Abstract: A five-axis linkage synchronous tool path interpolation method and system, which utilizes the strict proportional coefficient relationship between points, control points and parameters on the first-order derivative curve of the spline curve, more accurate tool axis path curve interpolation points from the parameters of the tool tip path curve are calculated. There is no need to calculate the tool axis path curve interpolation points according to interval synchronization. It is not affected by the shape consistency of the tool tip path curve and the tool axis path curve.

Abstract: Provided is a method for processing images. The method includes: acquiring a plurality of original sub-images acquired by a plurality of cameras in a camera array; converting first pixel coordinates of each pixel in each original sub-image in an image coordinate system into target pixel coordinates in a target plane coordinate system; determining a region pixel value of each sub-region according to a correspondence between the target pixel coordinates of each pixel in each original sub-image and each sub-region in the target plane; and determining a spliced image in the target plane based on the region pixel value of each sub-region.

Abstract: An eye gaze tracking method, apparatus and system are provided, which belong to the technical field of image processing. The eye gaze tracking method includes: capturing, by at least two cameras, frames of facial images when a viewer views display screen; segmenting a current frame of facial image with pre-trained eye detection model to obtain an image for left and right eyes; calculating a similarity between the current frame of facial image and each of previous N frames of facial images; if the similarity between the current frame of facial image and each of previous N frames of facial images is less than the preset threshold, detecting a position on display screen at which the eyes of the viewer gaze with pre-trained eye detection model. Embodiments of the present disclosure can improve accuracy and efficiency of eye gaze tracking.

Abstract: An eye gaze tracking method, apparatus and system are provided, which belong to the technical field of image processing. The eye gaze tracking method includes: capturing, by at least two cameras, frames of facial images when a viewer views display screen; segmenting a current frame of facial image with pre-trained eye detection model to obtain an image for left and right eyes; calculating a similarity between the current frame of facial image and each of previous N frames of facial images; if the similarity between the current frame of facial image and each of previous N frames of facial images is less than the preset threshold, detecting a position on display screen at which the eyes of the viewer gaze with pre-trained eye detection model. Embodiments of the present disclosure can improve accuracy and efficiency of eye gaze tracking.

Abstract: A time optimal speed planning method and system based on constraint classification. The method comprises: reading path information and carrying out curve fitting to obtain a path curve; sampling the path curve, and considering static constraint to obtain a static upper bound value of a speed curve; considering dynamic constraint, and combining the static upper bound value of the speed curve to construct a time optimal speed model; carrying out convex transformation on the time optimal speed model to obtain a convex model; and solving the convex model based on a quadratic sequence planning method to obtain a final speed curve. The system comprises: a path curve module, a static constraint module, a dynamic constraint module, a model transformation module and a solving module.

Abstract: A three-dimensional measuring method and system for modulating three-dimensional codes at periodic edges are disclosed, the method includes: step A according to a number of phase levels and a composition rule of the three-dimensional codes, converting the number of phase levels into three-dimensional codes, modulating the three-dimensional codes to periodic edges; step B generating N pieces of modulated three-dimensional codes on periodic edges to form a sinusoidal fringe pattern, according to a N-step phase shift method; step C projecting N pieces of fringe patterns to a surface of an object, collecting the deformed N pieces of fringe patterns on the object surface; step D solving a wrapping phase and a mean intensity of N pieces of fringe patterns; step E since the mean intensities of the adjacent periodic edge codes are different, extracting edge coordinates from the mean intensities by using an edge extraction method.

Abstract: A time optimal speed planning method and system based on constraint classification. The method comprises: reading path information and carrying out curve fitting to obtain a path curve; sampling the path curve, and considering static constraint to obtain a static upper bound value of a speed curve; considering dynamic constraint, and combining the static upper bound value of the speed curve to construct a time optimal speed model; carrying out convex transformation on the time optimal speed model to obtain a convex model; and solving the convex model based on a quadratic sequence planning method to obtain a final speed curve. The system comprises: a path curve module, a static constraint module, a dynamic constraint module, a model transformation module and a solving module.

Abstract: An orthopedic drill guide assembly is disclosed. The assembly can include an elongated shaft having a proximal end and a distal end, and a first guide member that includes a bonecontacting surface and a second surface opposite the bone-contacting surface. The first guide member is provided at the distal end of the elongated shaft. The first guide member includes one or more guide holes that are configured for receiving a drill bit at an angle that can vary from 0 to 30 degrees from orthogonal of the bone-contacting surface.

Abstract: Bone cutting guides and bone cutting guide assemblies are disclosed that are useful for preparing a bone in a joint space, such as those in mid-foot region joints, to prepare the cartilage end of the bone for receiving cartilage repairing implants such as hydrogel implants.

Abstract: A microwave plasma gasification and recycle integrated system for domestic garbage. The system is fixed in a garbage truck compartment with a garbage inlet, and includes a closed chain-plate type feeder, a shredding machine, and a closed magnetic separator which are connected in sequence. The magnetic separator is further separately connected to a microwave plasma gasification furnace and a metal recycle tank. The microwave plasma gasification furnace is further separately connected to a stink processor, a plastic residue recycle tank, an integrated sewage treatment device, and a residue smashing machine. The stink processor is connected to a gas recycle tank. Both the residue smashing machine and the integrated sewage treatment device are connected to an aerobic fermentation tank. The aerobic fermentation tank is connected to a decomposed material recycle tank by means of a decomposed material forming and screening machine.

Abstract: A microwave plasma gasification and recycle integrated system for domestic garbage. The system is fixed in a garbage truck compartment with a garbage inlet, and includes a closed chain-plate type feeder, a shredding machine, and a closed magnetic separator which are connected in sequence. The magnetic separator is further separately connected to a microwave plasma gasification furnace and a metal recycle tank. The microwave plasma gasification furnace is further separately connected to a stink processor, a plastic residue recycle tank, an integrated sewage treatment device, and a residue smashing machine. The stink processor is connected to a gas recycle tank. Both the residue smashing machine and the integrated sewage treatment device are connected to an aerobic fermentation tank. The aerobic fermentation tank is connected to a decomposed material recycle tank by means of a decomposed material forming and screening machine.

Abstract: An on-column detector for electrophoresis samples based on the principles of potential gradient detection, in which the electrodes for detection are physically isolated from the electrophoretic separation process, but maintains the same electrical potential as the corresponding interior of the electrophoretic separation channel. Potential gradient detection is used to measure the applied electrical field at two points within the electrophoretic channel during electrophoresis. When sample components with conductivity different from the electrophoretic medium passes between these two points, it causes a change in the potential gradient between the two points, which would be sensed by the sensing electrodes of the detector and registered by a data acquisition system. The apparatus can make use of conventional separation channel as well as separation channels on microchips.