Tsinghua University

Nuctech Company Limited

International Business Machines Corporation

Zhi Guo Deng

Zhiqiang Chen

Yuanjing Li

Yuxiang Xing

Lan Zhang

Li Ni Zhang

Wei Zhang

Ziran Zhao

Qi Cheng Li

Yinong Liu

Liang Li

Xiao Ling Chen

Jun Li

Wanlong Wu

Yulan Li

Hao Jiang

Li Zhang

Le Shen

Hewei Gao

Qing Yu Pei

Tao Xue

Huan Wu

Shun Xian Wu

Jianqiang Fu

Xiaoyue Guo

Xiaocui Zheng

Kaixin Huang

Embodiments of the present disclosure provide a Bayesian image denoising method based on a distribution constraint of noiseless images from a distribution of noisy images. The method includes: determining a distribution constraint of noiseless images from a distribution of noisy images; and performing Bayesian denoising on noisy images based on the distribution constraint of noiseless images.

Bayesian image denoising method based on distribution constraint of noisy images

An example operation may include one or more of connecting, by a service discovery node, to a blockchain configured to store workloads and stakes of a plurality of endorser nodes, receiving, by the service discovery node, a discovery query that contains an endorsement policy from a user node, generating, by the service discovery node, cryptographic sortition parameters based on the endorsement policy, sending, by the service discovery node, the cryptographic sortition parameters to the plurality of the endorser nodes, collecting, by the service discovery node, sortition labels from the plurality of the endorser nodes, the sortition labels generated based on the sortition parameters, determining, based on the sortition labels, a set of the endorser nodes from the plurality of the endorser nodes that qualify the endorsement policy, and providing, by the service discovery node, identifiers of the set of the endorser nodes to the user node for an endorsement of a user transaction proposal.

Peer partitioning

An X-ray detection method and an X-ray detector are provided. The X-ray detection method according to embodiments of the present disclosure includes: dividing an energy range of photons emitted by an X-ray source into a number N of energy windows, where N is an integer greater than 0; obtaining a weighting factor for each of the number N of energy windows based on linear attenuation coefficients of a substance of interest and a background substance of an imaging target; obtaining a weighting factor matrix for M output channels of an X-ray detector based on the weighting factor for each of the number N of energy windows, where M is an integer greater than 0; and obtaining output results of the M output channels based on the weighting factor matrix and numbers of photons having an energy range falling into individual energy windows of the number N of energy windows.

X-ray detection method and X-ray detector

The invention provides a semiconductor detector, and the semiconductor detector comprises a semiconductor crystal, a cathode, an anode and at least one ladder electrode; the semiconductor crystal comprises a top surface, a bottom surface and at least one side; the cathode, the anode and the ladder electrode are conductive thin films deposited on a surface of the semiconductor crystal; the cathode is disposed on the bottom surface of the semiconductor crystal, the anode is disposed on the top surface of the semiconductor crystal, the ladder electrode is disposed on the at least one side of the semiconductor crystal; and the ladder electrode comprises a plurality of sub-electrodes. As compared to the prior art, the semiconductor detector can improve the energy resolution.

Semiconductor detector

The present invention discloses a radiation detector, an imaging device and an electrode structure thereof, and a method for acquiring an image. The radiation detector comprises: a radiation sensitive film, a top electrode on the radiation sensitive film, and an array of pixel units electrically coupled to the radiation sensitive film. Each pixel unit comprises: a pixel electrode (which is configured to collect a charge signal in a pixel area of the radiation sensitive film), a storage capacitor, a reset transistor, a buffer transistor, a column strobe transistor, and a row strobe transistor. The column strobe transistor and the row strobe transistor are connected in series between the buffer transistor and the signal line, and transfer the voltage signal of the corresponding pixel unit in response to a column strobe signal and a row strobe signal. The radiation detector may be used for, for example, X-ray digital imaging.

Radiation detector, imaging device and electrode structure thereof, and method for acquiring an image

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Beijing, China

Zhi Guo Deng