Image Enhancement is one of the most important and complex techniques in image processing technology. The main aim of image enhancement is to improve the visual appearance of an image, or to offer a “better transform representation of the image. Various types of images like medical images, satellite images, aerial images and real life photographs suffer from different problems like poor contras...

CLINICAL use of image-guided therapy (IGT) systems is widespread today and growing rapidly, creating the need for a common and rigorous validation methodology, as reported in recent workshops and conferences [1]–[6]. One key characteristic of IGT systems is that they employ medical image processing methods (e.g., segmentation, registration, visualization, and calibration). As a result of this i...

in this research, first of all, the existing problems in fragmentation measurement are reviewed for the sake of its fast and reliable evaluation. then, the available methods used for evaluation of blast results are mentioned. the produced errors especially in recognizing the rock fragments in computer-aided methods, and also, the importance of determination of their sizes in the image analysis ...