Xi ZHANG (張熙)

0110200_Ⅱ類（融合系）, 0110000_情報理工学域, The University of Electro-Communications

Electric circuits

Communication theory

signal processing

Numerical computation

image processing

電子回路

通信理論

信号処理

数値計算

画像処理

ジャーナル論文 - rm_published_papers: Scientific Journal 査読済み

Image Adjustment for Multi-exposure Images Based on Convolutional Neural Networks

by Xi ZHANG

公開済 01/01/2022

IEICE Trans. Information and Systems, E105-D, 1, 123 - 133

図書

Wavelet Theory: Wavelet Filter Banks Using Allpass Filters

by Xi ZHANG

公開済 30/11/2020

ジャーナル論文 - rm_published_papers: Scientific Journal 査読済み

Design of two channel biorthogonal graph wavelet filter banks with half-band kernels

by Xi ZHANG

公開済 01/09/2017

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, E100A, 9, 1743 - 1750

ジャーナル論文 - rm_published_papers: Scientific Journal 査読済み

High Dynamic Range Image Compression with Improved Logarithmic Transformation

by Xi ZHANG

公開済 01/01/2017

IEICE Communications Express, 6, 1, 17 - 21

High dynamic range (HDR) images have been developed to have almost the same dynamic range as human eye, but the huge amount of data brings a problem in storage and transmission. To compress HDR images, an efficient coding method using logarithmic transformation had been proposed in [4]. In this letter, we improve the logarithmic transformation and then derive the optimal parameter to minimize the coding error in HDR region. It is experimentally confirmed that the improved coding method has less coding error in HDR region than other existing methods.

ジャーナル論文 - rm_published_papers: Scientific Journal 査読済み

A New Class of Hilbert Pairs of Almost Symmetric Orthogonal Wavelet Bases

by Xi ZHANG

公開済 05/2016

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E99A, 5, 884 - 891