Abstract
There are mathematical formula images or other images in scientific and technical documents or on web pages, and mathematical formula images are classified as either containing only mathematical formulas or formulas interspersed with other elements, such as text and coordinate diagrams. To screen and collect images containing mathematical formulas for others to study or for further research, a model for screening images of mathematical formulas based on feature correlation enhancement is proposed. First, the Feature Correlation Enhancement (FCE) module was designed to improve the correlation degree of mathematical formula features and weaken other features. Then, the strip multi-scale pooling (SMP) module was designed to solve the problem of non-uniform image size, while enhancing the focus on horizontal formula features. Finally, the loss function was improved to balance the dataset. The accuracy of the experiment was 89.50%, which outperformed the existing model. Using the model to screen images enables the user to screen out images containing mathematical formulas. The screening of images containing mathematical formulas helps to speed up the creation of a database of mathematical formula images.
Highlights
In view of the fact that convolutional neural networks can extract deep features, and the attention mechanism can focus on the information that needs attention in the task, this paper proposes a mathematical formula image screening model based on feature correlation enhancement
Images are randomly crawled from web pages or scientific and technical documents and manually pre-classified into two categories, one for images containing elements of mathematical formulas and one for images not containing elements of mathematical formulas
The feature correlation enhancement (FCE) module was designed with the aim of improving the contribution of mathematical formula features in the self-attention feature maps
Summary
Mathematical language is an international, universal language that is not restricted by regions or languages. The main form of mathematical language is mathematical formulas. Mathematical formulas are often the quintessence of technical documents. There are a large number of images of mathematical formulas with research value in web pages or scientific and technological documents. They are mixed with other images, and crawling the page image directly will result in obtaining all the images. If only images containing mathematical formulas need to be obtained, further screening is required
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