Computed tomography (CT) imaging has become an important form of medical imaging due to its low cost and high efficiency. However, the decline in image quality causes serious interference to diagnosis and prognosis. The limited performance of a single classifier cannot meet the requirements of high-precision CT image quality classification. To address this issue, a method based on Stacking ensemble learning was designed for artifact recognition. Based on classification diversity and individual classifier performance, random forest (RF), back propagation neural network (BPNN), and Inception v3, all of which are heterogeneous, were selected as the base classifiers. Extreme gradient boosting (XGBoost) was used as the meta-learner. The experimental results show that the accuracy of this method reaches 99.2%, which ensures the classification effect of the model and can meet the high accuracy requirements for CT image quality classification under the condition of an unbalanced dataset.
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