Video analysis method and system
The present invention relates to a video analysis method, including: receiving a plurality of chunks of a video streamed from a server; extracting one or more frames from each chunk; analyzing each frame in accordance with a static image analysis engine to generate a pornographic content rating for the frame; and combining the ratings of the frames from the plurality of chunks to generate a pornographic content rating for the video. A system and software for analyzing video also described.
1. A video analysis method, including:
a) requesting a plurality of chunks from different locations within a video from a server;
b) receiving the plurality of chunks from different locations within the video streamed from the server, without receiving the entire video;
c) extracting one or more objects from each chunk of the received plurality of chunks;
d) analysing each extracted object in accordance with an image analysis engine to generate a content rating for the object; and
e) combining the ratings of the objects from the plurality of chunks to generate a content rating for the video;
wherein the plurality of chunks received are non-contiguous.
2. A method as claimed in claim 1 , wherein the locations for the chunks within the video are determined based, at least, upon the size of the video and the frame rate of the video.
3. A method as claimed in claim 1 , wherein the locations for the chunks are separated by a predefined interval.
4. A method as claimed in claim 1 , wherein the size of the chunks are determined based, at least, upon the size and length of the video.
5. A method as claimed in claim 1 , further including the step of generating an action if the rating for the video exceeds a predefined threshold.
6. A method as claimed in claim 1 , wherein metadata relating to the video is extracted from header information for the video.
7. A method as claimed in claim 1 , wherein the objects are extracted from each chunk using a video decoder.
8. A method as claimed in claim 1 , wherein the video analysis method is performed simultaneously with transmission of the video to a video client.
9. A method as claimed in claim 8 , wherein the transmission of the video to the video client is throttled whilst the video analysis method is analysing the video.
10. A method as claimed in claim 1 , further including the step of receiving a request to analyse the video from a video transmission system; wherein the rating is generated for the video in response to the request from the video transmission system.
11. A method as claimed in claim 10 , wherein the request comes via a database.
12. A method as claimed in claim 1 , further including: receiving a request from a client device to analyse the video; and transmitting the content rating for the video to the client device in response to the request.
13. A method as claimed in claim 12 , wherein a module at the client device identifies a request for streaming the video, transmits the request to analyse the video, and determines whether the video is played or not based upon the content rating.
14. A method as claimed in claim 13 , wherein the module is a plug-in to a browser executing on the client device.
15. A system for analysing videos, comprising:
a communications apparatus configured to, responsive to a request by a client device or a browser for a video from a server, receive a plurality of chunks from different locations within the video streamed from the server, without receiving the entire video, wherein the plurality of received chunks are non-contiguous; and
a processor configured to request the plurality of chunks from different locations within the video streamed from the server; to extract one or more objects from each chunk of the plurality of received chunks; to analyse each extracted object in accordance with an image analysis engine to generate a content rating for the object; and to combine the ratings of the objects from the plurality of chunks to generate a rating for the video.
16. A system as claimed in claim 15 , further including a video transmission system configured to request analysis of the video from the processor, and to control transmission of the video to a client based upon the content rating.
17. A system as claimed in claim 16 , further including a client device configured to receive the video streamed from the server via the video transmission system.
18. A system as claimed in claim 15 , further including a client device configured to request analysis of the video from the processor, and to control playback of the video based upon the content rating.
19. A system as claimed in claim 18 , wherein the client device includes a module for requesting analysis of the video from the processor, and for controlling playback of the video based upon the content rating.
20. A client device for use with the system of claim 17 .
21. A non-transitory storage medium having stored therein an application program interface configured for providing access to the system of claim 15 .
22. A non-transitory storage medium having stored therein a software module for use with the system of claim 19 .
23. A non-transitory storage medium having stored therein a computer program, when executed causing a processing system to perform the method of claim 1 .
24. An apparatus configured for performing the method of claim 1 .