Runlength encoding of quantized DCT coefficients
Viresh Ratnakar, Ephraim Feig, et al.
IS&T/SPIE Electronic Imaging 1995
A block-based gradient descent search (BBGDS) algorithm is proposed in this paper to perform block motion estimation in video coding. The BBGDS evaluates the values of a given objective function starting from a small centralized checking block. The minimum within the checking block is found, and the gradient descent direction where the minimum is expected to lie is used to determine the search direction and the position of new checking block. The BBGDS is compared with full search (FS), three-step search (TSS), one-at-a-time search (OTS), and new three-step search (NTSS). Experimental results show that the proposed technique provides competitive performance with reduced computational complexity. © 1996 IEEE.
Viresh Ratnakar, Ephraim Feig, et al.
IS&T/SPIE Electronic Imaging 1995
Virat Agarwal, David A. Bader, et al.
Computer Science - Research and Development
Elliot Linzer, Ephraim Feig
Mathematics of Computation
Liang-Jie Zhang, Lurng-Kuo Liu, et al.
Multimedia Systems