http://scitation.aip.org/ Optical Engineering Letters http://link.aip.org/link/?JOE/50/120502/1&agg=rss Feng Shao, Gang-Yi Jiang, Mei Yu, and Fu-Cui Li<br/> In this letter, a novel optimized view synthesis distortion model is proposed for bit allocation in three-dimensional video coding. The proposed model separates the view synthesis distortion into two independent terms, and the two terms are modeled respectively by quadratic distortion models. Finall ... [Opt. Eng. 50, 120502 (2011)] published Thu Dec 8, 2011. http://link.aip.org/link/?JOE/50/120501/1&agg=rss Jong Jin Lee, Kwon-Seob Lim, Jongdeog Kim, Seihyoung Lee, and Hyun Seo Kang<br/> A novel 10-Gbps bidirectional optical subassembly (BOSA) comprised of a 1577 nm electroabsorptive modulated laser (EML) transmitter optical subassembly (TOSA) and 1270 nm avalanche photodiode (APD) receiver optical subassembly (ROSA) was developed. Here, a 10-Gbps microdevice compatible two-window f ... [Opt. Eng. 50, 120501 (2011)] published Tue Nov 29, 2011. http://link.aip.org/link/?JOE/50/110501/1&agg=rss Li-hui Zou, Jie Chen, and Juan Zhang<br/> In this paper, a novel quantitative assessment approach for image mosaicing algorithms is proposed by evaluating the quality of an output mosaic image and comparing with the input images. Five evaluation indicesentropy, clarity, registration error, peak signal-to-noise ratio, and structural similari ... [Opt. Eng. 50, 110501 (2011)] published Thu Nov 3, 2011. http://link.aip.org/link/?JOE/50/110503/1&agg=rss Minh Vo, Zhaoyang Wang, Long Luu, and Jun Ma<br/> In many machine vision applications, a crucial step is to accurately determine the relation between the image of the object and its physical dimension by performing a calibration process. Over time, various calibration techniques have been developed. Nevertheless, the existing methods cannot satisfy ... [Opt. Eng. 50, 110503 (2011)] published Thu Nov 3, 2011. http://link.aip.org/link/?JOE/50/110502/1&agg=rss Zhi-Guo Qu, Ping Wang, Ying-Hui Gao, and Peng Wang<br/> A speed up technique for the SUSAN edge detector based on random sampling is proposed. Instead of sliding the mask pixel by pixel on an image as the SUSAN edge detector does, the proposed scheme places the mask randomly on pixels to find edges in the image; we hereby name it randomized SUSAN edge de ... [Opt. Eng. 50, 110502 (2011)] published Thu Nov 3, 2011. http://link.aip.org/link/?JOE/50/100504/1&agg=rss Luis Coelho, Jens Kobelke, Kay Schuster, Jose L. Santos, and Orlando Frazao<br/> A multimode interferometer based-fiber optic sensor with a silica tube section aimed to measure refractive index (RI) variations of surrounding liquids is presented. The sensing head is a silica tube section fusion spliced to single mode fibers operating in transmission. In the splice regions tapers ... [Opt. Eng. 50, 100504 (2011)] published Fri Oct 21, 2011. http://link.aip.org/link/?JOE/50/100502/1&agg=rss Xiaodong Lu and Peide Han<br/> A method for designing narrow-band reflecting filters has been proposed and it can be easily used to design the reflectance spectrum shapes of multilayer structures by turning the optical thicknesses of layers from regular into irregular. In this paper, we report two design examples of such narrow-b ... [Opt. Eng. 50, 100502 (2011)] published Tue Oct 18, 2011. http://link.aip.org/link/?JOE/50/100503/1&agg=rss Marcus Grosse, Martin Schaffer, Bastian Harendt, and Richard Kowarschik<br/> The field of image-based shape measurements using structured illumination has been an active research area for several decades now. A lot of different methods are widely used e.g. for industrial inspection, surveillance as well as multimedia purposes. Usually, short measurement times and high corres ... [Opt. Eng. 50, 100503 (2011)] published Tue Oct 11, 2011. http://link.aip.org/link/?JOE/50/100501/1&agg=rss Zeyu Sun, Yunfeng Peng, and Keping Long<br/> Transparent optical networks (TON) are becoming increasingly attractive, but transparency introduces security threats, e.g., intrachannel crosstalk attack, to optical networks. In this letter, three attack scenarios, i.e., attack propagation within an optical cross connect (OXC), the secondary attac ... [Opt. Eng. 50, 100501 (2011)] published Thu Sep 29, 2011. http://link.aip.org/link/?JOE/50/090502/1&agg=rss Jingjing Wu, Shiqiang Hu, and Yang Wang<br/> Particle probability hypothesis density (PHD) filter-based visual trackers have achieved considerable success in the visual tracking field. But position measurements based on detection may not have enough ability to discriminate an object from clutter, and accurate state extraction cannot be obtaine ... [Opt. Eng. 50, 090502 (2011)] published Tue Sep 20, 2011. http://link.aip.org/link/?JOE/50/090501/1&agg=rss Suk-Ho Lee, Euncheol Choi, and Moon Gi Kang<br/> We propose a stable scale-adaptive tracking method that uses the centroids of the target colors in the target localization and scale adaptation. Because of the spatial information inherent in the centroids, a direct relationship can be established between the centroids and the scale of the target re ... [Opt. Eng. 50, 090501 (2011)] published Thu Sep 15, 2011. http://link.aip.org/link/?JOE/50/080503/1&agg=rss Yi-Chien Lo, Cheng-Chien Chen, Hung-Yu Chou, Kai-Yu Yang, and Ching-Cherng Sun<br/> In this letter, we present a new design for a light-emitting diode- based bike headlamp. The optical design contains two horizontal reflectors and a light pipe with two horizontal parallel mirrors. The designed illumination pattern in our simulations performs a contrast of 250 in the K-mark regulati ... [Opt. Eng. 50, 080503 (2011)] published Mon Aug 22, 2011. http://link.aip.org/link/?JOE/50/080504/1&agg=rss Xiaoxian Liu, Yilin Chang, Zhibin Li, and Junyan Huo<br/> A texture video-assisted motion vector predictor for depth map coding is proposed in this letter. Based on the analyses of motion similarity between texture videos and their corresponding depth maps, the proposed approach uses the motion vectors of texture videos and the median predictor jointly to ... [Opt. Eng. 50, 080504 (2011)] published Thu Aug 4, 2011. http://link.aip.org/link/?JOE/50/080501/1&agg=rss Wan Qin, Xiang Peng, Xiangfeng Meng, and Bruce Gao<br/> We propose a novel optical asymmetric cryptosystem based on a phase-truncated Fourier transform. Two decryption keys independent of each other are generated. They are referred to as universal key and special key, respectively. Each of them can be used for decryption independently in absence of the o ... [Opt. Eng. 50, 080501 (2011)] published Thu Jul 28, 2011. http://link.aip.org/link/?JOE/50/080502/1&agg=rss Wen Chen, Chenggen Quan, and Cho Jui Tay<br/> In this letter, we propose a novel method to quantitatively recover a complex-valued object from diffraction intensity maps. A wavefront modulation is introduced in the optical path, and several diffraction intensity maps are recorded through position shift of a phase mask. A phase retrieval algorit ... [Opt. Eng. 50, 080502 (2011)] published Thu Jul 28, 2011. http://link.aip.org/link/?JOE/50/070504/1&agg=rss R. Suresh Kumar, Anoop K. Shukla, Sankaranarayanan Babu, Dhenuvakonda Sivakumar, and Ashutosh S. Gandhi<br/> Densification behavior of alpha silicon carbide (SiC) during vacuum hot pressing was studied up to 1900C with sintering additives based on AlN and YO in different proportions. Near theoretical density was obtained with a total sintering additive content of < 4 vol.%. The microstructure of SiC sinter ... [Opt. Eng. 50, 070504 (2011)] published Wed Jul 27, 2011. http://link.aip.org/link/?JOE/50/070501/1&agg=rss Abdelrahman Abdelazim, Stephen J. Mein, Martin R. Varley, and Djamel Ait-Boudaoud<br/> The H.264 video coding standard achieves high performance compression and image quality at the expense of increased encoding complexity. Consequently, several fast mode decision and motion estimation techniques have been developed to reduce the computational cost. These approaches successfully reduc ... [Opt. Eng. 50, 070501 (2011)] published Wed Jul 6, 2011. http://link.aip.org/link/?JOE/50/070502/1&agg=rss Wei-Chia Su, Jhen-Yu Jiang, Hui-Chuan Chen, Yu-Wen Chen, and Sidney S. Yang<br/> A nonvolatile reading of erasable polarization holograms in dye-doped liquid-crystal films using the same writing wavelength is presented. The recorded hologram can be easily erased with the illumination of one p-polarized wave; nevertheless, it becomes nonvolatile when reading the hologram with one ... [Opt. Eng. 50, 070502 (2011)] published Wed Jul 6, 2011. http://link.aip.org/link/?JOE/50/070503/1&agg=rss Md. Nazmul Hossain, M. Shah Alam, Dihan Md. Nuruddin Hasan, and K. M. Mohsin<br/> A silica spiral photonic crystal fiber is presented here for tailoring two zero dispersion wavelengths (ZDWs) in the visible region. The proposed fiber has two ZDWs (523.1 and 716.8 nm) along with a very high nonlinearity parameter (1060 W km at 500 nm) around the visible region. The proposed design ... [Opt. Eng. 50, 070503 (2011)] published Wed Jul 6, 2011. http://link.aip.org/link/?JOE/50/050501/1&agg=rss Radhakrishnan Ranjini, Amrutha K. Adiyodi, Murukeshan Vadakke Matham, and Nam-Trung Nguyen<br/> The propagation of laser beam in a flow aligned nematic liquid crystal (NLC) and its interaction with liquid are illustrated in this letter. The effect of polarization and scattering on the transmitted power through the NLC under external perturbation flow is demonstrated here. It is found that the ... [Opt. Eng. 50, 050501 (2011)] published Thu May 5, 2011. http://link.aip.org/link/?JOE/50/040502/1&agg=rss Kwanghyun Won, Jungyoup Yang, and Byeungwoo Jeon<br/> This paper proposes a motion vector coding scheme which uses the optimal predictive motion vector from the surrounding causal motion vectors in the minimum rate-distortion sense. The signaling overhead for the selected predictive motion vector is reduced by a contradiction testing that operates unde ... [Opt. Eng. 50, 040502 (2011)] published Thu Apr 28, 2011.