Detection of artificial pornographic pictures based on multiple features and tree mode

来源期刊:中南大学学报(英文版)2018年第7期

论文作者:李芳芳 毛星亮 刘熙尧 ZOU Bei-ji(邹北骥)

文章页码:1651 - 1664

Key words:multiple feature; artificial pornographic pictures; picture detection; gradient boost decision tree

Abstract: It is easy for teenagers to view pornographic pictures on social networks. Many researchers have studied the detection of real pornographic pictures, but there are few studies on those that are artificial. In this work, we studied how to detect artificial pornographic pictures, especially when they are on social networks. The whole detection process can be divided into two stages: feature selection and picture detection. In the feature selection stage, seven types of features that favour picture detection were selected. In the picture detection stage, three steps were included. 1) In order to alleviate the imbalance in the number of artificial pornographic pictures and normal ones, the training dataset of artificial pornographic pictures was expanded. Therefore, the features which were extracted from the training dataset can also be expanded too. 2) In order to reduce the time of feature extraction, a fast method which extracted features based on the proportionally scaled picture rather than the original one was proposed. 3) Three tree models were compared and a gradient boost decision tree (GBDT) was selected for the final picture detection. Three sets of experimental results show that the proposed method can achieve better recognition precision and drastically reduce the time cost of the method.

Cite this article as: MAO Xing-liang, LI Fang-fang, LIU Xi-yao, ZOU Bei-ji. Detection of artificial pornographic pictures based on multiple features and tree mode [J]. Journal of Central South University, 2018, 25(7): 1651–1664. DOI: https://doi.org/10.1007/s11771-018-3857-x.

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