captcha_solver/tools/reduce-noise.sh

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#!/usr/bin/env bash
for file in *; do
if [ -f "$file" ]; then
if [[ $file == *.jpeg ]]; then
convert "$file" -threshold 50% -define connected-components:verbose=true -define connected-components:area-threshold=5 -define connected-components:mean-color=true -connected-components 4 "$file"
fi
fi
done