Search Results for author: Zitian Zhang

Found 5 papers, 0 papers with code

CT Synthesis with Conditional Diffusion Models for Abdominal Lymph Node Segmentation

no code implementations26 Mar 2024 Yongrui Yu, HanYu Chen, Zitian Zhang, Qiong Xiao, Wenhui Lei, Linrui Dai, Yu Fu, Hui Tan, Guan Wang, Peng Gao, Xiaofan Zhang

To address these problems, we present a pipeline that integrates the conditional diffusion model for lymph node generation and the nnU-Net model for lymph node segmentation to improve the segmentation performance of abdominal lymph nodes through synthesizing a diversity of realistic abdominal lymph node data.

Denoising Image Generation +4

Adaptive Modulation for Wobbling UAV Air-to-Ground Links in Millimeter-wave Bands

no code implementations13 Apr 2022 Songjiang Yang, Zitian Zhang, Jiliang Zhang, Xiaoli Chu, Jie Zhang

Based on the designed detectors, we propose an adaptive modulation scheme to maximize the average transmission rate under imperfect CSI by optimizing the data transmission time subject to the maximum tolerable BEP.

Consistent Depth Prediction under Various Illuminations using Dilated Cross Attention

no code implementations15 Dec 2021 Zitian Zhang, Chuhua Xian

In this paper, we aim to solve the problem of consistent depth prediction in complex scenes under various illumination conditions.

Depth Estimation Depth Prediction

Impact of Rotary-Wing UAV Wobbling on Millimeter-wave Air-to-Ground Wireless Channel

no code implementations14 Jul 2021 Songjiang Yang, Zitian Zhang, Jiliang Zhang, Jie Zhang

Our contributions of this paper lie in: i) modeling the wobbling process of a hovering RW UAV; ii) developing an analytical model to derive the channel temporal autocorrelation function (ACF) for the millimeter-wave RW UAV A2G link in a closed-form expression; and iii) investigating how RW UAV wobbling impacts the Doppler effect on the millimeter-wave RW UAV A2G link.

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