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Evaluating Test Image Quality as a Function of illumation | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 28, Issue 12, 2010, Pages 571-583 PDF (335.23 K) | ||
| DOI: 10.30684/etj.28.12.18 | ||
| Authors | ||
| سليمه سلطان سلمان; رشا عواد; عدي عواد | ||
| Abstract | ||
| The optical imaging systems, do not give a perfect and ideal image. But mostly give images with limited resolutions i.e. give images with blur edges. This blurring attributed to two main reasons. The diffraction of light and Aberrations of the optical imaging system. The most important information and details in the image that contained in image edges. The fidelity criteria are evaluate the quality, depending on the whole image plane or in homogenous image regions. so we dealt , in our study , with image estimation depending upon calculating the contrast (mcontrast) of edges regions . Specifying the edges in the image is made by using soble operator . Also , several different and new methods were proposed to calculate the contrast . Contrast is one of the most standards of the checking image quality. In addition the value of the absolute central moment (ACM) and the standard deviation (s ) one calculated to evaluate the images quality with different lighting. | ||
| Keywords | ||
| contrast; Lightness; Image quality; Spatial Frequency | ||
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