Video broadcasting equipment, image processing equipment, and camera

• US 20020061064A1
• Filed: 03/26/2001
• Published: 05/23/2002
• Est. Priority Date: 11/22/2000
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Ishikawa, Fumio, Kawamura, Hirobumi
• Application Number:
  US09/817,069
• Publication Number:
  US 20020061064A1
• Time in Patent Office: Days
• US Class Current: 375/240.12
• CPC Class Codes: H04N 19/00 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
• CPC Class Codes: H04N 19/17 the unit being an image region, e.g. an object
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

The invention relates to a video broadcasting equipment for downloading image information given from a camera to an image processing equipment, the image processing equipment which accomplishes centralized supervisory of image information, and the camera. The video broadcasting equipment discriminates a dynamic region of image information individually representing an image of a coverage of a camera and transmits the image information and a discrimination result of the dynamic region to the image processing equipment through a communication path. In the centralized supervisory system to which the present invention is applied, traffic on a communication path formed to the cameras does not increase, and image information to be subjected to dynamic image processing is specified according to a result of processing of discriminating the dynamic region. The discrimination processing is generally simple and its throughput is substantially small in comparison with the dynamic image processing.

Claims

1. A video broadcasting equipment comprising:

a communication interfacing section for forming a communication path to an image processing equipment which performs a dynamic image processing on image information which is given by a single or a plurality of camera(s) and individually represents images of coverages of the camera(s);

a dynamic-region discriminating section for discriminating a dynamic region of said image information individually representing the images of said coverages of said single or plurality of camera(s); and

a controlling section for transmitting said image information and a result of said discriminating to said image processing equipment through said communication path.

2. The video broadcasting equipment according to claim 1, further comprising a coding section for interframe coding said image information and generating a train of codes representing said image information, and wherein:

said dynamic-region discriminating section discriminates said dynamic region according to a difference between a prescribed threshold value and either or both of information content of said train of codes or/and a word length of codes constituting said train of codes; and

said controlling'"'"'section transmits said train of codes as image information to said image processing equipment, together with said discrimination result.

3. The video broadcasting equipment according to claim 1, further comprising a coding section for interframe coding image information including said discriminated dynamic region at a higher compression rate, compared with image information including no dynamic region, and for generating a train of codes representing said image information including said discriminated dynamic region, and wherein

said controlling section transmits said train of codes as image information to said image processing equipment, together with said discrimination result.

4. The video broadcasting equipment according to claim 1, wherein said controlling section transmits, as a discrimination result, a combination of identifiers of image information having a dynamic region discriminated by said dynamic-region discriminating section, to said image processing equipment together with said image information.

5. The video broadcasting equipment according to claim 1, wherein said controlling section transmits only image information including said discriminated dynamic region to said image processing equipment.

6. The video broadcasting equipment according to claim 4, wherein said controlling section transmits individual image information and individual discrimination results of said image information to said image processing equipment as superimposed image information.

7. The video broadcasting equipment according to claim 5, wherein said controlling section transmits individual image information and individual discrimination results of said image information to said image processing equipment as superimposed image information.

8. The video broadcasting equipment according to claim 1, wherein said controlling section transmits image information inclu ding sa id discri minated dynamic region to said image processing equipment with higher resolution, compared with image information including no dynamic region.

9. The video broadcasting equipment according to claim 1, wherein said controlling section transmits, to said image processing equipment , image information including said discriminated dynamic region at a higher transmission rate, compared with image information including no dynamic region.

10. The video broadcasting equipment according to claim 9, wherein said communication interfacing section sets a transmission rate of a communication path used for transferring image information including said discriminated dynamic region, to a higher value, compared with a communication path used for transferring image information including no dynamic region.

11. The video broadcasting equipment according to claim 1, further comprising dynamic-region extracting section for extracting partial image information including said individual discriminated dynamic regions from said image information given by said single or plurality of camera(s), and wherein

said controlling section transmits said partial image information to said image processing equipment, together with said discrimination result.

12. The video broadcasting equipment according to claim 8, wherein said controlling section transmits image information including said discriminated dynamic region to said image processing equipment at a higher compression rate, compared with image information including no dynamic region.

13. The video broadcasting equipment according to claim 1, wherein said controlling section transmits image information which is assigned through said communication path, to said image processing equipment.

14. The video broadcasting equipment according to claim 13, further comprising a storage section where an identifier of a camera which images adjacent coverage(s) of said single or plurality of camera(s) is registered in advance, and wherein

said controlling section specifies a camera, which has an identifier registered in said storage section, corresponding to a coverage of a camera designated by said image processing equipment, and transmits image information given from said specified camera to said image processing equipment.

15. The video broadcasting equipment according to claim 1, wherein said controlling section gives a notification of being assigned to a specific camera assigned through a communication path, and transmits image information given from the specific camera to said image processing equipment.

17. The image processing equipment according to claim 16, wherein said image processing section discriminates dynamic regions of image information selected by said image selecting section.

18. The image processing equipment according to claim 17, wherein said image processing section performs all or a part of:

detection of a size, a shape, and a movement pattern of an object positioned in each of said discriminated dynamic regions;

tracing of the object positioned in each of said discriminated dynamic regions;

detection of a change in image structure; and

detection of an object disappearing from the dynamic regions.

19. The image processing equipment according to claim 17, wherein said image processing section determines either or both of a speed or/and a moving direction of an object positioned in each of said discriminated dynamic regions.

20. The image processing equipment according to claim 18, wherein said image processing section determines either or both of a speed or/and a moving direction of an object positioned in each of said discriminated dynamic regions.

21. The image processing equipment according to claim 17, wherein said image processing section transmits a download request of substitute image information to said video broadcasting equipment capable of downloading the substitute image information, through said communication interfacing section and said communication path, when a dynamic region of any image information selected by said image selecting section cannot be discriminated.

22. The image processing equipment according to claim 21, wherein said image processing section transmits specific image information other than image information having no dynamic region discriminated, or an identifier representing a camera which outputs the specific image information as said download request of substitute image information.

23. The image processing equipment according to claim 21, further comprising a storage section where an identifier of a camera which images adjacent coverage(s) of said single or plurality of camera(s) is registered in advance, and wherein

said image processing section specifies a coverage where an image including no dynamic region is imaged, and requests a download of substitute image information imaged by a camera having an identifier of the specified coverage registered in said storage section, through said communication interfacing section and said communication path.

24. The image processing equipment according to claim 22, further comprising a storage section where an identifier of a camera which images adjacent coverage(s) of said single or plurality of camera(s) is registered in advance, and wherein

said image processing section specifies a coverage where an image including no dynamic region is imaged, and requests a download of substitute image information imaged by a camera having an identifier of the specified coverage registered in said storage section, through said communication interfacing section and said communication path.

25. The image processing equipment according to claim 16, further comprising man-machine interfacing section for specifying a camera from said single or plurality of camera(s) under man-machine interface, and requesting a download of said image information to the specified camera through said communication interfacing section and said communication path.

26. The image processing equipment according to claim 25, wherein said man-machine interfacing section requests the download of said image information to be performed at all or a part of resolution, compression rate, and transmission rate set under said man-machine interface.

16. An image processing equipment comprising:

a communication interfacing section for receiving image information which is given through a communication path and individually represents images of coverages of a single or a plurality of camera(s) and a discrimination result of as to whether or not the image information includes a dynamic region;

an image selecting section for selecting image information whose discrimination result is true, from the received image information; and

an image processing section for executing dynamic image processing on said selected image information.

27. A camera comprising:

an imaging section for imaging an image of a coverage and generating image information representing the image;

a coverage judging section wherein a relative position of said coverage to the coverages of other cameras is given in advance, for judging whether or not the relative position corresponds to adjacent coverages of a coverage assigned from outside; and

a controlling section for outputting said image information generated by said imaging section when a judgement result from said coverage judging section is true.