Abstract: The present disclosure provides a material identification method and a device based on laser speckle and modal fusion, an electronic device and a non-transitory computer readable storage medium. The method includes: performing data acquisition on an object by using a structured light camera to obtain a color modal image, a depth modal image and an infrared modal image; preprocessing the color modal image, the depth modal image and the infrared modal image; and inputting the color modal image, the depth modal image and the infrared modal image preprocessed into a preset depth neural network for training, to learn a material characteristic from a speckle structure and a coupling relation between color modal and depth modal, to generate a material classification model for classifying materials, and to generate a material prediction result in testing by the material classification model of the object.

Abstract: A depth information calculation method and device based on a light-field-binocular system. The method includes obtaining a far-distance disparity map based on binocular information of calibrated input images, setting respective first confidences pixels in the disparity map, and obtaining a first target confidence; detecting the first confidence of a pixel being smaller than a preset value and responsively determining a new disparity value based on light field information of the input images, determining an update depth value based on the new disparity value, and obtaining a second target confidence of the pixel; and combining the far-distance disparity map and a disparity map formed by the new disparity value on a same unit into an index map, combining the first confidence and the first target confidence into a confidence map, optimizing the index and confidence maps to obtain a final disparity map, which is converted to a final depth map.

Abstract: The disclosure provides 3D reconstruction methods and devices. The method includes: obtaining data captured by the camera and data captured by the inertial measurement unit; obtaining a pose of the camera based on the data; obtaining an adjustment value of the pose of the camera and an adjustment value of bias of the inertial measurement unit; updating the pose of the camera based on the adjustment value of the pose of the camera; determining whether the adjustment value of bias of the inertial measurement unit is less than a preset value; in response to the adjustment value of bias of the inertial measurement unit being greater than or equal to the preset value, determining that a current loop for 3-dimensional reconstruction is an error loop; removing the error loop; and constructing a 3-dimensional model for surroundings of the camera based on the updated pose of the camera and remaining loops.

Abstract: Provided are a depth camera based three-dimensional reconstruction method and apparatus, a device and a storage medium. The method includes: acquiring at least two frames of images obtained by capturing a target scenario by a depth camera; determining, according to the at least two frames of images, relative camera poses in response to capturing the target scenario by the depth camera; by adopting a manner of at least two levels of nested screening, determining at least one feature voxel from each frame of image, where each level of screening adopts a respective voxel partitioning rule; fusing and calculating the at least one feature voxel of each frame of image according to a respective relative camera pose of each frame of image to obtain a grid voxel model of the target scenario; and generating an isosurface of the grid voxel model to obtain a three-dimensional reconstruction model of the target scenario.

Abstract: The present disclosure provides a multi-image-based image enhancement method and device, an electronic device and a non-transitory computer readable storage medium. The method includes: aligning a low-resolution target image and a reference image in an image domain; performing, an alignment in a feature domain; and synthesizing features corresponding to the low-resolution target image and features corresponding to the reference image to generate a final output.

Abstract: Provided are a three-dimensional reconstruction method, apparatus and system of a dynamic scene, a server and a medium. The method includes: acquiring multiple continuous depth image sequences of the dynamic scene, where the multiple continuous depth image sequences are captured by an array of drones equipped with depth cameras; fusing the multiple continuous depth image sequences to establish a three-dimensional reconstruction model of the dynamic scene; obtaining target observation points of the array of drones through calculation according to the three-dimensional reconstruction model and current poses of the array of drones; and instructing the array of drones to move to the target observation points to capture, and updating the three-dimensional reconstruction model according to multiple continuous depth image sequences captured by the array of drones at the target observation points.

Abstract: The present disclosure relates to a method and device for generating a finite state automata for recognizing a chemical name in a text, and a recognition method. According to an embodiment of the present disclosure, the method comprises substituting representation constants of categories of character segments appearing in an organic compound name set into the organic compound name set to obtain a conversion name set; updating the conversion name set based on a conversion name segment which repeatedly appears in the conversion name set; and generating the finite state automata based on the updated conversion name set.

Abstract: A packaging structure and method for surface mount integrated circuits reduces electrochemical migration (ECM) problems by including one or more cleaning channels to effectively and efficiently remove flux residue that may otherwise remain lodged in gaps between the surface mount package and the printed circuit board. A cleaning channel may be formed along a bottom surface of the surface mount package (i.e., the surface facing the printed circuit board), or along a portion of a top surface of the printed circuit board. In either case, the inclusion of a cleaning channel enlarges the gap between the bottom surface of the surface mount package and the printed circuit board and creates a path for contaminants to be flushed out during a cleaning process.

Abstract: Systems, methods, and apparatus for sampling images using minimum mean square error subpixel-based down-sampling (MMSE-SD) are presented herein. A partition component can receive a first array of pixels, and divide the first array of pixels into two-dimensional (2-D) blocks of pixels. Further, a sampling component can diagonally down-sample subpixels of a block of the 2-D blocks, and generate a second array of pixels based on the down-sampled subpixels. The sampling component can alternately sample subpixels of adjacent pixels of the block in a diagonal direction, and generate the second array of pixels based on the subpixels. A reconstruction component can create a virtual image based on, at least in part, the second array of pixels. A MMSE-SD component can determine an optimal low resolution image based on, at least in part, respective color components of the virtual image and a high resolution image associated with the first array of pixels.

Abstract: Systems, methods, and apparatus for sampling images using edge detection are presented herein. A gradient component can calculate at least one gradient of a luminance of a block of pixels based on at least one direction; and select a minimum gradient of the at least one gradient of the luminance. Further, a direction component can determine a direction of the block based on a direction of the minimum gradient of the at least one gradient of the luminance. Moreover, a sampling component can alternately select subpixels of the block based on the direction of the block. In addition, a filter component can calculate at least one gradient of a color of a subpixel of the subpixels based on the at least one direction; determine a direction of the subpixel based on the at least one gradient of the color; and filter the subpixels based on the direction of the subpixel.

Abstract: Systems, methods, and apparatus for sampling images using minimum mean square error subpixel-based down-sampling are presented herein. A partition component can be configured to divide a first array of pixels into two-dimensional (2-D) blocks of pixels. A sampling component can be configured to receive a query from a device including information associated with a display of the device; diagonally down-sample subpixels of a block of the 2-D blocks and generate a second array of pixels based on the down-sampled subpixels and the query. The sampling component can communicate at least a portion of the second array to the device based on the query. The information associated with the display can include a dimension associated with the display. Further, sampling component can be associated with a web browser; and the query can include an internet based query.

Abstract: This invention relates to method and apparatus for subpixel-based down-sampling. This invention implements an adaptive filter 140 based on edge detection, which removes visible color fringing artifacts while efficiently retaining sharpness.

Abstract: A solar cell receiver comprising a III-V compound semiconductor solar cell and a diode mounted on a board including a connector for electrically connecting to adjacent receivers. The diode is connected in parallel with the solar cell, for reverse biasing the diode against conductivity during operation of the solar cell in generating solar energy, and the diode is operative to provide a current bypassing the solar cell when the solar cell is damaged or shadowed. The diode has a pair of electrical connector terminals for electrical connection to the solar cell. The connector includes a first receiving section adapted for receiving a first electrical conductor to connect the receiver to adjacent receivers.

Abstract: A solar cell module comprises an array of lenses, corresponding secondary optical elements and corresponding solar cell receivers. The solar cell receiver includes a solar cell having one or more III-V compound semiconductor layers, a diode coupled in parallel with the solar cell and connector for coupling to other solar cell receivers. The module includes a housing that supports the lenses such that each lens concentrates solar energy onto its respective solar cell.

Abstract: A solar cell receiver comprising a solar cell having one or more III-V compound semiconductor layers, a diode coupled in parallel with the solar cell and operable to be forward-biased in instances when the solar cell is not generating above a threshold voltage, a coating substantially encapsulating the diode, an undercoating that substantially eliminates any air gap between the anode and cathode of the diode, and a connector adapted to couple to other solar cell receivers.

Abstract: Systems, methods, and apparatus for sampling images using minimum mean square error subpixel-based down-sampling are presented herein. A partition component can be configured to divide a first array of pixels into two-dimensional (2-D) blocks of pixels. A sampling component can be configured to receive a query from a device including information associated with a display of the device; diagonally down-sample subpixels of a block of the 2-D blocks and generate a second array of pixels based on the down-sampled subpixels and the query. The sampling component can communicate at least a portion of the second array to the device based on the query. The information associated with the display can include a dimension associated with the display. Further, sampling component can be associated with a web browser; and the query can include an internet based query.

Abstract: Systems, methods, and apparatus for sampling images using minimum mean square error subpixel-based down-sampling (MMSE-SD) are presented herein. A partition component can receive a first array of pixels, and divide the first array of pixels into two-dimensional (2-D) blocks of pixels. Further, a sampling component can diagonally down-sample subpixels of a block of the 2-D blocks, and generate a second array of pixels based on the down-sampled subpixels. The sampling component can alternately sample subpixels of adjacent pixels of the block in a diagonal direction, and generate the second array of pixels based on the subpixels. A reconstruction component can create a virtual image based on, at least in part, the second array of pixels. A MMSE-SD component can determine an optimal low resolution image based on, at least in part, respective color components of the virtual image and a high resolution image associated with the first array of pixels.

Abstract: Systems, methods, and apparatus for sampling images using edge detection are presented herein. A gradient component can calculate at least one gradient of a luminance of a block of pixels based on at least one direction; and select a minimum gradient of the at least one gradient of the luminance. Further, a direction component can determine a direction of the block based on a direction of the minimum gradient of the at least one gradient of the luminance. Moreover, a sampling component can alternately select subpixels of the block based on the direction of the block. In addition, a filter component can calculate at least one gradient of a color of a subpixel of the subpixels based on the at least one direction; determine a direction of the subpixel based on the at least one gradient of the color; and filter the subpixels based on the direction of the subpixel.

Abstract: The present invention discloses a structure improvement of an LED lamp which is assembled by plural LED modules. Plural light scattering plates and plural reflectors on a lamp shade of the LED lamp can be covered respectively on the LED modules to scatter and reflect light emitted by the LEDs, such that uniformity and brightness of the lamp set can be improved, an electricity charge can be saved and the lamp set can be environmental friendly.

Abstract: A solar cell receiver comprising a solar cell having one or more III-V compound semiconductor layers, a diode coupled in parallel with the solar cell and operable to be forward-biased in instances when the solar cell is not generating above a threshold voltage, a coating substantially encapsulating the diode, an undercoating that substantially eliminates any air gap between the anode and cathode of the diode, and a connector adapted to couple to other solar cell receivers.