DIGITAL IMAGE PROCESSING
Digital image processing is the technology of applying a number of computer algorithms to process digital images. The outcomes of this process can be either images or a set of representative characteristics or properties of the original images.
The application of digital image processing have been commonly found in robotics/intelligent systems, medical imaging, remote sensing, photography and forensices.
What Is Digital Image Processing
An image may be defined as a two-dimensional function, f(x, y), where x and y are spatial (plane) coordinates, and the amplitude of f at any pair of coordinates (x, y) is called the intensity or gray level of the image at that point.
When x, y, and the amplitude values of f are all finite, discrete quantities, we call the image a digital image.
Digital Image Processing refers to processing digital images by means of a digital computer.
Low-level processes involve primitive operations such as image preprocessing to reduce noise, contrast enhancement, and image sharpening. A low-level process is characterized by the fact that both its inputs and outputs are images.
Mid-level processing on images involves tasks such as segmentation (partitioning an image into regions or objects), description of those objects to reduce them to a form suitable for computer processing, and classification (recognition) of individual objects.
The Origins Of Digital Image Processing
One of the first applications of digital images was in the newspaper industry, when pictures were first sent by submarine cable between London and New York.
Introduction of the Bartlane cable picture transmission system in the early 1920s reduced the time required to transport a picture across the Atlantic from more than a week to less than three hours. Specialized printing equipment coded pictures for cable transmission and then reconstructed them at the receiving end.
A finite number of elements, each of which has a particular location and Value.
digital image processing
What is a Diamond ?
Diamond is a natural gem known to mankind from prehistoric times and has been praised for centuries as a gemstone of exceptional beauty, brilliance and lustre. It is a symbol of richness and power. Graphite and Diamond are two allotropic forms of Carbon. In diamond, each Carbon atom is covalently single bonded to four other Carbon atoms in a tetrahedral manner.
The Impostors :
As Impostor is any gem that claims to be as good or better than, just like, as hard, more beautiful than, but cheaper than a diamond. The “Impostors” come in two groups, the stimulants and the synthetics. A stimulant is something that looks similar to a diamond but does not have the same properties (weight, specific gravity, refractive index, hardness, etc). Zircon is a natural stone (stimulant) often used to imitate diamonds. A synthetic is a man-made diamond that has all properties of a natural diamond. Cubic Zircon is a synthetic stone. Zircon is a substitute for diamond and Glass is a substitute for Zircon.
3. The pavilion(the bottom)
The size of the table, the symmetry of the facets, the thickness of the girdle, and the angle of the pavilion must all work together to give the diamond the sparkle that is wanted. The light enters the diamond through the crown, splits into white and colures light, bounces off the facets of the pavilion back up through thee crown, where it could be seen as a ‘Sparkle’. To achieve the maximum sparkle – that magic combinations of brilliance and fire – the diamond must be well cut and cut in the proper proportion. The typical diamond is cut with 58 facets, 33 on the crown and 25 on the pavilion. On a well- proportioned stone, these facets will be uniform and symmetrical. If they are not, the diamonds ability to refract light will suffer.
Dispersion is the breaking up of white light into spectral colors. Prisms show that a beam of white light is composed of different light rays, each with its own wavelength. Each different wavelength is perceived as a different colour. Each ray of light has its own wavelength, direction of travel, and intensity.
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