Chengdu Xgimi Technology Co., Ltd.

Chengdu University of Technology

Veritas Technologies LLC

University of Electronic Science and Technology of China

Xin Wang

Bo Zhong

Shi Xiao

Fei Wang

Chen Zhang

Yingsong Jia

Yubin Gong

Yiquan Ma

Huaguo Wen

Zhaoyun Duan

Zhanliang Wang

Shengyan Pu

Hui Ma

Chao Ma

Yixin Dong

Shaohui Wang

Jintong Liang

Guangbin Zhang

Xiangye Kong

Zhong Ning

Lizao Zhang

Peng Wang

Shibin Liu

Yi Chen

Gaoqiang Dai

Yu Liu

Yuan Zhong

Wei Chen

Shuai Zhang

Dong Yu

Gang Zhou

Wei Yan

Wenbin Tang

Bolin Zhang

Yunchuan Zeng

Pei An

Jinsong Chen

Tao Zhang

Bowen Li

Qiang Tang

M Chen

Jinqing Yu

Jing Nie

Ya Zhang

Jianjun He

Chun Su

Hongshuang Dong

Xiaoxiang Gu

Tongzhen Dai

Fengxi He

Xinyi Li

Qing Zhou

Shifeng Li

Xirui Zhan

This application provides an ultra-short-throw picture and screen alignment method which includes that: a first lateral projected image and a second lateral projected image are acquired by two cameras when an ultra-short-throw projector projects a picture; image processing is performed on the first lateral projected image and the second lateral projected image to obtain a projection position in a projection area and a screen position in a screen area; and the picture is adjusted according to the screen position and the projection position, so that a position of an adjusted projection picture and a target position coincide. In this application, the projected images are acquired by the two cameras, thereby ensuring acquisition of complete images.

Ultra-short-throw picture and screen alignment method and apparatus, ultra-short-throw projection device, and medium

Disclosed is a projector keystone correction method, including: obtaining first coordinate values of a plurality of position points on a projective plane through an RGBD (Red, Green, Blue-Depth) camera in a first coordinate system; determining second coordinate values of the position points according to a predetermined conversion relation and the first coordinate values in a second coordinate system; and using an included angle between a fitted plane obtained by fitting according to the second coordinate values of the plurality of position points and a coordinate plane of the second coordinate system to achieve keystone correction.

Projector keystone correction method, apparatus and system, and readable storage medium

The disclosure relates to a staggered electrode bio-electro-Fenton groundwater circulation well system, including a groundwater circulation well, a water pumping and injecting assembly and an in-well bio-electro-Fenton assembly. The water pumping and injecting assembly is configured to realize water pumping and injection between different screening sections of the groundwater circulation well. The bio-electro-Fenton assembly arranged in a first screening section of the groundwater circulation well includes at least one electrode device. A cathode and an anode of the electrode device form a spatially staggered arrangement according to different distribution areas. According to the disclosure, the spatially staggered arrangement of the cathode and the anode, the influence of oxygen on an anaerobic environment of an anode chamber in the electrode device is greatly reduced while ensuring the cathode takes oxygen as an electron acceptor, and the constructed bio-electro-Fenton system can accelerate the decomposition of organic pollutants in the groundwater circulation well.

Staggered electrode bio-electro-Fenton groundwater circulation well system, and electro-Fenton assembly

The present disclosure relates to the technical field of compensation for projection thermal defocusing, and the embodiments specifically disclose a bidirectional compensation method and apparatus for projection thermal defocusing, and a readable storage medium. The bidirectional compensation method for projection thermal defocusing provided in the present disclosure comprises determining whether to proceed to a definition value determination step according to whether a similarity value of two latest projected picture images satisfies a preset similarity value requirement; by means of the method of proceeding to first-direction thermal defocusing compensation or second-direction thermal defocusing compensation by comparing the magnitude of definition values of the latest two projected picture images, non-perception compensation for projection thermal defocusing is achieved, without using a specified compensation direction and a specific focusing map, and a compensation effect is achieved by means of real-time analysis of projected pictures, the operation being convenient and suitable for widespread popularization.

Bidirectional compensation method and apparatus for projection thermal defocusing, and readable storage medium

The invention relates to a method for microbial remediation of underground water petroleum hydrocarbon contamination by regulating soil buffer capability, which comprises detecting the soil particle size of contaminated site soil, dividing the contaminated site soil into coarse-grained soil and fine-grained soil; dividing the contaminated site soil into high buffer capacity soil and low buffer capacity soil; and adjusting the composition and ratio of a biostimulant solution added to the contaminated site soil based on the classification of the contaminated site soil. The detecting step includes classifying soil with a particle size between 0.075 mm and 60 mm and a mass greater than or equal to 50% of the total mass as coarse-grained soil; and classifying soil with a particle size not greater than 0.075 mm and a mass greater than or equal to 50% as fine-grained soil.

Method for remediating petroleum hydrocarbon contamination in groundwater

The present invention provides a multifunctional rock mechanics tester, pertaining to the technical field of mechanics tester, consisting of a base; wherein a power mechanism is mounted on the top of the base, two tension testing mechanisms are arranged on the power mechanism in an up-and-down symmetrical way, a clamping mechanism is mounted on each tension testing mechanism, a rock testing block is clamped between the two clamping mechanisms. The present invention realizes the tension and pressure testing of the rock test block through the arrangement of tension testing mechanism and pressure testing mechanism, thus improving the functionality of the present mechanics tester, which not only reduces the testing cost, but also effectively decreases the occupied space; the present invention solves the problem that the traditional mechanics tester can only complete one kind of test when it is used.

Multifunctional rock mechanics tester

Disclosed is a multi-shaft pressurized rock mechanics tester, pertaining to the technical field of rock mechanics testing devices, comprising a base; the base is of an integral rectangular structure, and welded six vertical support plates symmetrically at the front and back ends, a-shaped bracket plate is horizontally welded at the top of the six vertical support plates ('' is a Chinese character, read as “Ri”), and a bracket plate is rotatably installed on the top section of the three rear vertical support plates, pressed against the-shaped bracket plate; the left and right sides of the base are symmetrically welded with four vertical bracing plates, an I-shaped installation plate is welded on the top of the four vertical bracing plates, four hydraulic cylinders are locked, fixed and hoisted on the bottom of the I-shaped installation plate with screws.

Multi-shaft pressurized rock mechanics tester

The disclosure relates to the technical field of projection auto-focusing, and embodiments particularly disclose a projection focusing method, a projection focusing apparatus, a projector, and a readable storage medium. According to the projection focusing method provided by this application, an initial position of a focused motor is roughly determined based on a current projection distance, a focusing direction is determined according to the current projection distance and a projection distance corresponding to the current motor position, a position of a clearest projection picture can be found by traversing a few motor positions, and the speed and precision of projection focusing are greatly increased.

Projection focusing method, projection focusing apparatus, projector, and readable storage medium

This application provides an ultra-short-throw picture and screen alignment method which includes the steps: acquiring an image by a wide-angle camera and performing positioning according to the image to obtain a projection position when a current projection picture of an ultra-short-throw projector covers a screen; adjusting a size and a position of the current projection picture according to a position of the screen and the projection position, so that the position of the adjusted projection picture is overlapped with a target position.

Ultra-short-throw picture and screen alignment method and apparatus, and storage medium

The embodiments of the disclosure relates to the technical field of projection adjustment. Embodiments specifically disclose a self-adaptive adjustment method and adjustment system for brightness of a projection apparatus. In the disclosure, ambient illuminance and a projection distance of the projection apparatus are obtained by controlling an illuminance sensor and a distance sensor, and a functional relationship among the ambient illuminance, projection plane illuminance and the projection distance is found through analysis and modeling of a large amount of data.

Self-adaptive adjustment method and adjustment system for brightness of projection apparatus

The disclosure discloses a layout design method, chip and terminal of power device, wherein the non-top metal layout design: the metal is routed along the first direction and several metal wires that fully occupy the available area of the die unit are thereby obtained, and the wiring properties of the metal wires are sequentially changed at intervals, making the source ends and the drain ends of the device are alternately distributed at intervals, and the metal routing in two or more layers of non-top metal are arranged vertically; the top metal layout design: the source end region and drain end region in the top metal are formed into sheets independently and the pad is arranged in the top metal region; eventually realize the interconnection of metal layers and complete the layout design. The disclosure adopts a criss-cross design between non-top metals, thereby the device has a smaller parasitic resistance value; the removal of the stack-up design can reduce the metal layer design and save the cost; the source end and drain end regions in the top metal are designed into sheets to ensure the adequacy of the interconnection between the metal layers and further improve the reliability of the device.

Layout design method, chip and terminal of power device

The present application provides a projector, including: a projector cabin; an opto-mechanical lens arranged at one end of the projector cabin; a sliding cover arranged in front of the opto-mechanical lens; a target sensor configured to collect signals from one end of the projector cabin where the opto-mechanical lens is arranged and one end of the projector cabin away from the opto-mechanical lens; and a driving mainboard connected to the target sensor and configured to control a working state of the projector based on the signals, wherein the working state includes a power-on state and a power-off state.

Projector and method for controlling a projector to power on or off

The disclosure relates to the field of power electronic technology, and discloses an electrothermal co-simulation method, system and terminal for the power electronic system, comprising the following steps: carrying out electrical simulation on the power semiconductor device and its power circuit, and junction temperature simulation on the power semiconductor device; acquiring real-time electrical parameters in the electrical simulation process; suspending the electrical simulation in a steady state until the steady state of the electrical simulation is changed; and calculating the junction temperature according to the real-time electrical parameters and in combination with the real-time loss of the power semiconductor device in the electrical simulation process. The disclosure dynamically controls the electrical simulation state, thereby reducing the calculation amount in the simulation process and achieving the purpose of accelerating the simulation convergence.

Electrothermal co-simulation method, system and terminal for the power electronic system

Disclosed herein is the creation of probabilistic data structures for container reclamation. One method involves retrieving a segment object list of a data container and creating a probabilistic data structure. The segment object list comprises a plurality of segment objects, the data container comprises the plurality of segment objects and a plurality of data objects, and each segment object of the plurality of segment objects comprises a hash value determined by performing a hashing function on a corresponding data object of the plurality of data objects. The creating includes, for each segment object in the segment object list, identifying an element of a plurality of elements of the probabilistic data structure using a hash value of the each segment object and setting the element to indicate the segment object references a corresponding data object of the plurality of data objects.

Container reclamation using probabilistic data structures

Disclosed herein are methods, systems, and processes to perform container reclamation using probabilistic data structures. A hash value associated with a data segment and stored in a data container is received. Elements in a probabilistic data structure are identified using one or more portions of the hash value and element values are determined for each element. In response to a determination that the element values indicate that the segment object should be maintained, the segment object is maintained during compaction of the data container.

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Sichuan, China

Xin Wang