Commands:
Warning, sudo may be required!
cat /dir/to/image/<imagename>.ntfs-ptcl-img* | gzip -d -c | partclone.ntfs -r -C --restore_raw_file -s - -o <imagename>.img
Example:
cat /path/to/image/sda3.ntfs-ptcl-img* | gzip -d -c | partclone.ntfs -r -C --restore_raw_file -s - -o sda3.img
This will restore the clonezilla backup to this one .img file, which you could then simply mount via the following command:
mount sda3.img /mnt