148 results about "Loop closure" patented technology

A lens cover covers a camera lens or a projection lens formed in the frame of a computer display or in the body of a personal digital assistant or mobile telephone. The cover is movable to allow the lens to operate, yet allow the cover to remain with the device. One cover pivots around a pivot point to cover or uncover the lens. Another cover hinges in order to cover or uncover the lens. Another cover slides back and forth. Another cover hangs upon a hook located above the lens. Another cover is a suction cup applied over the lens. Another cover slides back and forth hanging on the top edge of the computer display. The cover may be fixed in place using gravity, friction, a snap, hook and loop closures, suction, or a ZIPLOC-type mechanism. The cover or its attaching means may be fixed to the computer or telephone using a self adhesive.

Mobile camera localization using depth maps is described for robotics, immersive gaming, augmented reality and other applications. In an embodiment a mobile depth camera is tracked in an environment at the same time as a 3D model of the environment is formed using the sensed depth data. In an embodiment, when camera tracking fails, this is detected and the camera is relocalized either by using previously gathered keyframes or in other ways. In an embodiment, loop closures are detected in which the mobile camera revisits a location, by comparing features of a current depth map with the 3D model in real time. In embodiments the detected loop closures are used to improve the consistency and accuracy of the 3D model of the environment.

The invention discloses an image appearance based loop closure detecting method in monocular vision SLAM (simultaneous localization and mapping). The image appearance based loop closure detecting method includes acquiring images of the current scene by a monocular camera carried by a mobile robot during advancing, and extracting characteristics of bag of visual words of the images of the current scene; preprocessing the images by details of measuring similarities of the images according to inner products of image weight vectors and rejecting the current image highly similar to a previous history image; updating posterior probability in a loop closure hypothetical state by a Bayesian filter process to carry out loop closure detection so as to judge whether the current image is subjected to loop closure or not; and verifying loop closure detection results obtained in the previous step by an image reverse retrieval process. Further, in a process of establishing a visual dictionary, the quantity of clustering categories is regulated dynamically according to TSC (tightness and separation criterion) values which serve as an evaluation criterion for clustering results. Compared with the prior art, the loop closure detecting method has the advantages of high instantaneity and detection precision.

A laminate material for hook-and-loop closures, comprising a carrier film and a textile substrate laminated onto the carrier film. The textile substrate has loops on its surface that are suitable for connecting with hook-and-loop hooks, wherein the carrier film and the textile substrate are not connected over their entire area. A method for producing a laminate material for hook-and-loop closures comprises applying an adhesive to a carrier film in a pattern that is composed of adhesive areas and adhesive-free regions, applying a material web of a textile substrate to the side of the carrier film provided with adhesive to form a two-ply web, the textile substrate having loops on its surface that are suitable for connecting with hook-and-loop hooks; and passing the two-ply web through a roller nip of a pair of rollers, which presses the carrier film and the textile substrate together.

Layered assembly or composite comprising a film and a knitted or non-woven fabric fixed on the film, the knitted fabric, or non-woven fabric, being formed from a base formed from threads, or from filaments, and from loops issuing from the base, characterised in that at least part of the threads, or filaments, of the base are anchored in the material of the film, and the film has a weight less than 20 g / m2,in particular between 5 and 15 g / m2.

A laminate material element (1) for a hook and loop closure, particularly a diaper closure, has a carrier film (2) and a textile material (3) laminated onto the carrier film (2), which has a surface structure that is suitable for forming a connection with the hooks of a hook and loop closure. The carrier film (2) and the textile material (3) are bonded together over their entire surface in an edge region that extends along the edges of the laminate material element and has the shape of a frame. A bond between the carrier film (2) and the textile material (3) that does not cover the entire surface is provided in the region within this frame.

Footwear having a plurality of removable and interchangeable hook and loop closure straps permitting the wearer to alter the appearance of the footwear and extend the useful life of the footwear. The removable straps include a detachable coupling device with a cooperating detachable coupling device attached to the footwear. An attachment means with an opening located on the opposing side of the footwear allows the removable strap to be pulled back on itself to the desired degree of footwear closure and secured with the hook and loop material. As a result of the fastening process, the display area of the strap is presented in an aesthetically pleasing manner.

A baby swaddle fashioned from breathable mesh material has a pocket for receiving a baby. The swaddle may also include a left and right outer wing for wrapping around the baby. One or more of the wings are cinched and released through a non-hook and loop closure apparatus to avoid waking up a sleeping baby.

An electronic device tracks its motion in an environment while building a three-dimensional visual representation of the environment that is used to correct drift in the tracked motion. A motion tracking module estimates poses of the electronic device based on feature descriptors corresponding to the visual appearance of spatial features of objects in the environment. A mapping module builds a three-dimensional visual representation of the environment based on a stored plurality of maps, and feature descriptors and estimated device poses received from the motion tracking module. The mapping module provides the three-dimensional visual representation of the environment to a localization module, which identifies correspondences between stored and observed feature descriptors. The localization module performs a loop closure by minimizing the discrepancies between matching feature descriptors to compute a localized pose. The localized pose corrects drift in the estimated pose generated by the motion tracking module.

A decorative holder for holding potpourri or decorative items having hinged opening at the top, side, or bottom, the hinged opening capable of being secured closed, for example, by a latch or hook and loop closure, and capable of holding materials therein. The framed holder is formed by a plurality of frame supports that form a base and a lid and side frame supports and simulating the shape of one or more natural products such as a fruit, vegetable, nut, seed, animal, reptile, sea creature, star, or ball, box, or other similar object. The plurality of frame supports may further include a framework that is woven in and about the holder to secure the decorative items. The materials to be secured in the holder may include decorative items; botanicals, natural and / or synthetic; food stuffs; personal effects; and the like, all having a size and shape larger than any aperture in the holder.

An absorbent sanitary product wearable as a pant-like garment includes a central body including an absorbent portion defining a crotch portion of the product and two side panels extending laterally from the opposite ends the central body to define respective portions of the waist line of the product so that a pair of complementary side panels is provided at each side of the central body. Each side panel has a distal edge connected to a distal edge of the complementary side panel via a refastenable hook-and-loop closure including complementary hook and loop elements. In each pair of complementary side panels one panel carries at its surface facing inwardly of the product either of the hook and loop elements of the hook-and-loop closure. The other panel has its distal edge folded over itself inwardly of the product to form an end loop portion and a marginal rim sandwiched between the two complementary side panels. The marginal rim carries at its surface facing toward the other panel the other of the complementary elements of the hook-and-loop closure.

A plush teddy bear having an interior chest cavity for receiving decorative attachment devices therein. The plush teddy bear includes a head, a body, arms and legs; and the body has a chest cavity with a built-in storage compartment for receiving decorative attachment devices therein selected from the group consisting of ribbons, hook and loop fastening ties, and a stretch band loop. The built-in storage compartment includes a compartment wall and closure means such as closure flaps having hook and loop closure fastening tabs, a zipper, buttons, or male and female closure snaps for enclosing the decorative attachment devices within the built-in storage compartment. The compartment wall is used for attaching a first end of the decorative attachment devices within the built-in storage compartment using fastening means thereto. The plush teddy bear includes a second end of the decorative attachment devices for withdrawing the decorative attachment devices from within the built-in storage compartment for fastening the second end(s) of the decorative attachment devices about a box or a package in order to decorate the box or package with the plush teddy bear on the box or package for ornamentation purposes.

A multipurpose, ergonomic, adjustable head, neck, and face pillow for use in sleeping and resting positions, both supine and upright. The pillow includes a contoured pillowcase that is used to adjust for pillow firmness. The pillowcase has a hook-and-loop closure that is used to adjust the pillow's firmness and thickness. The contoured pillowcase can be made of materials including cotton, satin, water resistant fabric, etc. The pillow insert is generally rectangular in shape with a U-shaped offset cutout along one side that can be rotated to accommodate a variety of sleeping and resting positions. The pillow insert can be filled with an array of soft loose fill including polyester fill, down, down alternative, wool, etc.

A method for the production of a laminate material for hook and loop closures, particularly for diaper closures, comprises laminating a textile material onto a carrier film having a surface structure that is suitable for forming a connection with the hooks of a hook and loop closure. The textile material is not connected with the carrier film over its entire area, and the textile material forming the cover layer of the laminate material is brushed after lamination.

A urine collection device for males suffering from incontinence comprises a collection bag worn under an inner garment. The collection bag is sized to receive the entire content of a full bladder. The open end of an integral input sleeve comprises an elastic band and hook-and-loop closure members as a means of ensuring a comfortable fit, a tight seal, and a secure retention of the device. The internal portion of the collection bag comprises absorbent, jellying, and disinfecting materials. An adhesive strip provides a means of removably attaching the collection bag onto the inside of an inner garment. The device is disposable, made of flexible bio-degradable material and is intended to be removed and discarded after each use.

A system of placing a vest with a rear hook and loop fastener on an infant, laying the child on a changing pad having a surface hook and loop fastener, and attaching the vest to the changing pad by fastening the hook and loop fasteners together, securely holding the infant onto a changing pad while changing a diaper. The changing pad has a flap that when closed, covers the surface hook and loop fastener when the system is not in use, to prevent snagging other clothing. The vest that can be placed on the child prior to and in preparation for changing a diaper when the child is standing, seated upright, or lying down. The vest has a front hook and loop closure for easy opening and closing by the user. The vest optionally includes tethered toys to amuse the child during diaper changing.

An airtight cover assembly includes a side panel folded around goods on a pallet presenting top and bottom opening, a top panel with a plurality of pouches positioned on an inside surface above a vented rigid plate, and a bottom panel encloses the pallet. Hook and loop closures secure the panel assembly. Panel inner and outer surfaces of a poly-vinyl chloride material bonded to an aluminum laminate enclose multiple layers of foam.

The present disclosure provides a visual assisted distance-based SLAM method for a mobile robot, and a mobile robot using the same. The method includes: obtaining distance data frames and visual data frames, each of the visual data frames corresponds to one of the distance data frames, performing a loop closure detection based on a current visual data frame in the visual data frames to find a matched visual data frame; calculating a relative pose between the current visual data frame and the matched visual data frame; and performing a loop closure optimization on pose data of one or more frames between the current visual data frame and the matched visual data frame based on the relative pose. In the above-mentioned manner, the present disclosure can improve the accuracy of mapping and / or realizing fast relocalization.

Disclosed a multi-station scanning global point cloud registration method based on graph optimization, including acquiring multi-station original three-dimensional point cloud data; based on initial registration of targets, completing initial registration of point cloud data at adjacent stations by virtue of the target at each angle of view; calculating a point cloud overlap area at adjacent angles of view, and calculating areas of overlap regions of adjacent point cloud by a gridded sampling method; constructing a fine registration graph structure, and constructing a fine registration graph by taking point cloud data of each station as a node of the graph and taking an overlap area of the point cloud data of adjacent stations as a side of adjacent nodes of the graph structure; and based on loop closure fine registration based on graph optimization, gradually completing point cloud fine registration of the whole aircraft according to a specific closure sequence.

A phase jump amplitude and timing controller is used in a fiber optic gyroscope for suppressing color noise. The phase jump amplitude and timing controller inserts a phase / voltage jump into the feedback signal of the loop closure electronics of the fiber optic gyroscope. This phase / voltage jump breaks the repeated pattern of the drive signal. The IOC time-dependent characteristics are totally eliminated by the randomized feedback signal because no repeated signal is applied to the IOC. The randomized amplitude is preferably within the full ±π phase such that the optical errors average to zero. A fixed frequency higher than the interested spectral region can shift the color noise to higher frequency. A randomized frequency can spread the color noise over full spectrum, and totally eliminate the RDS. In other words, the color noise caused by the nonlinearity of the driving circuit and IOC spreads out over a wide range of spectrum such that no distinct frequency peaks are apparent in the spectral domain.

A method includes initializing an inertial measurement unit (IMU) at a starting location and gathering acceleration and rotational data as the IMU is moved to an intermediate location. An indication that the IMU is at the intermediate location is received. The method includes gathering acceleration and rotational data as the IMU is moved to an ending location and calculating a position of the ending location based on a known position of the starting location and the acceleration data. The method includes calculating corrected acceleration data based on a difference between the calculated position of the ending location and a known position of the ending location, and calculating a position of the intermediate location based on the corrected acceleration data are provided.

A vision-aided inertial navigation system determines navigation solutions for a traveling vehicle. A navigation solution module analyzes image sensor poses and estimated inertial navigation solutions to produce a time sequence of system navigation solution outputs that represent changing locations of the traveling vehicle. A loop closure detector performs a two-threshold image classification to classify an incoming navigation image as novel, loop-closing, or neither, and the navigation solution module resets the navigation solution output to represent a previous location when the loop closure detector classifies an incoming navigation image as loop-closing.

A graphite powder suitable for a negative electrode material of a lithium ion secondary battery which assures a high discharging capacity not lower than 320 mAh / g is to be manufactured at a lower cost. Specifically, a graphite powder containing 0.01 to 5.0 wt % of boron and having a looped closure structure at an end of a graphite c-planar layer on the surface of a powder, with the density of the interstitial planar sections between neighboring closure structures being not less than 100 / μm and not more than 1500 / μm, and with d002 being preferably not larger than 3.3650 Å, is manufactured by (1) heat-treating a carbon material pulverized at an elevated speed before or after carbonization for graphization at temperature exceeding 1500° C. or by (2) heat-treating the carbon material pulverized before or after carbonization at a temperature exceeding 1500° C. forgraphization and subsequently further heat-treating the graphized material at a temperature exceeding a temperature of the oxidating heat treatment and the heat treatment in the inert gas.

The invention relates to an annular coil winding machine. The annular coil winding machine comprises a workbench, a controller, a winding execution mechanism, a coil adjustment mechanism, a coil clamping and supporting mechanism and a coil rotation mechanism, a front and back adjustment component which is arranged on the coil adjustment mechanism is installed on the workbench, and a transverse adjustment component which is arranged on the coil adjustment mechanism is installed on the front and back adjustment component; the coil clamping and supporting mechanism is installed on the transverseadjustment component, and three rubber wheels are arranged on the coil clamping and supporting mechanism; the coil rotation mechanism is used for driving the three rubber wheels to rotate; the windingexecution mechanism comprises a supporting plate, a counter, a reel, a wire clamping component and a wire storage ring opening-closing component, and the supporting plate is installed on the workbench; the wire storage ring opening-closing component, the wire clamping component, the reel and the counter are installed on the supporting plate separately; the controller is installed on the workbenchand is connected with a winding motor, the counter and the coil rotation mechanism. The annular coil winding machine has the advantages of being high in production efficiency, is beneficial to development of enterprises and can precisely control the number of winding turns, so that the quality of the product is guaranteed.

A light weight soft fly case for holding fishing flies that can be clipped on or removed via an integrated rotatable clip, to a belt, harness, suspender or pocket that makes them readily accessible with one hand to the fisherman. The light weight soft fly case would be rectangular in shape, be made from nylon and neoprene, with a one piece case construction, and with a one handed hook and loop closure. The light weight soft fly case would include a nylon gusset hinge limiting the opening to a 90 degree angle for easy fly selection. The light weight soft fly case would include an attached but removable ripple foam insert for providing a surface upon which fishing flies might be secured. The light weight soft fly case may include a transparent cover for easy fly identification.