Yes you need the NAA authorization to capture drone images, record video, or perform an Aerial Survey in Portugal. The rules for capturing images and making videos are regulated by other legislation, namely Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of individuals with regard to the processing of personal data and on the free movement of such data (National Data Protection Commission - www.cnpd.pt), and by the authorizations to be requested from the National Aeronautical Authority/Portuguese Air Force (www.aan.pt).