Abstract:
PROBLEM TO BE SOLVED: To easily recognize the height and the position of a photographing target point in a three-dimensional space. SOLUTION: A three-dimensional photographing area including a floor surface 4 is imaged by one master camera 2. On the basis of an image pickup signal of the master camera 2, a two-dimensional imaging screen of the photographing area is displayed on a display device 10. Two-dimensional coordinate positions (U1, V1) which are coordinates, on the two-dimensional picture, of an object on a reference two-dimensional area 4a corresponding to the floor surface 4 on the two-dimensional picture are designated by a mouse of an operation part 14. The two-dimensional coordinate positions (U1, V1) are transformed into first three-dimensional coordinate positions (xw, yw, 0) on the three-dimensional space by a personal computer 8. The height of the object from the floor surface 4 in the three-dimensional space is set by operating the mouse of the operation part 14, and an operation pointer 16 is displayed at that set position. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To achieve camera calibration very simply. SOLUTION: In a camera calibration apparatus and method which determines camera parameters for associating two-dimensional image coordinates set on a photographed image by a fixed camera with three-dimensional world coordinates set in the real space, a map image which simulates a plane (x, y, 0) of which the height z in the real space is zero is provided. The two dimensional coordinates (α, β) of the map image and the world coordinates (x, y, 0) of the plane are associated with each other by a scaler 40. When the position of an indicator placed in the real space is designated on the map image, therefore, the world coordinates (x, y, 0) of the position is determined, and by adding the height of the indicator to this, the world coordinates (x, y, z) at the height position of the indicator is determined. The world coordinates (x, y, z) of the indicator are thus determined very simply, achieving camera calibration very simply. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To accurately control the direction of a camera on a photographed image as designated. SOLUTION: A monitor system 10 comprises a revolving camera 20 and a personal computer (PC) 30 as a control apparatus for controlling the direction of the camera 20. In such a monitor system 10, an image photographed by the camera 20 is displayed on a display 32 of the PC 30. When an arbitrary point is designated on the displayed photographed image by a mouse 34, the direction of the camera 20 is then controlled so that the designated point is positioned in the center of a screen. In such control, a mechanical axis coordinate system on the basis of a turning center of the camera 20 is conceptually introduced. In the mechanical axis coordinate system, the direction of the camera corresponding to the designated point is then determined, and the relevant camera is turned in the determined direction. As a result, the direction of the camera is accurately controlled to the direction corresponding to the designated point. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To precisely measure a height of a moving person, as to a height measuring instrument for measuring the height of the person based on a photographed image with the photographed person. SOLUTION: A passerby 4 moving on a floor face 6 is photographed by a video camera 2. A personal computer 10 determines a height data of the passerby 4 from the floor face 6, in every of the plurality of images obtained from the video camera 2 photographing the passerby 4 moving in positions different respectively on the floor face 6. The personal computer 10 processes statistically the respective height data to determine the height of the passerby 4. An average value and a standard deviation of the respective height data are calculated, in the statistical processing, to settle the average value of the the height data having a value or more obtained by adding the standard deviation to the average value, as the height of the person. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To track the movement of a mobile and displaying the result on one screen on the basis of images photographed by a plurality of cameras. SOLUTION: Mobile detection and 3D conversion sections 28, 30 detect the mobile depending on imaging signals generated from a camera 12 for imaging an imaging region 18 and a camera 14 for imaging an imaging region 20 which is partly overlapped with the imaging region 18, and generate labels including mobile body positional information representing the position of the mobile and mobile position accuracy information representing the accuracy of the mobile positional information. An integration server 36 integrates the positional information items of the labels on the basis of the mobile position accuracy information of both the labels when the labels correspond to one and same mobile. Images corresponding to the imaging regions 18, 20 are displayed on one display screen of clients 38, 42, indicators corresponding to the labels are displayed at positions corresponding to the positional information items of the labels, and after the labels are integrated, an indicator is displayed on the basis of the integrated label. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To automatically acquiring the height of an object to be sensed by specifying the object to be sensed in a two-dimensional image acquired by one camera. SOLUTION: A master camera 2 two-dimensionally photographs both a reference plane 4 in a three-dimensional space and the object to be sensed in the reference plane. The object to be sensed is determined on the basis of a two-dimensional image of the camera 2. Both first two-dimensional coordinates of the image of the object to be sensed in a two-dimensional reference plane 4a corresponding to a reference plane 4 in the two-dimensional image and second two-dimensional coordinates of the object to be sensed at a distance from the two-dimensional reference plane 4a on the basis of the two-dimensional coordinates are determined by a personal computer 8. The personal computer 8 converts the first two-dimensional coordinates into first three-dimensional coordinates in a reference plane 4 in a three-dimensional space and converts the second coordinates into second three-dimensional coordinates. The conversion into the second three-dimensional coordinates is performed by arranging the location of a first or second three-dimensional coordinate axis in the second three-dimensional coordinates at the location of first or second three-dimensional coordinates of the first three-dimensional coordinates. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a processing result as expected corresponding to the luminance of color image data, in an image processor which processes the color image data by a neutral network. SOLUTION: The color image data Do are inputted to the network part 16 of the neutral network 14 of a BP-method learning type after normalized to values of 0 to 1 by a normalization part 12. The network part 16 applies luminance conversion processing to the color image data Do on the basis of parameters Wnm, Wpn, θn and θp set from a parameter setting part 18. At this time, the color image data Do are processed as a quaternion. Namely, three components, an R component, a G component and a B component constituting the color image data Do are collectively processed as three-dimensional vector data. Furthermore, the parameters Wnm, Wpn, θn and θp set in the network part 16 are selected according to the luminance of the color image data Do. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To enhance the sensitivity with which a moving object is detected where its movement, if any, does not easily appear as the magnitude of a brightness change. SOLUTION: A T calculating part 2 detects a change in the brightness of a pixel within an image frame. A T determining part 6 compares the detected change with a T threshold, and if the detected change is greater than the T threshold, determines that the movement of the object exists at the pixel. A threshold setting part 8 which creates the T threshold sets the T threshold by using the dispersion of the brightness values of pixels which corresponds to the pixel in the previous frame. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for detecting probability of the occurrence of an accident or a case in a predetermined monitoring area. SOLUTION: A monitoring apparatus 1 detects a plurality of moving objects in a monitoring area from a video of a camera 2, detects the probability of the occurrence of an accident or a case based on mutual relationship of positions of the plurality of moving objects and movement information, and records the video in a recording medium while reflecting the detection results. Further, the monitoring apparatus 1 discriminates the height of the probability of the occurrence of a case based on the positions of the plurality of moving objects and the movement information. Further, the monitoring apparatus 1 detects a further detailed accident or case based on mutual relationship of the positions of the moving objects and the movement information in a certain frame in addition to the moving object information in a succeeding frame. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To simulate which areas are to be blind areas by walls, in a situation with no camera installed, if the cameras are installed in a location having the walls. SOLUTION: Wall indicators for indicating walls are displayed in desired areas on a top view of a given area. Camera indicators for indicating the cameras are displayed on the area image. A shooting scope of the camera from the camera installing positions is determined. If the shooting scope includes some or all of the wall indicators, blind areas 47a by the walls are determined, and excluding them, a horizontal viewing field indicator 18, which is a projection view of the shooting scope, is displayed on the top view. COPYRIGHT: (C)2010,JPO&INPIT