Install ghostsript and magick (from source depending on your linux distribution) and pdflatex for evaluation
https://www.imagemagick.org/script/install-source.php
sudo pip install -r requirements.txt
sudo apt-get install texlive-latex-base
sudo apt-get install texlive-latex-extra
sudo apt-get install ghostscript
sudo apt-get install libgs-dev
wget http://www.imagemagick.org/download/ImageMagick.tar.gz
tar -xvf ImageMagick.tar.gz
cd ImageMagick-7.*
./configure --with-gslib=yes
make
sudo make install
sudo ldconfig /usr/local/lib
We use Harvard preprocessing scripts that can be found at http://lstm.seas.harvard.edu/latex/
First, crop + downsampling of images + group by similar shape
python scripts/preprocessing/preprocess_images.py --input-dir data/formula_images --output-dir data/images_processed
Second, parse formulas with KaTeX parser
python scripts/preprocessing/preprocess_formulas.py --mode normalize --input-file data/im2latex_formulas.lst --output-file data/norm.formulas.lst
Third, filter formulas
python scripts/preprocessing/preprocess_filter.py --filter --image-dir data/images_processed --label-path data/norm.formulas.lst --data-path data/im2latex_train.lst --output-path data/train_filter.lst
python scripts/preprocessing/preprocess_filter.py --filter --image-dir data/images_processed --label-path data/norm.formulas.lst --data-path data/im2latex_validate.lst --output-path data/val_filter.lst
python scripts/preprocessing/preprocess_filter.py --filter --image-dir data/images_processed --label-path data/norm.formulas.lst --data-path data/im2latex_test.lst --output-path data/test_filter.lst
Edit the config file in configs/
python main.py