The latest video coding standard H.264/AVC significantly increases video compression efficiency but also increases computation complexity. Intra prediction is an important part in H.264/AVC encoder and it’s also time consuming. This paper proposes a fast block type decision algorithm which can reduce intra prediction’s computation complexity with slight PSNR reduction. The relation between intr...

Variable block size used for inter coding is one of the key technologies in H.264/AVC. When different objects contained in the same macroblock have different motions, smaller block sizes probably achieve better predictions. However, this feature results in extremely high computational complexity when all the block sizes are considered to decide a best one. This paper proposes a new inter mode d...

An important architectural design decision aaecting the performance of coherent caches in shared-memory multiprocessors is the choice of block size. There are two primary factors that innuence this choice: the reference behavior of application programs and the remote access band-width and latency of the machine. Several studies have shown that increasing the block size can lower the miss rate a...

We investigate the spectrum for frames with block size four, and discuss several applications to the construction of other combinatorial designs. Our main result is that a frame of type hu, having blocks of size four, exists if and only if u ≥ 5, h ≡ 0 mod 3 and h(u − 1) ≡ 0 mod 4, except possibly where (i) h = 9 and u ∈ {13, 17, 29, 33, 93, 113, 133, 153, 173, 193}; (ii) h ≡ 0 mod 12 and u ∈ {...