摘要:
A system is provided for obtaining parameters about the position and orientation of a camera, where the camera has a fixed position and orientation, by using the image coordinates and world coordinates of markers included in an image photographed by the camera. This system uses a live-image display mode for successively obtaining images input to the camera and a still-image display mode for obtaining an image input to the camera at predetermined time. The markers can be extracted by using the image obtained in either mode. The system can select either automatic-extraction mode or manual-extraction mode for extracting the marker in live images, so that the markers can be extracted with a high degree of accuracy under all conditions to obtain the position and orientation parameters of the camera.
摘要:
A position and an orientation of an image capturing device or an object to which an inclination sensor is mounted are obtained without performing iterative calculation. A position and orientation measuring method includes the steps of: inputting a measured inclination value of an inclination sensor mounted to one of an object and an image capturing device; inputting a captured image from the image capturing device; detecting an index on the object from the captured image; and calculating a position and an orientation of one of the object and the image capturing device to which the inclination sensor is mounted on the basis of the measured inclination value, an image coordinate of the detected index, and already-known positional information on the detected index without performing iterative calculation.
摘要:
A position and orientation determination apparatus for identifying a parameter indicating the position and orientation of image sensing apparatus which performs image sensing on actual space where plural feature points exist in already-known positions. In the position and orientation determination apparatus, the position and orientation of the image sensing apparatus can be measured by a method other than utilization of video image obtained by image sensing, and a parameter indicating the position and orientation of the image sensing apparatus is obtained. Then, the parameter is corrected based on the plural feature points in the video image of actual space obtained by image sensing by the image sensing apparatus, and a parameter indicating the position and orientation of the image sensing apparatus is identified. Upon correction of the parameter, first, the parameter is corrected by a general method using the feature points, and then correction is performed by rotation about a visual axis, thereby the position and orientation of the image sensing apparatus can be detected with high accuracy.
摘要:
In an information processing method, an orientation sensor is mounted on a targeted object to be measured, and bird's-eye view cameras for capturing images of the targeted object are fixedly installed. From the images captured by the bird's-eye view cameras, an index detecting unit detects indices mounted on the orientation sensor. A measured orientation value from the orientation sensor is input to an orientation predicting unit, and the orientation predicting unit predicts the present orientation of the targeted object based on an azimuth-drift-error correction value. A position-orientation calculating unit uses the image coordinates of the detected indices to calculate the position of the imaging device and an update value of the azimuth-drift-error correction value, which are unknown parameters. From the obtained parameters, the position-orientation calculating unit finds and outputs the position and orientation of the targeted object.
摘要:
An external index detection unit (105) receives an image sensed by a camera (100), and detects an external index set in a real scene. A tachometer (110) measures the rotational velocities of two rear wheels of a vehicle. A vehicle measurement unit (120) measures the position and azimuth of the vehicle on the basis of the image coordinate position of the external index and the rotational velocities of the two rear wheels of the vehicle. A head index detection unit (135) receives an image sensed by a camera (130), and detects a head index set on the head of a passenger (132). A head measurement unit (140) measures the position of the head on the basis of the image coordinate position of the head index. An image generation unit (150) generates a display image based on the position and azimuth of the vehicle and the position of the head, so that the passenger can observe predetermined navigation information superimposed at a predetermined position of the real scene, and controls a projector (160) to project the generated image.
摘要:
A game apparatus allows a virtual object to act in a mixed reality space as if it had its own will. A player can play a game with the virtual object. Rules for controlling the action patterns of the virtual object on the basis of the objective of the game, and the relative positional relationship between the virtual object and the real object is pre-stored. The next action pattern of the virtual object is determined based on an operator command, the stored rule(s), a simulation progress status, and geometric information of a real object(s).
摘要:
A mixed reality presentation apparatus and control method thereof which can allow for suitable display of a virtual object depending on tone, brightness, and lighting conditions of a physical space on which the virtual object is superimposed and displayed is disclosed. The mixed reality presentation apparatus according to the present invention includes: a display setting adjustor 106 which adjusts the display colors and position of virtual information and the lighting settings based on the tone of the physical space which the observer sees and it determines the display colors such that a large tone difference from the physical space image is achieved for virtual text information and virtual wire frame information as well as the lighting settings used for drawing a three-dimensional virtual object with a tone such that it is merged with an object existing in the physical space.
摘要:
An image processing apparatus comprises: shape obtaining means for obtaining information indicating a surface shape of a target object; discrimination means for discriminating a contact portion and a noncontact portion between the target object and an imaging surface of an ultrasonic probe which captures an ultrasonic image of the target object; position and orientation obtaining means for obtaining information indicating a position and orientation of the ultrasonic probe at the time of imaging; and alignment means for estimating deformation of the target object based on information indicating the surface shape, a discrimination result obtained by the discrimination means, and information indicating the position and orientation, and aligning the surface shape with the ultrasonic image.
摘要:
An image processing apparatus obtains location information of each image feature in a captured image based on image coordinates of the image feature in the captured image. The image processing apparatus selects location information usable to calculate a position and an orientation of the imaging apparatus among the obtained location information. The image processing apparatus obtains the position and the orientation of the imaging apparatus based on the selected location information and an image feature corresponding to the selected location information among the image features included in the captured image.
摘要:
An information processing apparatus for deforming an original image includes an obtaining unit configured to obtain a deformation rule by associating a movement of a feature area caused by deformation of the original image with the deformation, and a deformation unit configured to deform the original image in accordance with the deformation rule, using, as a condition of constraint, position information about a feature area of the target image and a corresponding area of the original image.