32results about How to "Convenient segmentation" patented technology

A surgical navigation system includes a source of a patient anatomy data, wherein the patient anatomy data comprises a three-dimensional reconstruction of a segmented model comprising at least two sections representing parts of the anatomy. A surgical navigation image generator is configured to generate a surgical navigation image comprising the patient anatomy. A 3D display system is configured to show the surgical navigation image wherein the display of the patient anatomy is selectively configurable such that at least one section of the anatomy is displayed and at least one other section of the anatomy is not displayed.

Systems and methods of processing video data are provided. Video data having a series of video frames is received and processed. One or more instances of a candidate feature are detected in the video frames. The previously decoded video frames are processed to identify potential matches of the candidate feature. When a substantial amount of portions of previously decoded video frames include instances of the candidate feature, the instances of the candidate feature are aggregated into a set. The candidate feature set is used to create a feature-based model. The feature-based model includes a model of deformation variation and a model of appearance variation of instances of the candidate feature. The feature-based model compression efficiency is compared with the conventional video compression efficiency.

Methods, systems, and products are disclosed for providing communications services. One method receiving at a service provider a user's request for communications service. The user is permitted to negotiate with other service providers to fulfill the request for communications service.

The invention provides an improved infrared image segmentation algorithm based on the Otsu method, and the algorithm can solve a problem of poor segmentation effect caused by sky exposure to the greatest extent, and can enable the segmented target to maintain a more complete shape. Because the contrast of an infrared image is low relatively and the gray scale range is relatively small, the Otsu method cannot achieve the good segmentation of a target. Through giving consideration to the impact on the segmentation from the image gray scale, the number of background pixels of an image and the number of target pixels, the algorithm achieves the improvement of a formula for solving a variance in a conventional Otsu method, irons out the defects that an infrared image segmentation algorithm based on the Otsu method cannot obtain a better segmentation result under the condition of sky exposure and smaller contrast between the sky and the target, and enables the segmentation effect to be goodin a region where the contrast between the target and the sky background is larger.

The invention discloses an automatic bamboo cutting machine. The automatic bamboo cutting machine comprises a chassis. A crawler type walking base is installed at the bottom of the chassis. A storagebox is fixed to one end of the top of the chassis. A first mechanical arm is fixed to the other end of the top of the chassis. Second mechanical arms fixed to the top of the chassis are arranged on the two sides of the first mechanical arm. An installing frame is fixed to one end of the first mechanical arm, a first installing plate is fixed to one side wall of the installing frame, two arc-shapedfirst mechanical jaws are rotationally connected to the end, away from the installing frame, of the first installing plate, tool bits are fixed to the tops of the two first mechanical jaws, each of the two sides of the first installing plate is provided with a second installing plate and a third installing plate which are fixedly connected with the installing frame, and carrying plates are fixedto the tops of the second installing plates. Bamboo can be conveniently felled and segmented, the length of the felled bamboo can be adjusted according to requirements, the felled bamboo can be conveniently stacked and conveyed, bamboo felling is efficient, the labor intensity of workers is reduced, and the use requirements of people are met.

The invention provides a machining tooling and method for a curved panel. The machining tooling for the curved panel comprises a plurality of vertical columns used for supporting the curved panel. Themultiple vertical columns are distributed at intervals in parallel. Each vertical column comprises a bottom pipe, a top pipe opposite to the upper part and the lower part of the bottom pipe and a lead screw arranged between the bottom pipe and the top pipe. The top ends of the top pipes are used for being fixedly connected with the curved panel. The two ends of each lead screw are connected withthe corresponding bottom pipe and the corresponding top pipe in a threaded mode correspondingly. The middle of each lead screw is provided with a holding part. The lead screws are rotated through theholding parts, and the distance from each bottom pipe to the corresponding top pipe is adjusted. The end faces of the top ends of the multiple vertical columns form a curved surface, and the degree ofcurve of the curved surface is consistent with the designed degree of curve of the curved panel. The degree of curve of the curved panel is corrected according to the end faces of the top ends of thevertical columns so that the curved panel can be fixed to the machining tooling. Therefore, when the curved panel is machined again, the large deformation quantity of the curved panel cannot occur, the stability of the shape of the curved panel is ensured, and segment and folding assembly of the curved panel are facilitated.

The present invention provides a method and device for generating an indoor environment map. The method includes: determining a feasible region in a grid map; dividing the feasible region by a gate segmentation algorithm to obtain a first sub-feasible region and a second sub-feasible region ; Processing the second sub-feasible area by a spectral clustering algorithm to obtain multiple topological areas; fusing the gate area, the first sub-feasible area and multiple topological areas and establishing a topological connection relationship to obtain an indoor environment map. This method is a topological segmentation on a grid map. The gate segmentation algorithm reduces the computational load of the topological segmentation, and the spectral clustering algorithm improves the accuracy of the topological segmentation. It inherits the advantages of easy construction of the grid map and realizes The expression of the regional environment category, in the semantic navigation, the planning efficiency of the path is high, and the method of generating the environmental map in the prior art cannot satisfy the technical problem of easy construction and regional segmentation at the same time.

The method for controlling the reactivity of particulate combustible poisons, combustible poison plates and fuel rods provided by the present invention is to set the residual reactivity at the beginning of the core life and the length of the lifetime, and input the residual reactivity and the lifetime of the core at the beginning of its life. In the core reactivity and burnup change model, the parameters of the particulate burnable poison are obtained; the parameters of the particulate burnable poison include particle type, particle diameter, particle volume fraction, particle doping rate and particle porosity; the target particles are selected based on the particle burnable poison parameters Burnable poisons are added to the core to increase the rate of poison burnup, reduce the residue of burnable poisons at the end of life, and facilitate the segmentation of burnable poisons, which is beneficial to the control of the remaining reactivity of the core.

The invention provides a method for assembling a HVAC self-contained computer room, which includes: producing and processing some system components required by the HVAC self-contained computer room according to the drawings surveyed and drawn in advance; The components are packaged and transported to the construction site in sections; and the system components packaged in sections are assembled on site. In view of the problems existing in the related technologies, the object of the present invention is to provide an assembly method of a HVAC self-contained computer room and a HVAC self-contained computer room assembled according to this assembly method, so as to overcome the problems of assembly of the current computer room system. The shortcomings of low work efficiency, long installation period, and waste of materials provide a high-efficiency, material-saving assembly method for the assembly of the computer room system and a HVAC self-contained computer room assembled according to this assembly method.

The present invention relates to a sensor device for detecting dose of radiation received at the sensor device, the sensor device comprising a flexible body having a cross-section being comparatively small relative to the length of the device, a cladding at the flexible body, the cladding converting incoming radiation into visible light, and an optical shape sensing device disposed within the flexible body and configured to determine a shape of the flexible instrument relative to a reference, the shape sensing device configured to collect information based on its configuration to map an intraluminal structure during a procedure. The present invention further relates to a radiation therapy system including such a sensor device and a method of operating a radiation therapy system including such a sensor device.