Incorrect image size

[duckzland]

After following the instructions posted at this site:

1. Make sure that the source is 512x512:

cd ~/solseum-nft-generator/input/assets

find . -name "*.png" -exec file {} + | more

./6-patches/10-patched_right.png:     PNG image data, 512 x 512, 8-bit/color RGBA, non-interlaced
./6-patches/75-patched_both.png:      PNG image data, 512 x 512, 8-bit/color RGBA, non-interlaced
./6-patches/10-patched_left.png:      PNG image data, 512 x 512, 8-bit/color RGBA, non-interlaced
./6-patches/5-no_patched.png:         PNG image data, 512 x 512, 8-bit/color RGBA, non-interlaced
.....

2. Fire the build command:

python3 main.py -g 10000 -p 500 -w 1000 -r 1

3. Check the results:

cd ~/solseum-nft-generator/output/nfts/public_mint_assets/

find . -name "*.png" -exec file {} + | more

./88.png:  PNG image data, 1600 x 1600, 8-bit/color RGBA, non-interlaced
./118.png: PNG image data, 1600 x 1600, 8-bit/color RGBA, non-interlaced
./54.png:  PNG image data, 1600 x 1600, 8-bit/color RGBA, non-interlaced
./14.png:  PNG image data, 1600 x 1600, 8-bit/color RGBA, non-interlaced
./109.png: PNG image data, 1600 x 1600, 8-bit/color RGBA, non-interlaced
./200.png: PNG image data, 1600 x 1600, 8-bit/color RGBA, non-interlaced
.....

The images size is 1600x1600 instead of 512x512..
 Python problem or need extra configuration to force build 512x512 image?