The growth of digital imaging during the last few years has affected many fields of human life. Now a days digital imaging is popularly used in many industrial solutions concerning. In the process industry several on-line measurement systems are based on the digital imaging. As a result of this development, the amount of the image data has increased rapidly. Consequently the sizes of different kinds of image databases in the industry have increased significantly. Therefore managing of these databases has become necessary. Image is a pictorial representation of a person, scene or object. An image is a realistic or semi-realistic representation of a variety of subjects produced by a number of methods and in a number of different styles. The Digital image processing allows one to enhance image features of interest while attenuating detail irrelevant to a given application and then extract useful information about the scene from the enhanced image. Digital image processing is the use of computer algorithms to perform image processing on digital images. Digital image processing has the same advantages over analog image processing as digital signal processing has over analog signal processing it allows a much wider range of algorithms to be applied to the input data and can avoid problems such as the build-up of noise and signal distortion during processing. Image Processing and Computer Vision are concerned with developing algorithms for analyzing the contents of an It is also concerned with image data compression and improves the quality of an image by filtering and removing or degradation of noise present in the image viz. image enhancement and image restoration. On the other hand, image analysis deals with tasks like extraction of lines, curves and regions in the image. It also includes classifications and segmentation of objects in the image using boundary information, texture analysis, analysis of sequence of images with an interest of estimating the motion of objects and scene analysis. In image processing the inputs and the outputs are images, while image analysis involves analyses of features of images and the outputs are list of objects presenting the image or a set feature such as edges and
Imagery is the visually descriptive or figurative language, especially in a literary work (Imagery). In the Fellowship of the ring, Tolkien utilizes this more than any other literary device. On page 80 Tolkien described the elves for the
Imagery is when the author presents a mental image through descriptive words. One prime example of imagery that the author uses is in paragraph 3; where she tells of a moment between a man and a woman. In this narration she states the time, year, outfit of each character described, and what the female character was doing. These details might come across as irrelevant, or unnecessary, but this is Didions way of showing what the blueprint of notebook it. Using imagery reinforces the foundation of the essay, and what the essay’s mission was.
the mean value and the standard deviation, to represent the global characteristics of the image, and the image bitmap is used to represent the local characteristics of the image for increasing the accuracy of the retrieval system. Aptoula et al. [8] presen...
...omated detection of lines and points in the images and the use of smart markers in reference video recordings.
Essentially, once an image exists in digital form, it can either be tweaked to adjust even its most indiscernible features or it can be entirely morphed into something altogether different. There ...
The proposed multimodel segmentation was tested with almost all combination of mass shapes and margins in CC and MLO views and the segmented abnormal region was verified with ground truth table images in which abnormality marked by radiologist in the DDSM database. Further feature extraction methods and classifier has to be developed for fully automated diagnosis CAD system. Further study has to be carried out to test the algorithm for the segmentation of micro calcifications.
As time marches on so does the flow of new technology. Even though the old form of analog photography may never become obsolete it is abundantly clear that digital imaging is here to stay.
Photography is the process of making pictures by the action of light. Light reflected from a subject forms an image of that subject on a light-sensitive device, called a camera, onto a paper-like material, called a picture. The image formed by light is then digitally or chemically processed into a photograph. The word photograph is combined from two different greek words. Photo comes from the greek word light, and graph comes from the greek word to write or draw. Altogether photography means to write or draw with light.
Photographers use many techniques like enhancing lighting or using specialized filters and lenses to set the scene for films. Photographers also use computer softwares to crop, rotate, correct colors and overall modify them in various ways.
After the initial pre processing steps of smoothening and removal of noise, the edge strength is calculated by taking the gradient of the image. For the purpose of edge detection in an image, the Sobel operator first performs a 2-D spatial gradient measurement with the help of convolution masks. The convolution masks used is of the size 3X3, where one is used to calculate the horizontal gradient(Gx) while the other is used to calculate the vertical gradient(Gy). Then, the approximate absolute edge strength can be calculated at each point. The masks used for the convolution process is as shown
Digital photographs is the art and science of producing and manipulating digital photographs that are represented as bit maps. Digital photographs can be produced in a number of ways:Directly with a digital camera, By capturing a frame from a video and By scanning a conventional photograph.
Image segmentation divides a digital image into multiple regions in order to analyze them. It is also used to distinguish different objects in the image. Several image segmentation techniques have been developed by the researchers in order to make images smooth and easy to evaluate. Famous techniques of image segmentation which are still being used by the researchers are Edge Detection, Threshold, Histogram, Region based methods, and Watershed Transformation.
Data is collected and the patterns are recognized, in order to understand the physical properties, and further to visualize the data as
From the point of view of the application, the digital image is presented as a matrix I that are consist of r = 1, and so on, R is rows and j = 1, and so on, C is columns. For that, the elements of the matrix that are carry intensity values. By that, depending on the type of image will make the matrix consists only have of one layer (a grey tone image) or several layers (coloured, multispectral, and hyperspectral images). A colour table is an alternative form of an image decription.
"Digital photography has opened up a whole new world of possibilities for photographers" (George. C., 2006). Digital photography can overcome some of the problems in some fields for example; arts field, education field, trade field, economic field, medicine field etc... It can produce better images with colors in arts field, also we can use digital photography in the schools, and colleges etc in education field and it can increase employment for many countries in trade field. So, digital photography is important in different fields of our daily life such as; arts, education and trade fields where work is impossible without it.