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Abstract:
The coding formats available today like the barcodes have proved to be successful because of their various applications like coding of products by a manufacturer, coding of books by a publisher, etc. The continuous advancement in the sensors technology can provide advancement in the coding format. The improvement in color sensors technology can give rise to a better and efficient coding technique. One such method “color cells technology” is proposed and described in his thesis. Due to its advantages like the compactness, security, and efficiency, this code is well suited to be used as a substitute for all available codes like the barcode. In this paper, we provide some insight into color perception, measurement, specification, and look at couple of ways on how data can be produced by a color sensor. Then we study the designing of the color cells encoding technology and its decoding using color sensor and a method to compress data using colors.
Introduction:
Color is the result of interaction between a light source, an object and an observer. In case of reflected light, the light falling on an object will be reflected or absorbed depending on the surface characteristics such as reflectance and transmittance. For example, red paper will absorb most of the greenish and bluish part of the spectrum while reflecting the reddish part, making it appear red to the observer. Any color is the combination of three primary colors Red, Green and Blue in fixed quantities. A color is stored in a computer in form of three numbers representing the quantities of Red, Green and Blue respectively. This representation is called RGB representation which is used in computers to store images in BMP, JPEG and PDF formats. Here each pixel is represented as values for Red, Green and Blue.Thus any color can be uniquely represented in the three dimensional RGB cube as values of Red, Green and Blue.