Monochrome Image Cryptography. Radioelektronika, 17th International Conference, IEEE, 2007, pp. 1–6 and According to different orientations, the 2-D directional DCT-DWT hybrid transform can be applied in denoising ultrasound images.Xin-ling Wen, Yang Xiao. The 2-D Directional DCT-DWT Hybrid Transform and Its Application in Denoising Ultrasound Image. Signal Processing. ICSP 2008. 9th International Conference, Page(s): 946–949 3-D DCT can also be used to transform video data or 3-D image data in watermark embedding schemes in transform domain.Jinwei Wang, Shiguo Lian, Zhongxuan Liu, Zhen Ren, Yuewei Dai, Haila Wang. Image Watermarking Scheme Based on 3-D DCT.Industrial Electronics and Applications, 2006 1ST IEEE Conference, pp. 1–6Jin Li, Moncef Gabbouj, Jarmo Takala, Hexin Chen. Direct 3-D DCT-to-DCT Resizing Algorithm for Video Coding. Image and Signal Processing and Analysis, 2009. ISPA 2009. Proceedings of 6th International Symposium
