The best optical microscopes can see structures in the 200 – 400 nm range, at their limits of resolution.
The STM can “see” structures on the order of 0.1 nm —another SPM, the AFM—can distinguish things on the order of 100 nm .
Optical microscopes are “diffraction limited”—the wavelength range of visible light (400-750 nm) sets the size of the smallest thing that can be imaged: ~ 400 nm.
Scanning Probe Microscopes don’t use visible light—they depend on measuring intermolecular ....etc

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In today?s information age it is not difficult to collect data about an individual and use that information to exercise control over the individual. Individuals generally do not want others to have personal information about them unless they decide to reveal it. With the rapid development of technology, it is more difficult to maintain the levels of privacy citizens knew in the past. In this context, data security has become an inevitable feature. Conventional methods of identification based on possession of ID cards or exclusive knowledge like ....etc

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IRIS SCANNING
A FULL SEMINAR REPORT
Submitted by
MARIYATH K.A
in partial fulfillment for the award of the degree
of
BACHELOR OF TECHNOLOGY
in
COMPUTER SCIENCE & ENGINEERING
SCHOOL OF ENGINEERING
COCHIN UNIVERSITY OF SCIENCE &
TECHNOLOGY,
KOCHI-682 022
NOVEMER 2008Page 2

DIVISION OF COMPUTER SCIENCE & ENGINEERING
SCHOOL OF ENGINEERING
COCHIN UNIVERSITY OF SCIENCE & TECHNOLOGY,
KOCHI-682022
Certificate
Certified that this is a bonafide record of the seminar work entitled
IRIS SCANNING
done by the following student
MARIYAT ....etc

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Abstract:
Biometrics is an automated method of capturing a personâ„¢s unique biological data that distinguishes him or her from another individual. Iris recognition has emerged as one of the most powerful and accurate identification techniques in the modern world. It has proven to be most fool proof technique for the identification of individuals with out the use of cards. PINâ„¢s and passwords. It facilitates automatic identification where by electronic transactions or access to places, information or accounts are ma ....etc

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The study of micro cracks in concrete is very important to understand its behavior under loading and to improve this material. The direct observation in a scanning microscope is not a suitable method because the concrete is subject to drying shrinkage. Another indirect and non destructive method of observation by SEM is proposed. With this method using a single replica the micro cracks of concrete can be observed better than 0.5 µm. ....etc

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Introduction

In today's information age it is not difficult to collect data about an individual and use that information to exercise control over the individual. Individuals generally do not want others to have personal information about them unless they decide to reveal it. With the rapid development of technology, it is more difficult to maintain the levels of privacy citizens knew in the past. In this context, data security has become an inevitable feature. Conventional methods of identification based on possession of ID cards or exclusi ....etc

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Introduction

There are two main limitations of using conventional x-rays to examine internal structures of the body. Firstly superimpositions of the 3-dimensional information onto a single plane make diagnosis confusing and often difficult. Secondly the photographic film usually used for making radiographs has a limited dynamic range and therefore only object that have large variation in the x-ray absorption relative to their surroundings will cause sufficient contrast differences on the film to be distinguished by the eye. Thus the details ....etc

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ABSTRACT
CT scanning “ computed tomography is a mechanism of getting the internal details of a section. It is a diagonostic imaging procedure in which anatomical information is digitally reconstructed from X-ray transmission data obtained by scanning an area from many directions in the same plane to visualize information in that plane. CT is a fast patient friendly and has the unique ability to image a combination of soft tissue, bone, lungs and blood vessels.

INTRODUCTION
There are ....etc

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optical scanning technique of dactylogram (fingerprint) developed by using plural LED's with different wavelength as emitting elements and a color CCD or CMOS area image sensor as receiving element. if the above LED's have wave lengths corresponding to those peak sensing wavelengths of the R/G/B outputs of that color area image sensor, Owing to the R/G/B filters built in that color area image sensor ,and if the above mentioned LED's are installed to emit light on the surface of finger from different directions, then it will be effective to get ....etc

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hello
plz tell me the way to make the finger print scanning method..............plz reply me with the process and codes required to make finger print scanning system
waiting reply soon ....etc

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