Image Mining Research Paper

1787 Words8 Pages

ABSTRACT: Image mining is a part of data mining in the field that handles with the hidden knowledge extraction. Scanned images plays a significant role in image mining research, it analysis the images using numerous techniques which improves the quality of the images. The two important components of image mining are image enhancement and information extraction. Image enhancement techniques are used to improve the quality of image where as information extraction techniques extract the statistical information about portion of an image or any particular image. Document images may contain both scanned machine printed documents and handwritten documents. Scanned Machine printed documents might have been produced using various technologies with …show more content…

Various noise techniques are available in image processing for adding noise such as salt and pepper, guassian, speckle, periodic, average, adaptive noise, etc. This paper is compared with two techniques salt and pepper noise and Gaussian noise. Salt and pepper also known as impulse noise, it is caused by sharp & sudden disturbance in the document images. Guassian noise is caused by random fluctuations in the signal and modeled by random values added to an image [10]. In salt and pepper noise pixels of the image are very different in color or intensity from their surrounding pixels, generally this type of noise will only affect a small number of image pixels. In Gaussian noise, each pixel in the image will be changed from its original value by a small amount. With the comparison of both methods this paper has analyzed salt and pepper noise is best comparing to Gaussian noise. The results of adding noise is displayed in Figure 3.3 and Figure …show more content…

Contrast stretching (often called normalization) is a simple image enhancement technique that attempts to improve the contrast in an image by stretching the range of intensity values it contains to span a desired range of values, e.g. the full range of pixel values that the image type concerned allows. The stretching is a common technique and can be quite effective if utilized properly and measures the difference in optic density, radiation transmission, pixel brightness, or other parameters between two adjacent areas in a radiographic image. Bold technique is used to darken the each text in the document images hence it is easily readable than the prior stage. Contrast Stretching is demonstrated in Figure 3.7 and bold image displays the Figure

More about Image Mining Research Paper

Open Document