a summed score of a first score according to a result of whole filtering of the object performed on the extracted foreground region and a second score according to a result of partial filtering of the object performed on the extracted foreground region as the metadata. ### Claim 7 (depends on 6) The surveillance system of claim 6, wherein the event/reliability analyzing unit is configured to obtain the actual-occurrence probability by using a function of the actual-occurrence probability with respect to the summed score, and, in a case where the actual-occurrence probability exceeds a reference value, notify a user about content of the set event that the object has appeared in the background region and the actual-occurrence probability. ### Claim 8 (depends on 4) The surveillance system of claim 4, wherein the set event is that an object has appeared in a surveillance region, wherein the image analyzing unit is configured to provide the event/reliability analyzing unit with information about an attribute of the object that has appeared and information about a coordinate of the object with respect to the surveillance region. ### Claim 9 (depends on 4) The surveillance system of claim 4, wherein the event/reliability analyzing unit is configured to obtain the actual-occurrence probability based on attribute information and coordinate information about the object provided from the image analyzing unit. ### Claim 10 A surveillance system comprising a host apparatus connected to at least one camera, wherein the host apparatus comprises: an image analyzing unit configured to generate metadata comprising first and second data of an image by analyzing the image captured by the camera; and an event/reliability analyzing unit configured to determine whether it is necessary to obtain an actual-occurrence probability of a set event according to the first data, and if it is determined that it is necessary to obtain the actual-occurrence probability, request the second data necessary for obtaining the actual-occurrence probability from the image analyzing unit. ### Claim 11 (depends on 10) The surveillance system of claim 10, wherein the image analyzing unit is not configured to generate the second data unless it is determined that it is necessary to obtain the actual-occurrence probability. ### Claim 12 (depends on 10) The surveillance system of claim 10, wherein the first data comprises metadata of a higher layer and the second data comprises metadata of a lower layer. ### Claim 13 (depends on 10) The surveillance system of claim 10, wherein the image analyzing unit is configured to initially provide the event/reliability analyzing unit with only the first data comprising metadata of a higher layer, and wherein the event/reliability analyzing unit is configured to determine whether a set event has occurred according to the first data provided by the image analyzing unit, and if it is determined that the set event has occurred, request the second data comprising metadata of a lower layer from the image analyzing unit, receive the second data, and obtain an actual-occurrence probability of the set event according to the first data and the second data. ### Claim 14 (depends on 13) The surveillance system of claim 13, wherein the image analyzing unit is not configured to generate the second data unless it is determined that the set event has occurred. ### Claim 15 (depends on 13) The surveillance system of claim 13, wherein the set event is that an object appears in a background region, wherein the image analyzing unit is configured to extract a foreground region generated in a background region and provide the event/reliability analyzing unit with a first score according to a result of first filtering of the object performed on the extracted foreground region as the first data, and wherein the event/reliability analyzing unit is configured to determine whether the object has appeared according to the first score provided by the image analyzing unit, and, if it is determined that the object has appeared, provide the event/reliability analyzing unit with a second score according to a result of second filtering of the object performed on the extracted foreground region as the second data. ### Claim 16 (depends on 15) The surveillance system of claim 15, wherein the event/reliability analyzing unit is configured to obtain the actual-occurrence probability of the set event according to the first and second scores, and, in a case where the actual-occurrence probability exceeds a reference value, notify a user about content of the set event that the object has appeared in the background region and the actual-occurrence probability. ### Claim 17 (depends on 10) The surveillance system of claim 10, wherein the metadata comprises the first data used for detecting an occurrence of a first event and the second data used for detecting an occurrence of a second event after the first event has occurred. ### Claim 18 (depends on 17) The surveillance system of claim 17, wherein the image analyzing unit is configured to initially provide the event/reliability analyzing unit with only the first data, and wherein the event/reliability analyzing unit is configured to determine whether a first event has occurred according to the first data provided by the image analyzing unit, and if it is determined that the first event has occurred, provide the image analyzing unit with the first data, and requests the second data from the image analyzing unit. ### Claim 19 (depends on 18) The surveillance system of claim 18, wherein the event/reliability analyzing unit is configured to obtain the actual-occurrence probability of a second event according to the second data provided by the image analyzing unit, and, in a case where an actual-occurrence probability of the second event exceeds a reference value, notify the user about content of the second event that has occurred and the actual-occurrence probability. ### Claim 20 (depends on 19) The surveillance system of claim 19, wherein the first event is that an object appears in a surveillance region, and wherein the second event is that the object that appears is not allowed to be placed in the target region, wherein the first data comprises information about an attribute of the object that appears in the surveillance region and information about a coordinate of the object with respect to the surveillance region, and wherein the second data comprises classification information about the object that appears.