http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
An Efficient Architecture for Spiral-Type Motion Estimation for H.264/AVC
Naoyuki Hirai,Takahiro Kato,Tian Song,Takashi Shimamoto 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
New features of motion compensation, such as variable block size and multiple reference frames are introduced in H.264/AVC. However, it induces significant complexity increase. In this paper, an efficient architecture for spiral-type ME is proposed. First, we propose a hardware-friendly spiral search order. Then, an improved processing element (PE) architecture for ME is proposed to achieve the proposed search order. The improved PE enables the shift of the reference pixel data to top, bottom, right, and left by four input and output ports. Moreover, the parallel calculation architecture to calculate all block size with the SAD of 4×4 is introduced in the proposed architecture. As a result of hardware implementation, the hardware cost is about 145k gates. Maximum clock frequency is 134㎒ in the case of FPGA(Xilinx Vertex5) implementation.
( Akihiro Koga ),( Toshiyuki Matsui ),( Noritaka Takatsu ),( Yasumichi Takada ),( Masahiro Kishi ),( Yutaka Yano ),( Takahiro Beppu ),( Yoichiro Ono ),( Kazeo Ninomiya ),( Fumihito Hirai ),( Takashi N 대한장연구학회 2018 Intestinal Research Vol.16 No.2
Background/Aims: Decreased trough levels of infliximab (TLI) and antibodies to infliximab (ATI) are associated with loss of response (LOR) in Crohn’s disease. Two prospective studies were conducted to determine whether TLI or ATI better correlates with LOR (Study 1), and whether TLI could become a predictor of mucosal healing (MH) (Study 2). Methods: Study 1 was conducted in 108 patients, including those with LOR and remission to compare ATI and TLI in discriminating the 2 conditions based on receiver operating characteristic (ROC) curve analyses. Study 2 involved 35 patients who were evaluated endoscopically. Results: In Study 1, there were no differences between the 2 assays in ROC curve analyses; the TLI cutoff value for LOR was 2.6 μg/mL (sensitivity, 70.9%; specificity, 79.2%), and the ATI cutoff value was 4.9 μg/mL (sensitivity, 65.5%; specificity, 67.9%). The AUROC (area under the ROC curve) of TLI was greater than that of ATI. AUROC was useful for discriminating between the 2 conditions. In Study 2, the TLI was significantly higher in the colonic MH group than in the non-MH group (2.7 μg/mL vs. 0.5 μg/mL, P=0.032). Conclusions: TLI is better than ATI for clinically diagnosing LOR, and a correlation was observed between TLI and colonic MH. (Intest Res 2018;16:223-232)