Image captioning (IC) systems aim to generate a text description of the salient objects in an image. In recent years, IC systems have been increasingly integrated into our daily lives, such as assistance for visually-impaired people and description generation in Microsoft Powerpoint. However, even the cutting-edge IC systems (e.g., Microsoft Azure Cognitive Services) and algorithms (e.g., OFA) could produce erroneous captions, leading to incorrect captioning of important objects, misunderstanding, and threats to personal safety. The existing testing approaches either fail to handle the complex form of IC system output (i.e., sentences in natural language) or generate unnatural images as test cases. To address these problems, we introduce Recursive Object MElting (Rome), a novel metamorphic testing approach for validating IC systems. Different from existing approaches that generate test cases by inserting objects, which easily make the generated images unnatural, Rome melts (i.e., remove and inpaint) objects. Rome assumes that the object set in the caption of an image includes the object set in the caption of a generated image after object melting. Given an image, Rome can recursively remove its objects to generate different pairs of images. We use Rome to test one widely-adopted image captioning API and four state-of-the-art (SOTA) algorithms. The results show that the test cases generated by Rome look much more natural than the SOTA IC testing approach and they achieve comparable naturalness to the original images. Meanwhile, by generating test pairs using 226 seed images, Rome reports a total of 9,121 erroneous issues with high precision (86.47%-92.17%). In addition, we further utilize the test cases generated by Rome to retrain the Oscar, which improves its performance across multiple evaluation metrics.

Wed 19 Jul

Displayed time zone: Pacific Time (US & Canada) change

15:30 - 17:00
ISSTA Online 4: Testing and Analysis of DL SystemsTechnical Papers at Smith Classroom (Gates G10)
Chair(s): Elena Sherman Boise State University
15:30
10m
Talk
A Tale of Two Approximations: Tightening Over-Approximation for DNN Robustness Verification via Under-Approximation
Technical Papers
Zhiyi Xue East China Normal University, Si Liu ETH Zurich, Zhaodi Zhang East China Normal University, Yiting Wu East China Normal University, Min Zhang East China Normal University
DOI
15:40
10m
Talk
In Defense of Simple Techniques for Neural Network Test Case Selection
Technical Papers
Shenglin Bao Fudan University, Chaofeng Sha Fudan University, Bihuan Chen Fudan University, Xin Peng Fudan University, Wenyun Zhao Fudan University
DOI
15:50
10m
Talk
ROME: Testing Image Captioning Systems via Recursive Object Melting
Technical Papers
BoXi Yu Chinese University of Hong Kong, Zhiqing Zhong Chinese University of Hong Kong, Jiaqi Li Chinese University of Hong Kong, Yixing Yang Chinese University of Hong Kong, Shilin He Microsoft Research, Pinjia He Chinese University of Hong Kong
DOI
16:00
10m
Talk
ACETest: Automated Constraint Extraction for Testing Deep Learning Operators
Technical Papers
Jingyi Shi Institute of Information Engineering at Chinese Academy of Sciences; University of Chinese Academy of Sciences, Yang Xiao Institute of Information Engineering at Chinese Academy of Sciences; University of Chinese Academy of Sciences, Yuekang Li University of New South Wales, Yeting Li Institute of Information Engineering at Chinese Academy of Sciences; University of Chinese Academy of Sciences, DongSong Yu Zhongguancun Laboratory, Chendong Yu Institute of Information Engineering at Chinese Academy of Sciences; University of Chinese Academy of Sciences, Hui Su Institute of Information Engineering at Chinese Academy of Sciences; University of Chinese Academy of Sciences, Yufeng Chen Institute of Information Engineering at Chinese Academy of Sciences; University of Chinese Academy of Sciences, Wei Huo Institute of Information Engineering at Chinese Academy of Sciences
DOI
16:10
10m
Talk
Latent Imitator: Generating Natural Individual Discriminatory Instances for Black-Box Fairness Testing
Technical Papers
Yisong Xiao Beihang University, Aishan Liu Beihang University; Institute of Dataspace, Li Tianlin Nanyang Technological University, Xianglong Liu Beihang University; Institute of Dataspace; Zhongguancun Laboratory
DOI
16:20
10m
Talk
CoopHance: Cooperative Enhancement for Robustness of Deep Learning Systems
Technical Papers
Quan Zhang Tsinghua University, Yongqiang Tian University of Waterloo, Yifeng Ding University of Illinois at Urbana-Champaign, Shanshan Li National University of Defense Technology, Chengnian Sun University of Waterloo, Yu Jiang Tsinghua University, Jiaguang Sun Tsinghua University
DOI
16:30
10m
Talk
Back Deduction Based Testing for Word Sense Disambiguation Ability of Machine Translation Systems
Technical Papers
Jun Wang Nanjing University, Yanhui Li Nanjing University, Xiang Huang Nanjing University, Lin Chen Nanjing University, Xiaofang Zhang Soochow University, Yuming Zhou Nanjing University
DOI
16:40
10m
Talk
CydiOS: A Model-Based Testing Framework for iOS Apps
Technical Papers
Shuohan Wu Hong Kong Polytechnic University, Jianfeng Li Xi’an Jiaotong University, Hao Zhou Hong Kong Polytechnic University, Yongsheng Fang Beijing University of Posts and Telecommunications, Kaifa ZHAO Hong Kong Polytechnic University, Haoyu Wang Huazhong University of Science and Technology, Chenxiong Qian University of Hong Kong, Xiapu Luo Hong Kong Polytechnic University
DOI