JP2009282805A - Image change detection apparatus, image change detection method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image change detection apparatus detecting even changes in other than overall video. <P>SOLUTION: The image change detection apparatus is provided with: a video receiving unit 11 for receiving a video of a plurality of areas; an accumulation unit 12 for accumulating videos received by the video receiving unit 11; a change detection unit 13 for detecting changes in images for each of the plurality of areas in each of the videos accumulated in the accumulation unit 12; and an output unit 15 for outputting change information, i.e., information about changes in the areas where the change detection unit 13 has detected changes in the images. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an image change detection device that detects a change related to a moving image.

2. Description of the Related Art Conventionally, a technique for detecting a change in an image and a motion of a moving object by image processing has been developed (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 9-50525

  However, in the conventional image processing, it has only been possible to detect changes in the entire moving image.

  The present invention has been made to solve the above-described problem, and an object thereof is to provide an image change detection device and the like that can detect changes other than the entire moving image.

  In order to achieve the above object, an image change detection apparatus according to the present invention includes a moving image receiving unit that receives moving images obtained by photographing a plurality of areas, a storage unit that stores moving images received by the moving image receiving unit, For each region in the plurality of regions of the moving image accumulated by the accumulation unit, a change detection unit that detects a change in the image, and change information that is information regarding the change in the region in which the change detection unit has detected a change in the image. And an output unit for outputting.

  With such a configuration, a change in image can be detected for each of a plurality of regions of a moving image. Then, by outputting the change information regarding the change, for example, it is possible to notify a related person that the change has occurred.

  In the image change detection device according to the present invention, the output unit may perform different outputs for each region in which the change detection unit detects a change in the image.

  With such a configuration, for example, for each region where the change detection unit detects a change in the image, change information can be output to a person corresponding to the region.

  In the image change detection apparatus according to the present invention, transmission destination correspondence information that is information for associating region specifying information that is information for specifying a region with transmission destination information that is information indicating a transmission destination of the information is stored. A destination correspondence information storage unit, wherein the output unit uses the destination information associated with the region identification information for identifying the region in which the change detection unit has detected a change in the image by the destination correspondence information. The change information may be transmitted.

  With such a configuration, the change information can be transmitted to the transmission destination corresponding to the area in which the change detection unit has detected the change in the image. It can be notified that it has occurred.

  Further, in the image change detection device according to the present invention, storage destination correspondence information that is information for associating region specifying information that is information for specifying a region with storage destination information that is information indicating the storage destination of the information is stored. A correspondence information storage unit; and a change information storage unit in which the change information is stored. The output unit stores the accumulation in region specifying information for specifying a region in which the change detection unit has detected a change in an image. The change information may be stored in the change information storage unit using storage destination information associated with the destination correspondence information.

  With such a configuration, the change information can be accumulated in the accumulation destination corresponding to the area where the change detection unit has detected the change in the image.

  In the image change detection device according to the present invention, a transmission instruction information receiving unit that receives transmission instruction information that is information for instructing transmission of change information stored in the change information storage unit, and the transmission instruction information receiving unit May further include a change information transmitting unit that reads out and transmits change information corresponding to the transmission instruction information received from the change information storage unit.

  With such a configuration, change information can be received by transmitting transmission instruction information. Therefore, the person corresponding to each region can acquire change information by operating the terminal device and transmitting the transmission instruction information to the image change detection device, for example, that the change has occurred in the region, It will be possible to know the contents of the change that has occurred in the area.

In the image change detection device according to the present invention, the change information may be information indicating that an image change is detected.
With such a configuration, it can be notified that a change in the image is detected by the change information.

In the image change detection apparatus according to the present invention, the change information may be an image of a region where a change in the image is detected.
With such a configuration, it is possible to notify the image of the area where the change is detected by the change information.

In the image change detection device according to the present invention, the change information may be information related to the content of the image change.
With such a configuration, it is possible to inform the contents of the detected change by the change information.

  According to the image change detection device and the like according to the present invention, it is possible to detect a change for each of a plurality of regions in a moving image and to output information related to the change.

  Hereinafter, an image change detection device according to the present invention will be described using embodiments. In the following embodiments, components and steps denoted by the same reference numerals are the same or equivalent, and repetitive description may be omitted.

(Embodiment 1)
An image change detection apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings. The image change detection apparatus according to the present embodiment detects a change for each of a plurality of regions in a moving image.

  FIG. 1 is a block diagram showing a configuration of an image change detection apparatus 1 according to the present embodiment. The image change detection device 1 according to the present embodiment includes a moving image reception unit 11, a storage unit 12, a change detection unit 13, a transmission destination correspondence information storage unit 14, and an output unit 15.

  The moving image reception unit 11 receives a moving image. The moving image may be taken by one camera, or may be a set of moving images taken by two or more cameras. In the latter case, one moving image may be constituted by a set of a plurality of moving images (for example, baseball by combining four moving images in which each part of the baseball field is photographed by four cameras). For example, when a single moving image of the entire field is configured), or not.

  The moving image received by the moving image receiving unit 11 is obtained by photographing a plurality of areas. It is assumed that the area is set in advance. For example, a field used in sports such as a baseball field, a soccer field, and a tennis court may be divided into a plurality of areas in advance. If the area delimiter is known as a result, the information indicating the area delimiter does not matter. The information indicating the division of the area may or may not be included in the moving image received by the moving image receiving unit 11. In the former case, for example, information indicating the boundary of the region is obtained by locating a boundary line of the region or a marker indicating the boundary point of the region in a field such as a baseball field and shooting the marker with a camera. May be included in the moving image. In this case, it can be seen that a region delimiter is detected by detecting a marker or the like included in the moving image. In the latter case, for example, information for delimiting the area is stored in a recording medium (not shown), and the delimitation of each area in the moving image received by the moving image receiving unit 11 is performed using the information for delimiting the area. You may come to understand. The information for dividing the area in this case may be, for example, a coordinate value indicating the boundary line of the area or the boundary point of the area (in this case, the pixel of the moving image is associated with the coordinate value). It may be information indicating that the reference point is divided into four areas of a predetermined length (in this case, the position corresponding to the reference point in the moving image can be specified). Other information may be used. Note that the division of the area may not be strict. That is, there may be overlap between a certain region and a region adjacent to the region. For example, when a reference point is provided for each intersection of square grids with an interval of 1 meter, and a circle with a radius of 0.75 meters from each reference point becomes each region, overlap between adjacent regions Will exist.

  The frame rate of the moving image received by the moving image receiving unit 11 does not matter. For example, it may be 30 frames / second, 60 frames / second, or 1 frame / second or 0.5 frame / second depending on accuracy.

  For example, the moving image receiving unit 11 may receive a moving image input from an input device (for example, a camera that captures a moving image), and receives a moving image transmitted via a wired or wireless communication line. Alternatively, a moving image read from a predetermined recording medium (for example, an optical disk, a magnetic disk, a semiconductor memory, etc.) may be received. The moving image receiving unit 11 may or may not include a device (for example, a modem or a network card) for receiving. The moving image receiving unit 11 may be realized by hardware, or may be realized by software such as a driver that drives a predetermined device.

  The accumulation unit 12 accumulates the moving image received by the moving image reception unit 11 in a recording medium. The recording medium is, for example, a semiconductor memory, an optical disk, a magnetic disk, or the like, and may be included in the storage unit 12 or may exist outside the storage unit 12. Further, this recording medium may or may not temporarily store a moving image. For example, the storage unit 12 may or may not store the moving image in association with the time code corresponding to each frame constituting the moving image. The time code may be received by the moving image receiving unit 11 or may be given to the moving image by the storage unit 12 or other components.

  The change detection unit 13 detects a change in the image for each region in the plurality of regions of the moving image accumulated by the accumulation unit 12. As a result of the change detection by the change detection unit 13, it can be seen that there is a change for each of a plurality of regions. When the change detection unit 13 detects a change in a certain area, the change detection unit 13 may detect a change between the area in the image (frame image) that is a detection target of the change and the same area in the reference image. . Here, the reference image may be, for example, an image in a steady state where there is no moving object (for example, an image of a field in which a player, a referee, a bat, a ball, or the like is not present in a field such as a baseball field). It may be an image immediately before an image to be detected or an image preceding a predetermined frame. The method for detecting a change may be, for example, a method for detecting a change when there is a difference between an image to be detected for change and a reference image, or another method for detecting a moving object may be used. . In addition, the change detection unit 13 calculates, for example, the similarity between the image whose change is to be detected and the reference image, and determines that a change has occurred when the similarity is lower than a threshold value. May be. A method for detecting a change in a moving image is already known and will not be described in detail.

  It should be noted that the change detection unit 13 “detects a change in the image for each of the plurality of regions” as a result, and the process for detecting the change need not necessarily be performed for each region. For example, a range that changes in the entire moving image may be specified, and each region included in the specified range may be specified. In that case, a change has been detected for each identified region.

  In addition, when the change detection unit 13 detects a change between an image to be detected for change and a reference image, a change in brightness caused by sunlight or a positional deviation caused by camera vibration or the like. Such a noise may be appropriately removed to detect a change between both images. Such a technique is already known and will not be described in detail.

  The transmission destination correspondence information storage unit 14 stores transmission destination correspondence information. The transmission destination correspondence information is information that associates region specifying information that is information for specifying a region with transmission destination information that is information indicating a transmission destination of the information. Here, “associating region specifying information and destination information” means that it is only necessary to acquire destination information from the region specifying information. Therefore, the transmission destination correspondence information may include information including the area specifying information and the transmission destination information as a set, or may be information for linking the area specifying information and the transmission destination information. In the latter case, the transmission destination correspondence information may be, for example, information that associates the area specifying information with a pointer or address indicating the position where the transmission destination information is stored. In the present embodiment, the former case will be described. Further, the area specifying information and the transmission destination information may not be directly associated with each other. For example, the third information may correspond to the area specifying information, and the destination information may correspond to the third information. The same applies when other two or more pieces of information are associated.

  The process of storing the destination correspondence information in the destination correspondence information storage unit 14 does not matter. For example, the transmission destination correspondence information may be stored in the transmission destination correspondence information storage unit 14 via a recording medium, and the transmission destination correspondence information transmitted via a communication line or the like is stored in the transmission destination correspondence information storage unit. 14 may be stored, or the transmission destination correspondence information input via the input device may be stored in the transmission destination correspondence information storage unit 14. The storage in the transmission destination correspondence information storage unit 14 may be temporary storage in a RAM or the like, or may be long-term storage. The transmission destination correspondence information storage unit 14 can be realized by a predetermined recording medium (for example, a semiconductor memory, a magnetic disk, an optical disk, etc.).

  The output unit 15 outputs change information that is information related to the change of the region in which the change detection unit 13 has detected a change in the image. The output unit 15 may or may not perform a different output for each region in which the change detection unit 13 has detected a change in the image. “A different output for each region in which the change detection unit 13 has detected a change in the image” means that, for example, output to a different output destination in each region in which the change detection unit 13 has detected a change in the image. The output may be performed in different output forms (for example, transmission, storage, display, printing, audio output, etc. may be used as output forms) for each region in which the change detection unit 13 detects a change in the image. It may be. In the former case, for example, the output unit 15 may transmit the change information to a different transmission destination for each region, may store the change information in a different storage destination for each region, and may display different information for each region. The change information may be displayed first. In the latter case, the output unit 15 may switch output forms such as transmission, accumulation, and display for each region. In the present embodiment, a case will be described in which the output unit 15 transmits change information to different transmission destinations for each region. In other words, the output unit 15 uses the transmission destination information associated with the area specifying information for specifying the area in which the change detecting unit 13 has detected the change in the image by the transmission destination correspondence information, and transmits the transmission indicated by the transmission destination information. It is assumed that the change information is transmitted first.

  The change information may be, for example, information indicating that a change in the image has been detected, or an image of an area in which a change in the image has been detected (this image may be a still image or a moving image). Alternatively, it may be information related to the content of the image change (for example, information indicating that the player has entered the area, information indicating that the ball has entered the area, etc.). When the change information is information indicating that a change in the image has been detected, the change information is stored in advance in a recording medium (not shown), and the output unit 15 reads and outputs the change information. Also good. When the change information is an image of an area where a change in the image is detected, the output unit 15 may read and output the image from the recording medium on which the storage unit 12 has stored the moving image. At that time, the image at the time when the change is detected may be read using a time code or the like, or may not be read (for example, when reading the image as change information immediately after the change is detected). Since the time lag is not likely to occur, the latest image may be read at the time of reading). When the change information is information related to the content of the image change, the output unit 15 may configure and output the change information using the moving image or the like stored by the storage unit 12. A method for configuring change information, which is information relating to the content of image changes, will be briefly described. For example, the output unit 15 holds information for associating an image pattern with change information regarding the content of the image change corresponding to the image pattern on a recording medium (not shown), and It may be determined whether or not there is a location that matches the pattern of the held image for the region, and if it exists, change information corresponding to the pattern of the image may be output. For example, the pattern of the image of the ball may be held in association with the change information “Ball entered”. If there is a location that matches the image pattern of the ball in the image area where the change is detected, the output unit 15 changes the change information corresponding to the image pattern of the ball “the ball has entered. May be output. The determination of the match with the image pattern may be, for example, a complete match determination, and a determination as to whether or not the similarity is equal to or greater than a threshold (if the similarity is equal to or greater than the threshold, Judgment). Further, the change information may be other information as long as the information is output due to detection of a change in the image by the change detection unit 13.

  Here, the output may be, for example, display on a display device (for example, a CRT or a liquid crystal display), transmission via a communication line to a predetermined device, printing by a printer, or audio output by a speaker. Alternatively, it may be stored in a recording medium or delivered to another component. In this embodiment, as described above, a case where change information is transmitted will be described. The output unit 15 may or may not include an output device (for example, a display device or a printer). The output unit 15 may be realized by hardware, or may be realized by software such as a driver that drives these devices.

  Note that the recording medium in which the storage unit 12 stores moving images and the transmission destination correspondence information storage unit 14 may be realized by the same recording medium, or may be realized by separate recording media. In the former case, the area storing the moving image is a recording medium in which the storage unit 12 stores the moving image, and the area storing the transmission destination correspondence information is the transmission destination correspondence information storage unit 14.

  Next, the operation of the image change detection apparatus 1 according to the present embodiment will be described using the flowchart of FIG.

  (Step S101) The moving image receiving unit 11 determines whether a moving image has been received. If accepted, the process proceeds to step S102; otherwise, the process proceeds to step S103. In addition, when the moving image reception part 11 receives the still image which comprises a moving image in order, the moving image reception part 11 may judge whether the still image was received in step S101.

  (Step S102) The storage unit 12 stores the moving image received by the moving image receiving unit 11 in a recording medium. Then, the process returns to step S101.

  (Step S103) The change detection unit 13 determines whether to detect a change in the image. And when it detects, it progresses to step S104, and when that is not right, it returns to step S101. For example, the change detection unit 13 may determine that an image change is detected every predetermined period (for example, every 1 second, every 5 seconds, etc.), and a predetermined event (for example, a new moving image is accepted). It may be determined that a change in the image is detected by using a trigger to detect the change in the image or an instruction to detect the change in the image from the outside.

  (Step S104) The change detection unit 13 detects a change in the image for each of a plurality of regions. Details of this processing will be described later with reference to the flowchart of FIG.

  (Step S105) The output unit 15 determines whether there is a region where a change is detected. If there is an area where a change is detected, the process proceeds to step S106, and if not, the process returns to step S101.

  (Step S106) The output unit 15 outputs change information for each region where a change is detected. Details of this processing in the present embodiment will be described later with reference to the flowchart of FIG. Then, the process returns to step S101.

  In the flowchart of FIG. 2, the process is terminated by powering off or a process termination interrupt.

  FIG. 3 is a flowchart showing details of the process of detecting changes in each area (the process of step S104) in the flowchart of FIG.

  (Step S201) The change detection unit 13 sets the counter i to 1.

  (Step S202) The change detection unit 13 determines whether there is a change in the i-th region in the moving image. Note that the change detection unit 13 can know the position of the i-th region in the moving image using, for example, information indicating the separation of the regions. If there is a change, that is, if a change is detected, the process proceeds to step S203, and if not, the process proceeds to step S204.

  (Step S203) The change detection unit 13 temporarily stores area specifying information corresponding to the i-th area in a recording medium (not shown).

  (Step S204) The change detection unit 13 increments the counter i by 1.

  (Step S205) The change detection unit 13 determines whether or not the i-th region exists in a plurality of regions of the moving image. And when it exists, it returns to step S202, and when that is not right, it returns to the flowchart of FIG.

  FIG. 4 is a flowchart showing details of the change information output processing (step S106) in the flowchart of FIG.

  (Step S301) The output unit 15 sets the counter i to 1.

  (Step S302) The output unit 15 stores, in the transmission destination correspondence information storage unit 14, the transmission destination information corresponding to the i-th region identification information among the region identification information for identifying the region where the change is detected. Acquired by referring to the destination correspondence information.

  (Step S303) The output unit 15 configures change information related to the area specified by the i-th area specifying information. The configuration of the change information may be, for example, generating change information or reading the change information from the recording medium.

  (Step S304) The output unit 15 transmits the change information configured in Step S303 to the transmission destination indicated by the transmission destination information acquired in Step S302.

  (Step S305) The output unit 15 increments the counter i by 1.

  (Step S306) The output unit 15 determines whether or not the i-th area specifying information exists in the area specifying information for specifying the area where the change is detected. If it exists, the process returns to step S302, and if not, the process returns to the flowchart of FIG.

  Next, the operation of the image change detection apparatus 1 according to the present embodiment will be described using a specific example. In this specific example, as illustrated in FIG. 5, it is assumed that the image change detection device 1 and two or more terminal devices 2 are connected via a wired or wireless communication line 500. The terminal device 2 may be, for example, a PC (Personal Computer), a cellular phone, or an information processing terminal such as a PDA (Personal Digital Assistant). The communication line 500 is, for example, the Internet, an intranet, a public telephone line network, or the like.

  Further, in this specific example, it is assumed that the transmission destination correspondence information shown in FIG. 6 is stored in the transmission destination correspondence information storage unit 14. In the transmission destination correspondence information in FIG. 6, the area specifying information and the transmission destination information are associated with each other. The transmission destination information is assumed to be an e-mail address corresponding to the terminal device 2.

  In this specific example, it is assumed that the change information is an image of a region where a change is detected. In this specific example, it is assumed that the moving image is a moving image of a baseball field. Then, the change detection unit 13 detects a change in the image using a baseball field image that is stored in a recording medium (not shown) and has no player or referee as shown in FIG. 7 as a reference image. It is assumed that the baseball field is divided into a plurality of regions in a square lattice pattern as indicated by broken lines in FIG. Then, it is assumed that area specifying information is set for each of the plurality of areas. FIG. 9 is a diagram illustrating an example of area information that associates the area specifying information with coordinate information indicating the coordinates of the vertices of each area (four coordinates of the vertices). This area information may be stored in a recording medium (not shown) of the image change detection device 1. The coordinate information is information indicating the position of the pixel in the image. By referring to the area information in FIG. 9, it is possible to know the position of each area shown in FIG. 8 and the area specifying information for specifying the area. In this specific example, it is assumed that the change detection unit 13 performs an image change detection process every 5 seconds.

  In this specific example, it is assumed that each area is sold. Then, it is assumed that the e-mail address of the person who purchased the area is associated with area specifying information for specifying the purchased area, as shown in FIG. Therefore, a person who purchased each area can know what is happening in the area he / she purchased by receiving the change information. In addition, after the baseball season is over, a person who purchased each area may be allowed to receive grass, soil, and the like in that area.

  When the baseball game starts, shooting by the camera is started according to the photographer's instruction, and the moving image receiving unit 11 receives the moving image shot by the camera in response (step S101), and the storage unit 12 stores the moving image. Accumulate in the recording medium (step S102). It should be noted that the process of accepting a moving image and accumulating the moving image is repeatedly executed as long as the image is captured by the camera.

  Next, the change detection unit 13 determines that the change detection unit 13 detects a change in the image when 5 seconds have elapsed from the start of moving image accumulation (step S103). Then, the change detection unit 13 detects a change for each of a plurality of regions using the reference image shown in FIG. 7 and the latest image shown in FIG. 10 (step S104). Specifically, the change detection unit 13 uses the reference image of FIG. 7 and the reference image of FIG. 10 for the first region in which the coordinates of each vertex are indicated by the coordinate information included in the first record of the region information of FIG. The latest image shown is compared to determine whether there is a change in the area (steps S201 and S202). In this case, it is assumed that there is no change. Then, the change detection unit 13 performs the same determination on the second area where the coordinates of each vertex are indicated by the coordinate information included in the second record of the area information in FIG. 9 (steps S204, S205, and S202). . In this case, it is assumed that there is a change. Then, the change detection unit 13 acquires area specifying information “A002” for specifying the changed area from the second record of the area information in FIG. 9, and stores the area specifying information “A002” on a recording medium (not shown). Accumulate (step S203). Then, the change detection unit 13 sequentially determines whether or not there is a change for all the remaining areas (steps S202 to S205). As a result, it is assumed that A002, A015, A016... Are stored as area specifying information corresponding to the changed area on a recording medium (not shown).

  The output unit 15 refers to the recording medium in which the area specifying information corresponding to the changed area is temporarily stored, and since one or more area specifying information is stored in the recording medium, the change is detected. It is determined that there is an area (step S105). And the output part 15 performs the process which outputs change information (step S106).

  Specifically, the output unit 15 acquires first area specifying information “A002” that specifies an area in which a change is detected from a recording medium (not shown). Then, the output unit 15 refers to the transmission destination correspondence information stored in the transmission destination correspondence information storage unit 14 and transmits the transmission destination information “xyz @... Mobile” corresponding to the acquired area specifying information “A002”. .Ne.jp "is acquired (steps S301 and S302). Further, the output unit 15 obtains the coordinate information “(X3, Y3), (X5, Y5), (X6, Y6), (X4, Y4)” corresponding to the acquired area specifying information “A002” in FIG. The image is read from the area information, and the image of the area indicated by the coordinate information is acquired from the image shown in FIG. 10 (step S303). This acquired image becomes change information. Thereafter, the output unit 15 transmits an e-mail including the acquired image using the transmission destination information “xyz @ .... mobile.ne.jp” acquired in advance as a transmission destination (step S304). As a result, the electronic mail is received by the terminal device 2, and the user of the terminal device 2 can see the image of the area he / she purchased as shown in FIG. In FIG. 11, it is possible to know that the baseball player has stepped on the area. Thereafter, the process of transmitting the change information is executed similarly for the other areas where the change is detected. Further, thereafter, detection of change and transmission of change information are repeatedly executed every 5 seconds.

  Further, in this specific example, the case where one transmission destination is set for each area has been described, but two or more transmission destinations may be set for each area. For example, when two or more persons can purchase each area, two or more transmission destinations corresponding to the two or more persons who purchased the area may be set for each area. .

  Further, in this specific example, the case where the change information is an image of a region where a change has been detected has been described. However, as described above, this need not be the case. For example, text change information “Change has occurred in your purchased area” may be output. In that case, for example, according to the change information, the purchaser of the area can see the image of the area he / she purchased by watching a baseball game on TV or the like, and knows what happened in that area be able to. Further, the change information may be information related to the content of the image change. For example, the change information may be “a player has entered your purchased area” or “a ball has entered your purchased area”. In this case, for example, the output unit 15 performs pattern matching with a ball image held in advance in an image of a region where a change is detected, and the pattern image matches the image of the ball from the image of the region. Is detected, it will output "A ball has entered your purchased area", otherwise it will output "A player has entered your purchased area" It may be output. In addition, the output unit 15 performs pattern matching for the player in the image of the area where the change is detected, and when at least a part of the image of the player is detected from the image of the area, "A player has entered the area" may be output. Information such as “A player has entered your purchased area” is stored in advance in a recording medium (not shown), and the output unit 15 may read and use the information as appropriate. Further, when a player enters a certain area, if the player can be specified, the name of the player may be output together. In that case, for example, the output unit 15 may output information such as “ABC player has entered the area you purchased”. Moreover, when a player can be identified, change information including information related to the player may be output. For example, player correspondence information, which is information for associating information for identifying a player and information related to the player, is stored in a recording medium (not shown), and the output unit 15 corresponds to information for identifying the identified player. Information related to the attached player may be acquired using the player correspondence information, and change information including information related to the player may be output. The information related to the player may be, for example, an image showing a photo of the player, a diary of the player, or other information related to the player. Thus, by including information related to the player in the change information and outputting it, it is possible to give an incentive to purchase each region.

As a method for identifying a player who has entered a certain area, for example, there are the following methods. First, position information, which is information indicating the position of each player, is acquired and stored in association with the name of the player. In addition, the position information shall be updated according to the change of a player's position. Then, when it is detected that a player has entered a certain area, the player's name corresponding to the position information indicating the position closest to that area may be acquired, and change information including the name may be output. . In this case, change information other than the player's name, for example, information that “{player's name} entered your purchased area” is stored in a recording medium (not shown), and the output unit 15 The acquired player name may be inserted and output at the {player name} position of the information. The position information of the player may be acquired by, for example, a LPS (Local Positioning System) worn by the player, or may be acquired by a GPS (Global Positioning System) worn by the player, It may be obtained by performing three-point surveys using RFID (Radio Frequency Identification), wireless LAN, Bluetooth (registered trademark), etc., and the pressure that the player steps on using a pressure sensor etc. arranged in the field It may be obtained by detecting the position of a sensor or the like, or may be obtained by a device fixed at a predetermined place in the field, such as a human sensor or a camera. The LPS is a device that can calculate a coordinate value from a reference point by an autonomous navigation type positioning sensor having a geomagnetic sensor and an acceleration sensor, for example. In addition, as another method for identifying a player who has entered a certain area, for example, a part of a player who has entered a certain area (for example, a foot or a hand) is identified, and then the entire player including the identified part. The image of the player is identified in the entire frame including the region or in a part of the frame. Identification may be performed. Specifying the player may be, for example, specifying information for identifying the player (more specifically, writing information for specifying the player in a predetermined recording medium or the like). In addition, the method of specifying a person by face recognition is well-known as techniques, such as a well-known monitoring system, for example, The description is abbreviate | omitted. In addition, for example, refer to the following document for a method of identifying a player using a back number.
References: Toshihiko Misu, Masahide Naemura, Masaki Takahashi, Yoshinori Izumi, “Athlete Identification Method for Moving Images by Coordination of Object Tracking and Back Number Recognition”, FIT (Information Science and Technology Forum), 2003

  In the area information of FIG. 9, the case where the position of each area is indicated using the four coordinates of the vertices of each area has been described, but this need not be the case. For example, if the direction and shape of each area are determined, the position of each area may be indicated using two coordinates of the diagonal vertices of each area. The position of each region may be indicated using individual coordinates.

  As described above, according to the image change detection device 1 according to the present embodiment, it is possible to detect a change for each of a plurality of regions in a moving image. And when a change is detected, change information can be output for every area, for example, change information can be transmitted to a person corresponding to each area. As a result, when a change occurs in each area, the person corresponding to each area can know that the change has occurred and the contents of the change. In addition, when a change in each area is detected, the change information is transmitted to a transmission destination corresponding to the area, thereby notifying a person registered in advance that the change has occurred in the area. It becomes possible.

  The plurality of areas may generally be areas on a plane, for example, areas on a plane such as a baseball field or a soccer field, or may include areas above the plane. May be. In the latter case, for example, the change detection unit 13 detects a change that has occurred in an area in the upper space in the vertical direction of a certain area, from changes in moving images taken by two or more cameras having parallax, When the conversion is detected, it may be detected that an image change has occurred in the area. In this way, for example, the occurrence of a change can be detected in the region where the ball has passed over. In addition, a method for detecting which region an object to be photographed (for example, a ball or a player) is located using an image photographed by two or more cameras having parallax is known, Detailed description is omitted.

  In addition, when the moving image is not taken from the vertical upper side of each region, for example, when photographing from the horizontal direction, if the change of each region is detected using only the moving image, A change that does not occur vertically above a certain area is also detected as a change in that area. For example, in a moving image, when a player's head passes through an area in the vicinity of an area where a player actually passes (for example, an area where the player steps on the foot), the player actually Regarding the area in the vicinity of the passed area, a change is detected even though the player does not actually pass (for example, the player does not step on the foot). In that case, the change may also be detected, or by using two or more moving images, or using only moving images from vertically above each region, etc. Only the change that has occurred may be detected as a change in the area.

(Embodiment 2)
An image change detection apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings. In the image change detection apparatus according to the present embodiment, the output unit accumulates change information in different accumulation destinations for each of a plurality of areas.

  FIG. 12 is a block diagram illustrating a configuration of the image change detection device 3 according to the present embodiment. The image change detection device 3 according to the present embodiment includes a moving image reception unit 11, a storage unit 12, a change detection unit 13, an output unit 15, a storage destination correspondence information storage unit 21, and a change information storage unit 22. The transmission instruction information receiving unit 23 and the change information transmitting unit 24 are provided. The configuration and operation other than the storage destination correspondence information storage unit 21, the change information storage unit 22, the transmission instruction information reception unit 23, and the change information transmission unit 24 are configured so that the output unit 15 sends change information to different storage destinations for each of a plurality of areas. Except for the accumulation, the second embodiment is the same as the first embodiment, and a detailed description thereof is omitted.

  In the storage destination correspondence information storage unit 21, storage destination correspondence information is stored. The storage destination correspondence information is information that associates region specifying information that is information for specifying a region with storage destination information that is information indicating the storage destination of the information. The storage destination information may be information indicating a physical storage destination (for example, information for identifying a recording medium), for example, and information indicating a logical storage destination (for example, information for identifying a record or a folder) Etc.).

  The process of storing the storage destination correspondence information in the storage destination correspondence information storage unit 21 does not matter. For example, the storage destination correspondence information may be stored in the storage destination correspondence information storage unit 21 via a recording medium, and the storage destination correspondence information transmitted via a communication line or the like is stored in the storage destination correspondence information storage unit. 21 or the storage destination correspondence information input via the input device may be stored in the storage destination correspondence information storage unit 21. The storage in the storage destination correspondence information storage unit 21 may be a temporary storage in a RAM or the like, or may be a long-term storage. The storage destination correspondence information storage unit 21 can be realized by a predetermined recording medium (for example, a semiconductor memory, a magnetic disk, an optical disk, etc.).

  In the change information storage unit 22, change information is stored. Note that the storage area of the change information storage unit 22 is indicated by the storage destination information included in the storage destination correspondence information stored in the storage destination correspondence information storage unit 21. Therefore, the change information stored in the change information storage unit 22 is accumulated by the output unit 15. The change information storage unit 22 may be composed of a plurality of recording media, or may be composed of a single recording medium. The storage in the change information storage unit 22 may be temporary storage in a RAM or the like, or may be long-term storage. The change information storage unit 22 can be realized by a predetermined recording medium (for example, a semiconductor memory, a magnetic disk, an optical disk, etc.).

  The transmission instruction information receiving unit 23 receives transmission instruction information that is information for instructing transmission of the change information stored in the change information storage unit 22. For example, the transmission instruction information may be transmitted from a terminal device capable of communicating with the image change detection device 3. This transmission instruction information may include area specifying information for specifying an area. Further, when the transmission destination of the change information is different from the transmission source of the transmission instruction information, information indicating the transmission destination of the change information may be included in the transmission instruction information.

  Note that the transmission instruction information receiving unit 23 may or may not include a wired or wireless receiving device (for example, a modem or a network card) for receiving. Further, the transmission instruction information receiving unit 23 may be realized by hardware, or may be realized by software such as a driver that drives the receiving device.

  The change information transmission unit 24 reads change information corresponding to the transmission instruction information received by the transmission instruction information reception unit 23 from the change information storage unit 22 and transmits the change information. The change information transmission unit 24 may read the change information corresponding to the area specified by the area specifying information included in the transmission instruction information from the change information storage unit 22 and transmit the read change information. For example, the transmission destination of the change information may be the transmission source of the transmission instruction information, or when the transmission instruction information includes information indicating the transmission destination of the change information, the transmission destination indicated by the information It may be.

  The change information transmission unit 24 may or may not include a transmission device (for example, a modem or a network card) for performing transmission. The change information transmission unit 24 may be realized by hardware, or may be realized by software such as a driver that drives the transmission device.

  Further, in the present embodiment, the output unit 15 uses the storage destination information associated with the region specifying information for specifying the region in which the change detection unit 13 has detected a change in the image by using the storage destination correspondence information. It is assumed that change information is stored in the storage destination indicated by the storage destination information in the information storage unit 22.

  Note that the storage medium in which the storage unit 12 stores moving images, the storage destination correspondence information storage unit 21, and the change information storage unit 22 may be realized by the same recording medium, or by separate recording media. It may be realized. In the former case, for example, the area storing the storage destination correspondence information is the storage destination correspondence information storage unit 21, and the area storing the change information is the change information storage unit 22.

  Next, the operation of the image change detection device 3 according to the present embodiment will be described using the flowchart of FIG. In the flowchart of FIG. 13, the processes other than steps S401 to S403 are the same as those of the flowchart of FIG. 2 of the first embodiment, and the description thereof is omitted. However, the details of step S106 in the flowchart of FIG. 13 are shown in the flowchart of FIG.

  (Step S401) The transmission instruction information receiving unit 23 determines whether transmission instruction information has been received. If the transmission instruction information is received, the process proceeds to step S402. If not, the process returns to step S101.

  (Step S402) The change information transmission unit 24 reads the change information from the change information storage unit 22 in accordance with the transmission instruction information received by the transmission instruction information reception unit 23.

  (Step S403) The change information transmission unit 24 transmits the change information read in step S402. Then, the process returns to step S101.

  In the flowchart of FIG. 13, the process is terminated by powering off or a process termination interrupt.

  FIG. 14 is a flowchart showing details of the change information output processing (step S106) in the flowchart of FIG.

  (Step S501) The output unit 15 sets the counter i to 1.

  (Step S502) The output unit 15 stores, in the storage destination correspondence information storage unit 21, storage destination information corresponding to the i-th region specifying information among the region specifying information for specifying the region in which the change is detected. Acquired by referring to the storage destination correspondence information.

  (Step S503) The output unit 15 configures change information related to the region specified by the i-th region specifying information. The configuration of the change information may be, for example, generating change information or reading the change information from the recording medium.

  (Step S504) The output unit 15 stores the change information configured in Step S503 in the storage destination indicated by the storage destination information acquired in Step S502.

  (Step S505) The output unit 15 increments the counter i by one.

  (Step S506) The output unit 15 determines whether or not the i-th area specifying information exists in the area specifying information for specifying the area where the change is detected. If it exists, the process returns to step S502. If not, the process returns to the flowchart of FIG.

  Next, the operation of the image change detection device 3 according to the present embodiment will be described using a specific example. As in FIG. 5 of the first embodiment, in this specific example, it is assumed that the image change detection device 3 and two or more terminal devices 2 are connected via a wired or wireless communication line 500. . Also in this specific example, it is assumed that a moving image of a baseball field is received by the moving image receiving unit 11 as in the specific example of the first embodiment. Also in this specific example, the change information is an image of a region where a change has been detected, and change detection processing is performed for each of a plurality of regions in the same manner as in the specific example of the first embodiment. .

  In this specific example, it is assumed that the storage destination correspondence information storage unit 21 stores the storage destination correspondence information shown in FIG. In the storage destination correspondence information in FIG. 15, the area specifying information and the storage destination information are associated with each other. The accumulation destination information is information indicating a record ID corresponding to the change information stored in the change information storage unit 22.

  As in the specific example of the first embodiment, when a baseball game is started, shooting by a camera is started, and moving images are accepted and stored accordingly (steps S101 and S102). Further, it is assumed that the change of the image is detected for each area, and the area specifying information A002, A015, A016,... Is accumulated in the recording medium in which the area specifying information for specifying the changed area is temporarily stored. (Steps S103 and S104).

  Thereafter, the output unit 15 refers to the recording medium in which the area specifying information corresponding to the changed area is temporarily stored, and one or more area specifying information is stored in the recording medium. It is determined that the detected area exists (step S105). And the output part 15 performs the process which outputs change information (step S106).

  Specifically, the output unit 15 acquires first area specifying information “A002” that specifies an area in which a change is detected from a recording medium (not shown). Then, the output unit 15 refers to the storage destination correspondence information stored in the storage destination correspondence information storage unit 21 and acquires the storage destination information “R002” corresponding to the acquired area specifying information “A002” (step S <b> 002). S501, S502). Then, the output unit 15 acquires an image of an area corresponding to the acquired area specifying information “A002” (step S503). This acquired image becomes change information. After that, the output unit 15 stores the acquired image in the record specified by the storage destination information “R002” acquired in advance (step S504). As a result, as shown in FIG. 16, the change information indicating the image is accumulated in the record specified by the record ID “R002”. In FIG. 16, the image itself is shown as the change information. However, this is for convenience of explanation, and the change information is originally data indicating the image (for example, JPEG data). Similarly, it is assumed that the change information is sequentially accumulated in the change information storage unit 22 in other areas where a change is detected (steps S502 to S506).

  Next, a process of transmitting an image of change information accumulated in the change information storage unit 22 to the terminal device 2 will be briefly described.

  It is assumed that a person who purchased an area specified by the area specifying information “A002” operates the terminal device 2 and transmits transmission instruction information in order to view change information corresponding to the area. . Then, the terminal apparatus 2 transmits transmission instruction information including the area specifying information “A002” of the area to the image change detection apparatus 3. The area specifying information “A002” may be previously stored in the terminal device 2 or may be input by the operator of the terminal device 2.

  The transmission instruction information receiving unit 23 of the image change detection device 3 receives the transmission instruction information and passes it to the change information transmitting unit 24 (step S401). Then, the change information transmission unit 24 refers to the storage location correspondence information storage unit 21 and sets the record ID “R002” corresponding to the area specifying information “A002” included in the transmission instruction information received from the transmission instruction information reception unit 23. get. Then, the change information transmission unit 24 refers to the change information storage unit 22, reads an image of change information corresponding to the acquired record ID “R002” (step S 402), and transmits it to the transmission source of the transmission instruction information. (Step S403). The change information thus transmitted is received by the terminal device 2 and displayed in the same manner as in FIG. As a result, the person who purchased the area can see the image of the area he / she purchased and can know what happened in the area.

  When transmission instruction information is transmitted from the terminal device 2, a password or the like is included in the transmission instruction information so that only the person who purchased the area can acquire change information corresponding to the area. The change information may be transmitted only when it is authenticated by the authentication using the password or the like.

  Further, after the change information is transmitted according to the transmission instruction information, the transmitted change information may be deleted from the change information storage unit 22.

  Further, each change information stored in the change information storage unit 22 may be associated with information indicating whether the change information has already been transmitted. And when the change information transmission part 24 transmits change information, you may make it select and transmit the change information which has not been transmitted yet. By doing in this way, it can avoid transmitting the same change information many times.

The transmission instruction information may include information other than the area specifying information. For example, a user ID that identifies a user may be included in the transmission instruction information. In this case, the change information transmission unit 24 acquires area specifying information corresponding to the user ID included in the transmission instruction information using information that associates the user ID with the area specifying information corresponding to the user ID. The change information may be read and transmitted using the acquired area specifying information.
In addition, in the accumulated change information shown in FIG. 16, each change information may be accumulated in association with the date and time when the change is detected.

  As described above, according to the image change detection device 3 according to the present embodiment, when a change in each area is detected, change information can be stored in a storage destination corresponding to the area. A person who wants to receive the change information can receive the change information corresponding to the area by transmitting the transmission instruction information from the terminal device 2 and can view the change information. sell.

  In the present embodiment, a case has been described in which transmission instruction information is received and change information is transmitted according to the received transmission instruction information, but this need not be the case. In that case, the image change detection device 3 may not include the transmission instruction information reception unit 23 and the change information transmission unit 24. When the change information corresponding to the transmission instruction information is not transmitted, for example, the change information is read from the change information storage unit 22 and transmitted to a person corresponding to each change information area by another device. May be.

  In each of the above embodiments, when a change in each area is detected, the change information is transmitted to a transmission destination corresponding to the area, or the change information is accumulated in a storage destination corresponding to the area. Although the case has been described, other processes may be performed as described above. For example, when a change in each area is detected, the change information may be displayed on a display destination corresponding to the area. In that case, for example, in a recording medium (not shown), area specifying information and display destination information that is information indicating a display destination of change information (for example, an ID of a display device or a display area in one display device are specified). Display destination correspondence information, which is information for associating coordinate information, etc.) is stored, and when the change of each area is detected using the display destination correspondence information, the output unit 15 responds to the area. The change information may be displayed on the display destination.

  Further, in each of the embodiments described above, the case of performing different output for each region has been mainly described, but this need not be the case. For example, the output unit 15 may transmit the same change information to one or a plurality of transmission destinations set in advance, even when a change is detected for any region. The change information may be, for example, “A change has been detected in the area specified by the area specifying information A002” or “There is a change detected area”.

  Further, as described above, it goes without saying that an output in a different output form may be performed for each region in which a change in the image is detected. For example, change information is accumulated when a change is detected in a certain area, change information is transmitted when a change is detected in another area, and change information is displayed when a change is detected in another area. You may do it. In this case, for example, output form correspondence information that is information for associating region specifying information and output form is stored in a recording medium (not shown), and the information is used when a change is detected for each region. Thus, the output unit 15 may know the output form corresponding to the area. In the output form correspondence information, information indicating the output destination may also be associated. The information indicating the output destination may be, for example, a transmission destination, a storage destination, a display destination, a print destination (printer ID, etc.), and an audio output destination (speaker ID, etc.).

  In each of the above-described embodiments, a case where a moving image of a field used in sports such as a baseball field, a soccer field, and a tennis court is photographed and received by the moving image reception unit 11 is mainly described. A moving image of the scene may be taken and received by the moving image receiving unit 11.

  In each of the above embodiments, when a moving image is taken by two or more cameras, one field (for example, one baseball field or one soccer field) is formed by two or more cameras. It may be taken.

  In each of the above embodiments, the change detection unit 13 detects a change only for the first frame, for example, even when a change occurs continuously for adjacent frames, and continues after that. Thus, the change may not be detected for a frame in which a change has occurred. For example, when a player passes through an area, the change is detected when a part of the player enters the area for the first time, and then the change is not detected until the player has completely left the area. You may do it.

  In each of the above embodiments, the change detection unit 13 holds a pattern of an image that can appear in each area due to a change in the image generated in each area in a recording medium (not shown). When an object that matches the pattern of the image being played (for example, the image pattern of a ball or a player may be detected), a change in the image in that region may be detected. This match may be a complete match or a similarity that is greater than or equal to a threshold value.

  In each of the above-described embodiments, the case where the image change detection devices 1 and 3 are servers has been described. However, the image change detection devices 1 and 3 may be stand-alone devices or servers in a server / client system. It may be.

  In each of the above embodiments, each processing or each function may be realized by centralized processing by a single device or a single system, or distributed processing by a plurality of devices or a plurality of systems. May be realized.

  Also, in each of the above embodiments, information related to processing executed by each component, for example, each component received, acquired, selected, generated, transmitted, or received Information and information such as threshold values, mathematical formulas, addresses, etc. used by each component in processing are retained temporarily or over a long period of time on a recording medium (not shown) even if not explicitly stated in the above description. May be. Further, the storage of information in the recording medium (not shown) may be performed by each component or a storage unit (not shown). Further, reading of information from the recording medium (not shown) may be performed by each component or a reading unit (not shown).

  In each of the above embodiments, when information used by each component, for example, information such as a threshold value, an address, and various setting values used by each component may be changed by the user Even if it is not specified in the above description, the user may be able to change the information as appropriate, or it may not be. If the information can be changed by the user, the change is realized by, for example, a not-shown receiving unit that receives a change instruction from the user and a changing unit (not shown) that changes the information in accordance with the change instruction. May be. The change instruction received by the receiving unit (not shown) may be received from an input device, information received via a communication line, or information read from a predetermined recording medium, for example. .

  In each of the above embodiments, when two or more constituent elements included in the image change detection apparatuses 1 and 3 have a communication device, an input device, etc., the two or more constituent elements are physically single devices. You may have, or you may have a separate device.

  In each of the above embodiments, each component may be configured by dedicated hardware, or a component that can be realized by software may be realized by executing a program. For example, each component can be realized by a program execution unit such as a CPU reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory. The software that realizes the image change detection device in each of the above embodiments is the following program. That is, this program causes a computer to receive a moving image obtained by photographing a plurality of areas, a storage unit that stores the moving image received by the moving image reception unit, and a moving image stored by the storage unit. For each of the plurality of regions, a change detection unit that detects a change in the image and a region in which the change detection unit detects a change in the image function as an output unit that outputs change information that is information related to the change. Is for.

  In the program, the functions realized by the program do not include functions that can be realized only by hardware. For example, functions that can be realized only by hardware such as a modem or an interface card in an acquisition unit that acquires information, an output unit that outputs information, and the like are not included in at least the functions realized by the program.

  Further, this program may be executed by being downloaded from a server or the like, and a program recorded on a predetermined recording medium (for example, an optical disk such as a CD-ROM, a magnetic disk, a semiconductor memory, or the like) is read out. May be executed by Further, this program may be used as a program constituting a program product.

  Further, the computer that executes this program may be singular or plural. That is, centralized processing may be performed, or distributed processing may be performed.

  FIG. 17 is a schematic diagram illustrating an example of an external appearance of a computer that executes the program and realizes the image change detection apparatuses 1 and 2 according to the above embodiments. Each of the above embodiments can be realized by computer hardware and a computer program executed thereon.

  In FIG. 17, a computer system 900 includes a computer 901 including a CD-ROM (Compact Disk Read Only Memory) drive 905, an FD (Floppy (registered trademark) Disk) drive 906, a keyboard 902, a mouse 903, a monitor 904, and the like. Is provided.

  FIG. 18 is a diagram showing an internal configuration of the computer system 900. In FIG. 18, in addition to the CD-ROM drive 905 and the FD drive 906, a computer 901 is connected to an MPU (Micro Processing Unit) 911, a ROM 912 for storing a program such as a bootup program, and the MPU 911. A RAM (Random Access Memory) 913 that temporarily stores program instructions and provides a temporary storage space, a hard disk 914 that stores application programs, system programs, and data, and an MPU 911 and a ROM 912 are interconnected. And a bus 915. The computer 901 may include a network card (not shown) that provides connection to the LAN.

  A program that causes the computer system 900 to execute the functions of the image change detection apparatuses 1 and 2 according to the above embodiments is stored in the CD-ROM 921 or FD 922 and inserted into the CD-ROM drive 905 or FD drive 906. May be transferred to the hard disk 914. Instead, the program may be transmitted to the computer 901 via a network (not shown) and stored in the hard disk 914. The program is loaded into the RAM 913 when executed. The program may be loaded directly from the CD-ROM 921, the FD 922, or the network.

  The program does not necessarily include an operating system (OS) or a third-party program that causes the computer 901 to execute the functions of the image change detection apparatuses 1 and 2 according to the above embodiments. The program may include only a part of an instruction that calls an appropriate function (module) in a controlled manner and obtains a desired result. How the computer system 900 operates is well known and will not be described in detail.

  Further, the present invention is not limited to the above-described embodiment, and various modifications are possible, and it goes without saying that these are also included in the scope of the present invention.

  As described above, according to the image change detection device and the like according to the present invention, it is possible to detect changes other than the entire moving image, which is useful as a device for detecting a change in an image.

1 is a block diagram showing a configuration of an image change detection device according to Embodiment 1 of the present invention. The flowchart which shows operation | movement of the image change detection apparatus by the embodiment The flowchart which shows operation | movement of the image change detection apparatus by the embodiment The flowchart which shows operation | movement of the image change detection apparatus by the embodiment The figure which shows the structure of the system containing the image change detection apparatus by the embodiment The figure which shows an example of the transmission destination corresponding | compatible information in the embodiment The figure which shows an example of the reference image in the embodiment The figure for demonstrating the several area | region in the embodiment The figure which shows an example of the area | region information in the embodiment The figure which shows an example of the image in the embodiment The figure which shows an example of the display of the terminal device in the embodiment The block diagram which shows the structure of the image change detection apparatus by Embodiment 2 of this invention. The flowchart which shows operation | movement of the image change detection apparatus by the embodiment The flowchart which shows operation | movement of the image change detection apparatus by the embodiment The figure which shows an example of the storage destination corresponding | compatible information in the embodiment The figure which shows an example of the accumulated change information in the embodiment Schematic diagram showing an example of the external appearance of a computer system in each embodiment The figure which shows an example of a structure of the computer system in each embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 3 Image change detection apparatus 2 Terminal device 11 Moving image reception part 12 Accumulation part 13 Change detection part 14 Transmission destination corresponding | compatible information storage part 15 Output part 21 Accumulation destination corresponding | compatible information storage part 22 Change information storage part 23 Transmission instruction information receiving part 24 Change information transmitter

Claims (10)

A moving image receiving unit for receiving moving images obtained by photographing a plurality of areas;
A storage unit for storing the moving images received by the moving image receiving unit;
A change detection unit that detects a change in the image for each of a plurality of regions of the moving image accumulated by the accumulation unit;
An image change detection apparatus comprising: an output unit that outputs change information that is information relating to a change in an area in which the change detection unit detects a change in an image. The image change detection apparatus according to claim 1, wherein the output unit performs different output for each region where the change detection unit detects a change in an image. A transmission destination correspondence information storage unit that stores transmission destination correspondence information that is information for associating region identification information that is information for specifying a region with transmission destination information that is information indicating a transmission destination of the information;
The output unit transmits the change information to a transmission destination indicated by transmission destination information associated with the area specification information specifying the area in which the change detection unit has detected a change in the image by the transmission destination correspondence information. The image change detection device according to claim 2. A storage destination correspondence information storage unit that stores storage destination correspondence information that is information for associating region specification information that is information for specifying a region and storage destination information that is information indicating a storage destination of the information;
A change information storage unit that stores the change information;
The output unit adds the change information to the storage destination indicated by the storage destination information associated with the region specifying information specifying the region where the change detection unit has detected a change in the image by the storage destination correspondence information. The image change detection apparatus according to claim 2, wherein the image change detection apparatus accumulates in a storage unit. A transmission instruction information receiving unit for receiving transmission instruction information which is information for instructing transmission of change information stored in the change information storage unit;
The image change detection apparatus according to claim 4, further comprising: a change information transmission unit that reads out and transmits change information corresponding to the transmission instruction information received by the transmission instruction information reception unit from the change information storage unit. The image change detection device according to claim 1, wherein the change information is information indicating that a change in the image has been detected. The image change detection device according to claim 1, wherein the change information is an image of a region where a change in the image is detected. The image change detection device according to claim 1, wherein the change information is information related to a content of an image change. An image change detection method processed using a moving image reception unit, an accumulation unit, a change detection unit, and an output unit,
A moving image receiving step in which the moving image receiving unit receives moving images of a plurality of areas;
An accumulating step in which the accumulating unit accumulates the moving image accepted in the moving image accepting step;
A change detecting step in which the change detecting unit detects a change in the image for each of a plurality of regions of the moving image stored in the storing step;
An image change detection method comprising: an output step in which the output unit outputs change information, which is information related to the change, for a region in which an image change is detected in the change detection step. Computer
A moving image receiving unit for receiving moving images obtained by photographing a plurality of areas;
A storage unit for storing the moving images received by the moving image receiving unit;
A change detection unit that detects a change in the image for each of a plurality of regions of the moving image accumulated by the accumulation unit;
A program for causing an area in which the change detection unit has detected a change in an image to function as an output unit that outputs change information that is information related to the change.

Images