objectives: the purpose of this study was to develop and test a new tool for radiographic densitometry by combining periapical films and aluminum step wedge. materials and methods: we reviewed 50 kodak e-speed intraoral films. an aluminum step wedge consisting of 16 steps was constructed. each step was 1mmx3mx10mm. the step wedge was exposed to varying exposure times, ranging from 0.05 second t...

Background: Digital image processing and analysis are used for computer assisted evaluation of sperm morphology. Sperm head morphology has been identified as a characteristic that can be used to predict a male’s semen quality. On the other hand, zygote competence analysis is an importance tool to select embryo(s) for transfer. The aim of the present study is to determine zygote quality resulted...

Computers have been used for language teaching ever since the 1960's.Learning a second language is a challenging endeavor, and, for decades now, proponents of computer assisted language learning (CALL) have declared that help is on the horison. We investigate the suitability of deploying speech technology in computer based systems that can be used to teach foreign language skills. In this case,...

improving the quality of medical images at pre and post-surgery operations are necessary for beginning and speeding up the recovery process. partial differential equations (pdes)-based models have become a powerful and well known tool in different areas of image processing such as denoising, multiscale image analysis, edge detection and other fields of image processing and computer vision. in t...

Availability of digital data within picture archiving and communication systems raises a possibilities of health care and research enhancements associated with manipulation, processing and handling of data by computers. That is a basis for computer-assisted radiology development. Further development of computer-assisted radiology is associated with the use of new intelligent capabilities, such ...

To develop an algorithm for an image processing task a person normally should have both extensive experience in image processing and detailed knowledge of the task. Frequently those who need such algorithms have the detailed problem knowledge but not the image processing experience. We are investigating the extent to which the necessary emrience can be incornrated into .-a system for generating...