Research Journal of Information Technology1815-74322151-7959Science International10.3923/rjit.2014.27.45El AakifMohamed BelkouchSaid M`rabet HassaniMoha 1201461The multistandard video and image codec using a single platform is the recent trend in multimedia technologies, in which the Two-Dimensional forward and inverse Discrete Cosine Transform (2-D DCT/IDCT) is used as a transform core. Therefore, the 2-D DCT/IDCT core should support multiple transforms and that to be implemented with low cost hardware, while keeping the required performances for real time applications. In this study, a fast multistandard DCT/IDCT generalized algorithms are developed with low complexity for 2x2, 4x4 and 8x8 forward/inverse transforms in H.264/Advanced Video Coding (AVC), 8x8 forward/inverse transform in Audio Video Coding Standard (AVS), 4x4 and 8x8 forward/inverse transforms in VC-1 and 8x8 forward/inverse discrete cosine transform in JPEG and MPEG-1/2/4. The hardware implementation of these generalized algorithms is performed with low cost hardware, in which the hardware sharing design and shared factorization of coefficient multiplications are used. Furthermore the multiplications are avoided by using additions and shifts. The multistandard 2-D DCT/IDCT is achieved with the proposed 1-D DCT/IDCT sharing architecture and a robust transpose buffer. These pipelined hardware architectures are described in VHDL hardware language, synthesized, verified and implemented on low cost FPGA. The implementation results of the proposed multistandard 2-D DCT/IDCT show a decrease of computational complexity by 29.7% of additions while the number of shifts remains almost the same and an increase of maximum frequency and throughput by 18.2% in comparison with other previous design.]]>Chang, T.S., C.S. Kung and C.W. Jen,200010439447ISO and IEC,20092009Fan, C.P. and G.A. Su,200815926929Fan, C.P., C.H. Fang, C.W. Chang and S.J. Hsu,201158517521Gao, W., C. Reader, F. Wu, Y. He and L. Yu et al.,20042004Huang, C.Y., L.F. Chen and Y.K. Lai,20082008pp: 2124Hwangbo, W. and C.M. Kyung,201012157167Hyesook, L., V. Piuri and E.E. Swartzlander,20004912971309Lee, S. and K. Cho,200844274275Li, Y., Y. He and S.L. Mei,2008501932Malvar, H.S., A. Hallapuro, M. Karczewicz and L. Kerofsky,200313598603Marpe, D., T. Wiegand and S. Gordon,20052005pp: 593596Park, J.H., S.H. Lee, K.S. Lim, J.H. Kim and S. Kim,20062006pp: 53475350Qi, H., Q. Huang and W. Gao,201057551555SMPTE Standard,20062006Su, G.A. and C.P. Fan,20085512491253ISO and IEC,19931993Video Coding Standard,19951995ISO/IEC 14496-2,20042004Wiegand, T., G. Sullivan and A. Luthra,20032003pp: 1156Wien, M.,200313604613Yu, L., S. Chen and J. Wang,200924247262