IMAGE PROCESSING IN SECURITY

IMAGE PROCESSING IN SECURITY

ABSTRACT

The term image processing refers to the manipulation and analysis of two dimensional Pictures.

Image processing is not a new phenomenon.This techniques is used for the manipulation, correction and enhancement of digital images and have been in practical from the last 30 years.

Image processing modifies pictures to improve them, extract information and change their structure. Images can be processed by optical, photographic, and electronic means, but image processing using digital computers is the most common method because digital methods are fast, flexible, and precise. An image can be synthesized from a micrograph of various cell organelles by assigning a light intensity value to each cell organelle. The sensor signal is “digitized” and then converted to an array of numerical values, each value representing the light intensity of a small area of the cell. The digitized values are called picture elements, or “pixels” and are stored in computer memory as a digital image. The digital image is processed by a computer to achieve the desired result.

In this paper, fingerprint segmentation for secure Internet verification purposes is investigated. The novel application of computational geometry algorithms in the fingerprint segmentation stage showed that the extracted feature (characteristic polygon) may be used as a secure and accurate method for fingerprint-based verification over the Internet. On the other hand the proposed method promisingly allows very small false acceptance and false rejection rates, as it is based on specific segmentation.

Data mining is widely used in various areas such as finance, marketing, communication, web service, surveillance and security. The continuing growth in computing hardware and consumer demand has led to a rapid increase of multimedia data searching. With the rapid development of computer vision and communication techniques, real-time multimedia data mining is becoming increasingly prevalent. A motivating application is Closed-Circuit Television (CCTV) surveillance systems.

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