摘要:
An economical surveillance apparatus robust to an environmental change includes an input unit for inputting images in a time series, a background image memory unit for storing a plurality of input images, a difference image memory unit for calculating and storing difference degree between a plurality of background images of the background image memory unit and an image inputted afresh, and a judging unit for judging an existence/absence of an invading object by utilizing the value of the difference degree of the difference image memory unit. This surveillance apparatus can automatically register a plurality of background images from a camera image. Since the background images that are no longer used are automatically erased, the drop of detection speed and detection sensitivity can be prevented.
摘要:
A moving object is detected from a movie. The actual movie has a complicated background. In order to detect the moving object, the invention is constructed to comprise, in addition to means 500 for inputting the movie, and display 300 for outputting the processed result: means 700 for judging the interval which is predicted to belong to the background as to a pixel region in the movie; means 800 for extracting the moving object; and means 900 for calculating the moving direction and velocity of the moving object.Thanks to the above-specified construction, even under the complicated background in which not only the change in the illumination condition but also the structure change will occur, the presence of the structure change of the background can be judged to detect/extract the moving object on real time. Moreover, the moving direction and velocity of the moving object can also be calculated.
摘要:
A system for detecting a point of change between video shots from a video having a plurality of succeeding frames. The system includes video playback apparatus for playing a video chronologically one frame at a time, and a display for displaying the video. The a processing device for calculating a feature quantity of video image data for each frame, determining a first correlation coefficient between a feature quantity of a current frame and a feature quantity calculated from an immediately preceding frame and determining a second correlation coefficient between the feature quantity of the current frame and a feature quantity of at least two frames preceding the current frame, and indicating on the display a point of change between video shots when the first correlation coefficient and the second correlation coefficient are out of predetermined allowable ranges. The correlation coefficients of each frame is stored and can be used by the processing device to dynamically change a reference used for detecting a point of change between video shots. The change in the reference is performed based on the stored correlation coefficients or feature quantities of past frames.
摘要:
A moving object is detected from a movie which has a complicated background. In order to detect the moving object, there is provided a unit for inputting the movie, a display unit for outputting a processed result, a unit for judging an interval which is predicted to belong to the background as part of a pixel region in the movie, a unit for extracting the moving object and a unit for calculating the moving direction and velocity of the moving object. Even with a complicated background in which not only a change in illumination condition, but also a change in structure occurs, the presence of the structure change of the background can be determined so as to detect and/or extract the moving object in real time. Additionally, the moving direction and velocity of the moving object can be determined.
摘要:
For image recording/reproduction in a monitoring system, a monitoring image signal as inputted is converted into a plurality of time-serial digitized monitoring image frames to be stored temporarily in a first storage area. From the plurality of digitized monitoring image frames stored in the first storage area, a plurality of monitoring image frames relevant to at least one type of concerned event for monitoring are extracted to be stored in a second storage area. A monitored event database having a data structure comprised of elements each containing information concerning a storing location of relevant monitoring image frame in the second storage area and information concerning attributes of the relevant monitoring image frame for each of the monitoring image frames stored in the second storage area is generated to be stored in a third storage area. In response to a perusal request issued by user by using a WEB browser and sent via a network, the monitored event database is searched for acquiring a storing location of plural monitoring image frames relevant to the perusal request in the second storage area to thereby select from the second storage area a plurality of monitoring image frames relevant to the perusal request. The selected plural monitoring image frames are converted into HTML data to be sent to a display device connected via a network to be displayed on a display device in a two-dimensional layout or in the form of time-serial animation.
摘要:
An economical surveillance apparatus robust to an environmental change includes an input unit for inputting images in a time series, a background image memory unit for storing a plurality of input images, a difference image memory unit for calculating and storing difference degree between a plurality of background images of the background image memory unit and an image inputted afresh, and a judging unit for judging an existence/absence of an invading object by utilizing the value of the difference degree of the difference image memory unit. This surveillance apparatus can automatically register a plurality of background images from a camera image. Since the background images that are no longer used are automatically erased, the drop of detection speed and detection sensitivity can be prevented.
摘要:
A system for detecting a point of change between video shots from a video having a plurality of succeeding frames. The system includes video playback apparatus for playing a video chronologically one frame at a time, and a display for displaying the video. The a processing device for calculating a feature quantity of video image data for each frame, determining a first correlation coefficient between a feature quantity of a current frame and a feature quantity calculated from an immediately preceding frame and determining a second correlation coefficient between the feature quantity of the current frame and a feature quantity of at least two frames preceding the current frame, and indicating on the display a point of change between video shots when the first correlation coefficient and the second correlation coefficient are out of predetermined allowable ranges. The correlation coefficients of each frame is stored and can be used by the processing device to dynamically change a reference used for detecting a point of change between video shots. The change in the reference is performed based on the stored correlation coefficients or feature quantities of past frames.
摘要:
A digital camera has an image sensor, and an optical system for focusing a scene on the image sensor. A zooming system is used for changing a zoom rate of the scene that is focused on the image sensor. By operating the zooming system during the recording of a series of images, each of the images has a different zoom rate and therefore a different level of detail and field of view. The images are combined to form one still image of super high resolution. The zoom rate between images is detected by using horizontal and vertical pixel intensity value projection distributions in both forward and backward prediction methods. Horizontal and vertical candidate projection distributions that are correlated to a range of possible zoom rates are compared with the horizontal and vertical projection distributions of the former and current images being processed to determine a least error match that is selected as the zoom rate between the adjacent images. Using the image to image zoom rate, a scaling factor is determined that is used for scaling each current image before overwriting the current image over the former images previously written to the image buffer. In this way, the detail of each image in the series is written to the image buffer and a super high resolution, wide angle still image is formed that can be stored and displayed.
摘要:
In order to reduce the load on the operator in monitoring a moving object in the moving picture signal supplied from the imaging device, the signal is displayed in one region of the display device. The moving route of the moving object which has entered the view of the imaging device is extracted, based on the signal. The first image data showing the image of a moving route of an extracted moving object is generated, and the second image data showing the image of the moving object is generated based on the signal. The overlapped image of the image of the moving route and the image of the moving object is displayed in another region of the display device together with the extraction time of the image of the moving object. The processing above is repeated to other moving objects which enter the view later on. The overlapped images for different moving images thus extracted are displayed adjacent to each other in the region.
摘要:
An envelope arithmetic device for determining arithmetically an envelope of a sound signal waveform associated with video image signals inputted on a time-serial basis, a sound level threshold setting device for setting previously a threshold value of sound level for values of the above-mentioned envelope and a start/end point detecting device for detecting points at which the above-mentioned threshold level and the above-mentioned envelope intersect each other as the start and end points of the sound segment are provided for thereby arithmetically determining an envelope of a sound waveform associated with the video for detecting as the start point of the sound segment a point at which the value of the envelope exceeds the threshold of the sound level while detecting as the end point a point at which the value of the envelope becomes smaller than the threshold value. The interval of the video corresponding to the start point and the end point is registered in terms of a number identify a frame constituting a part of the motion pictures.