Welcome to the December 2020 issue of the IEEE Transactions on Visualization and Computer Graphics (TVCG) . This issue contains selected papers accepted at the IEEE International Symposium on Mixed and Augmented Reality (ISMAR). The conference was scheduled to take place in Recife, Porto de Galinhas (Brazil) but was moved to a virtual event due to the global coronavirus pandemic. This virtual conference took place from November 9-13, 2020.

中文翻译：

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主编和副主编的致辞

欢迎阅读2020年12月号 IEEE可视化和计算机图形学事务（TVCG） 。本期包含在IEEE混合现实和增强现实国际研讨会（ISMAR）上接受的部分论文。会议原定在巴西加里尼亚斯港累西腓举行，但由于全球冠状病毒大流行而转移到虚拟会议。该虚拟会议于2020年11月9日至13日举行。