During the academic atmosphere construction month, the students of the school actively participated in the Chinese College Computer Design Competition. Dr. Richen Liu, the tutor of class 1703, supervised three undergraduate teams to be promoted in the competition of school level and achieved the qualification to participate in the provincial competition. Before that, Dr. Liu had supervised many undergraduates to carry out a number of scientific research activities, including applying for research projects, submitting papers and applying for software copyright (one of the innovations and entrepreneurship projects of undergraduates).
On May 18, in order to improve the work submitted to the provincial competition, Dr. Liu and 9 undergraduates participating in the competition discussed in detail in Room 314, Mingli Building. During the discussion, Dr. Liu further summarized guidance and improvement advices. The students carefully modified and improved the works in order to achieve better results in the provincial competition.
The title of the competition submitted by students of grade 17 and 18 (Lijun Wang, Hailong Wang and Min Gao) is "The Visualization of Epidemic Medical Volume Data based on VR Headset". The project combines scientific visualization rendering schemes with virtual reality technology, rendering 2-D slice data into 3-D volume data and displays it in VR headset. The joystick and 3-D somatosensory interaction detection of VR headset provides basic interaction functions, giving users with immersive exploration environment and improves the possibility of interaction in the exploration process. The system includes a transfer function editor, which supports multi-mode interactions, slice extractions and other functions, as shown in Figure 1. In the immersive environment provided by the system, medical experts can better observe the lung lesions of patients and take out a reasonable treatment plan according to this, or assist clinical drug development and test.
The second work named "Large Scale Collaborative Interactive Visualization of Medical Volume Data" submitted by students of grade 17 and 19 (Sitong Fang, Rongtao Qian and Chuyu Zhang). It provides a visual exploration interface for medical experts, so that experts with different background domain knowledge could participate the illustrative visualization while fully taking advantages of their prior knowledge. They can play different roles in individual editing and interactive exploration of data according to their knowledge. Taking the CT scanning image of lung as an example, pulmonary nodule experts, alveolar experts, pulmonary virus experts, vascular experts and trachea experts can cooperate together from their respective fields, exploring the same medical volume data simultaneously, adjusting the transfer function of different parts to get the information they want, and selecting the slice of interest to better explore the medical data, as shown in Figure 2.
The third work titled "The Visualization of Epidemic Evolution Data Based on WebGL" submitted by grade 17 and 19 students (Tianxing Zhou, Yu Zhu and Xiaohan Wang). The data are extracted by Python crawler and manual picked by people, the domestic and international data of epidemic are sorted out and rendered through WebGL rendering. In addition, in order to facilitate users to view data in detail, they add interactive functions. Users can use the mouse operation to view variables in detail or filter regions, as shown in Figure 3. From data collection to final implementation, the whole work was completed by team members themselves. In early period, the national data was collected from the official website of Health Care Commission and the international data was collected from the WHO official website. During the period, rendering distance, coordinate transformation and other calculations are all encoded and implemented by team members (undergraduates) themselves.
From the beginning of winter vacation to the morning of 1st May (the first day of May Day holiday), the students in the research group frequently reported the progress of their work to Dr. Liu online and submitted weekly research progress reports. After returning to school, students attend weekly group meeting to report progress and discuss the problems and challenges they encountered in. In particular, at the beginning of the winter vacation in early February, an SCI indexed paper of JCR Q1 submitted by an undergraduate (a third-year student) in the research group was accepted and has been officially published recently, which mainly uses the 3-D interactive device leap motion to visualize and explore the medical DTI brain imaging data, as shown in Figure 4.
Fig. 4. The snapshots of a paper submitted by a undergraduate student
After revising the above-mentioned paper at the beginning of winter vacation, Dr. Liu supervised the students of the research group to engage in various scientific research activities online, including the project application of the research group and students (provincial innovation plan project of graduate students), as well as the submission of papers and software copyright (for the undergraduates of the innovations and entrepreneurship projects), etc. During the whole epidemic period, Dr. Liu can be seen in the QQ groups online at 2-3 a.m. almost every day to show the current paper writing progress, proofreading progress, modification of student project application and modification instructions, he often assigns some of coding improvement tasks to all participating students for the next day at that time in the QQ group, etc. In addition, during the May Day holiday, Dr. Liu was invited to participate in the video course production of an online public course of the university; the key is that he did not teach the course this semester.
Fig. 5. Three times of group meeting after returning school: discuss research progress report and conduct multiple rehearsals
The DTVIS Research Group led by Dr. Richen Liu welcome the undergraduates who are honest and trustworthy, have a strong sense of responsibility and strong programming ability to join the research group. For the contact information of Dr. Liu, please refer to the official website of the college or email: firstname.lastname@example.org. The study atmosphere of the students in the research group is strong and harmonious, and all the students are excellent. For example, many students have multiple research papers, attending international conferences for many times, and have national journal papers; the winner of Best Survey Paper Award in 2019; the winners of the prize in ACM ICPC Asia regional competition; achieving funding project for school talents in 2019 with class A (ranking No. 3 in the whole university). Besides, the students newly enrolled in the group got achievements ranked No. 1, No. 3 and No. 5 (200 in total) in their grade.