摘要:
The invention relates to a method for ascertaining the position and orientation of a camera (11) relative to a real object (12) for use in merging a virtual data model (13) with an image generated by the camera (11), said image comprising at least one part of the real object (12). The method comprises the following steps: disposing the camera (11) on a movable part (22) of a sensor system (20) which is coupleable to at least one probe (23) which is suitable to come in contact with at least one part of the real object (12), positioning the movable part (22) of the sensor system, with the camera (11) applied, in such a manner that the image is generatable by the camera, and generating position data (31) of the sensor system (20) with respect to the real object (12), and determining the position and orientation of the camera (11) on the basis of the position data (31, 32) of the sensor system (20).
摘要:
A system for equalizing transition density in an integrated circuit includes a first circuit configured to transition according to a data stream; and a second circuit configured to transition at a time when the first circuit is not transitioning.
摘要:
A system for equalizing transition density in an integrated circuit includes a first circuit configured to transition according to a data stream; and a second circuit configured to transition at a time when the first circuit is not transitioning.
摘要:
A device for degenerating a fibroid comprises a receptacle sized and shaped so as to receive a uterine artery therein and a vacuum source connected to the receptacle. The vacuum source is capable of creating a vacuum sufficient to draw a uterine artery into the receptacle, and to fold it in a manner that substantially obstructs blood flow therethrough. In a method of degenerating a fibroid, the aforesaid device is placed near a uterine artery, and a vacuum is applied to draw the uterine artery into the receptacle so that the uterine artery folds shut, thereby obstructing blood flow through the artery. The vacuum is applied for a time that is sufficient to degrade or kill the fibroid, after which the vacuum is released.
摘要:
A delay-locked loop (DLL) of an integrated circuit (IC) with testing circuitry and a method for testing a DLL. During test mode, a phase comparator of the DLL receives a test clock in place of the reference clock and determines the phase difference between the test clock and the clock fed back to the DLL from a clock buffer tree. A variable delay element of the DLL then shifts the reference clock in time by an amount that depends on that phase difference. The variable delay element can be exercised by varying the phase of the test clock with respect to the reference clock by a known phase offset to cause the variable delay element to produce a range of delays. Whether the variable delay element is functioning properly can be determined by checking whether the phase of the test clock is aligned with the phase of the feedback clock.
摘要:
A starch fiber produced by a spinning process and comprising:A A first amount of 1 to 100 parts of a starch melt-spinnable composition comprising1. a second amount of 56 to 96 parts of at least one modified and/or unmodified starch,2. a third amount of 4 to 40 parts of at least one destructuring agent,3. a fourth amount of 0 to 4 parts of at least one additive, selected from urea, urea derivatives, emulsifiers, lubricants, and proteins and their alkali salts,components 1, 2 and 3 totaling 100 parts; andB a fifth amount of 99 to 0 parts of at least one melt-spinnable polymer,ingredients A and B totaling 100 parts.In addition, there may also be included 0 to 20 parts of conventional additives for melt spinning compositions.The invention further relates to a process for the production of these starch fibers from this melt spinning composition, and to uses for fibers which, by modification with the starch melt-spinnable composition, have special properties.
摘要:
A device for connecting a fan to the inlet of a face mask filter including an adapter having resilient arms to fasten it to the filter and an air duct extends from the fan outlet to the filter inlet. The adapter has an internal seal to connect the outlet end of the air duct to the inlet of the filter. A housing for the fan is partly molded directly on the adapter adjacent to the inlet end of the air duct. The air duct is short and straight and has low flow resistance.
摘要:
The invention relates to a method for representing a virtual object in a real environment, having the following steps: generating a two-dimensional representation of a real environment by means of a recording device, ascertaining a position of the recording device relative to at least one component of the real environment, segmenting at least one area of the real environment in the two-dimensional image on the basis of non-manually generated 3D information for identifying at least one segment of the real environment in distinction to a remaining part of the real environment while supplying corresponding segmentation data, and merging the two-dimensional image of the real environment with the virtual object or, by means of an optical, semitransparent element, directly with reality with consideration of the segmentation data. The invention permits any collisions of virtual objects with real objects that occur upon merging with a real environment to be represented in a way largely close to reality.
摘要:
A method for determining the pose of a camera relative to a real environment includes the following steps: taking at least one image of a real environment by means of a camera, the image containing at least part of a real object, performing a tracking method that evaluates information with respect to correspondences between features associated with the real object and corresponding features of the real object as it is contained in the image of the real environment, so as to obtain conclusions about the pose of the camera, determining at least one parameter of an environmental situation, and performing the tracking method in accordance with the at least one parameter. Analogously, the method can also be utilized in a method for recognizing an object of a real environment in an image taken by a camera.
摘要:
Method for determining the pose of a camera with respect to at least one object of a real environment for use in authoring/augmented reality application that includes generating a first image by the camera capturing a real object of a real environment, generating first orientation data from at least one orientation sensor associated with the camera or from an algorithm which analysis the first image for finding and determining features which are indicative of an orientation of the camera, allocating a distance of the camera to the real object, generating distance data indicative of the allocated distance, determining the pose of the camera with respect to a coordinate system related to the real object of the real environment using the distance data and the first orientation data. May be performed with reduced processing requirements and/or higher processing speed, in mobile device such as mobile phones having display, camera and orientation sensor.