Mumtaz Anwar Hussin, Farhana Ahmad Poad, and Ariffuddin Joret. “A Comparative Study on Improvement of Image Compression Method Using Hybrid DCT - DWT Techniques With Huffman Encoding for Wireless Sensor Network Application”. International Journal of Integrated Engineering, vol. 11, no. 3, Sept. 2019, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4660.