Multispectral Palmprint Encoding and Recognition

Palmprints are emerging as a new entity in multi-modal biometrics for human identification and verification. Multispectral palmprint images captured in the visible and infrared spectrum not only contain the wrinkles and ridge structure of a palm, but also the underlying pattern of veins; making them a highly discriminating biometric identifier. In this paper, we propose a feature encoding scheme for robust and highly accurate representation and matching of multispectral palmprints. To facilitate compact storage of the feature, we design a binary hash table structure that allows for efficient matching in large databases. Comprehensive experiments for both identification and verification scenarios are performed on two public datasets -- one captured with a contact-based sensor (PolyU dataset), and the other with a contact-free sensor (CASIA dataset). Recognition results in various experimental setups show that the proposed method consistently outperforms existing state-of-the-art methods. Error rates achieved by our method (0.003% on PolyU and 0.2% on CASIA) are the lowest reported in literature on both dataset and clearly indicate the viability of palmprint as a reliable and promising biometric. All source codes are publicly available.Comment: Preliminary version of this manuscript was published in ICCV 2011. Z. Khan A. Mian and Y. Hu, "Contour Code: Robust and Efficient Multispectral Palmprint Encoding for Human Recognition", International Conference on Computer Vision, 2011. MATLAB Code available: https://sites.google.com/site/zohaibnet/Home/code

Design of coupled mace filters for optical pattern recognition using practical spatial light modulators

Spatial light modulators (SLMs) are being used in correlation-based optical pattern recognition systems to implement the Fourier domain filters. Currently available SLMs have certain limitations with respect to the realizability of these filters. Therefore, it is necessary to incorporate the SLM constraints in the design of the filters. The design of a SLM-constrained minimum average correlation energy (SLM-MACE) filter using the simulated annealing-based optimization technique was investigated. The SLM-MACE filter was synthesized for three different types of constraints. The performance of the filter was evaluated in terms of its recognition (discrimination) capabilities using computer simulations. The correlation plane characteristics of the SLM-MACE filter were found to be reasonably good. The SLM-MACE filter yielded far better results than the analytical MACE filter implemented on practical SLMs using the constrained magnitude technique. Further, the filter performance was evaluated in the presence of noise in the input test images. This work demonstrated the need to include the SLM constraints in the filter design. Finally, a method is suggested to reduce the computation time required for the synthesis of the SLM-MACE filter

Nutritional value of Pleurotus (Flabellatus) Djamor (R-22) cultivated on sawdusts of different woods

The sawdust of different woods were investigat ed for the cultivation of exotic strain of Pleurotus (flabellatus) djamor (R-22) to find out the efficiency of different nutrients including protein, fat, crude fiber, ash, dry matter and moisture. Among all type of nutrients, protein, fat, cr ude fiber, ash, dry matter and moisture of Pleurotus ostreatus on sawdust of different woods were observed. Protein was observed on cont rol treatment (cotton waste, kikar, mango, mixed sawdust, simbal and kail (21.89), (21.64), (21.34), (21.16), (21.03) and (20.75) % respectively. Fat was observed on control treatment (cotton waste, kikar, mango, mi xed sawdust, simbal and kail (0.80), (0.53), (0 .41), (0.33), (0.24) and (0.11)% respectively. Crude fiber was observed on control treatment (cotton waste, kikar, mango, mixed sawdust, simbal and kail (8.92), (8.45), (8.17), (7.96), (7.70) and (7.32) % respectively. Ash was observ ed on control treatment (cotton waste, kikar, mango, mixed sawdust, simbal and kail (7.65), (6.75), (6 .47), (6.39), (6.33) and (6.23%) respectively. Dry matter was observed on control treatment (cotton waste, kikar, mango, mixed sawdust, simbal and kail (6.47), (6.27), (6.13), (6.01), (5.87) and (5.67) % respectively. Moisture was observed on control treatment (c otton waste, kikar, mango, mixed sawdust, simbal and kail (84.55), (81.20), (79.85), (76.26), (74.35) and (71.14) % respectively. Oyster mushroom showed relatively more contents on control treatment cotton waste as compared to other substrates. The maximum protein, fat, crude fiber, ash, dry matter and moisture contents in Pleurotus (flabellatus) djamor (R-22) was obtained on Kikar sawdust .The lowest contents was obtained on kail sawdust

Engineering of impurity doped regions in semiconducting BaSi[2] by MBE for thin film solar cells application

筑波大学University of Tsukuba博士（工学）Doctor of Philosophy in Engineering2012【要旨】thesi

Influence of lunar phases on fish landings by gillnetters and trawlers

Observations made on new moon, full moon and during both quarters revealed variations in total catch as well as individual species catch in gillnetters and trawlers. Gillnet catches of sardines and mackerels showed a gradual increasing trend from new moon to full moon and then a decline towards the new moon whereas, barracuda and tuna catches exhibited an increasing trend from full moon to new moon. The catches of seerfish and sailfish were high during full moon to new moon quarter and were nominal during full moon. In trawl catches, during the first half of new moon and full moon days, Fenneropenaeus indicus and Penaeus semisulcatus were caught in large numbers and Fenneropenaeus merguiensis dominated the later half. Metapenaeus monoceros and Penaeus monodon were caught in lesser quantitie

Diversity of Brachyuran crabs in Gulf of Mannar (Southeast coast of India)

Coral reefs protect the coastline against waves and erosion and constitute one of the most diverse marine ecosystems in the World. Coral reefs provide Subsistence, security and cultural utility to the inhabitants of coastal areas in all the tropical nations. Nevertheless, reef degradation is Widespread, due to their manifold uses and importance to the people or developing countries. Therefore the lnternational Union for Conservation of Nature and Natural resources (IUCN) considers maintenance of reef fisheries as a global priority. Collection of data about the coral reef resources is the most basic information in a coral reef ecological study. Management could be done only on the basis of such informatio

Present status of coral reefs in Gulf of Mannar Islands

Coral reefs are the most diverse marine ecosystems in the world. Typically they contain number of specialised species representing almost all groups of marine animals. One of the reasons for the great diversity of life in coral reef is the diversified habitats they offer. The great number of holes and crevices in the reef provides abundant shelter for fishes and invertebrates. Coral reefs are also important nurseries and are thus a peculiar store house and repository of various animals

Larval rearing trials of the honeycomb grouper Epinephelus merra Bloch under laboratory conditions

Groupers being economically important food fishes are experimented widely for controlled breeding world over. In India, attempts were made on few species of the genus Epinephelus such as E. tauvina, E. malabaricus and E. polyphekadion at the Central Marine Fisheries Research Institute and limited success was achieved. The present paper discusses on larval rearing trials of the honeycomb grouper E. merra up to juvenile stage. Larvae measuring 1.3 – 1.6 mm obtained from the captive spawning of broodstock of E. merra were used for the larval rearing studies. The feeding protocol, water exchange and larval rearing methods adopted are detailed. The larval mouth opening appeared on day 3 post-hatch. The larvae gradually metamorphosed into juvenile by day 60 and attained a size of 45 mm. The possible reasons for initial mortality, the advantage of HUFA rich feeding and effect of large volume of rearing tanks on the growth and survival of the larvae are discusse

Brachyuran crabs of Gulf of Mannar

Coral reef ecosystems are tropical, shallow water marine ecosystems, largely restricted to ttJe area between the latitudes 300N and 300S of equator. Even though, they occupy less than 0.2 % of the ocean floor, they contain perhaps 25% of the ocean's species (IUCN/UNEP, 1985). Thus the coral reef ecosystems are well known for their species richness and also complexity. It is quite remarkable that an environment with so small an area, has so much life and so many species and thus diversity. Typically they contain number of specialised species representing almost all the groups of marine animals