List of Articles Feature extraction Open Access Article Abstract Page Full-Text 1 - Detection of Blood Vessels in Retina Images using Gray Level Grouping Method Majid Eskandari Shahraki Mehran Emadi Open Access Article Abstract Page Full-Text 2 - Improving the speed and accuracy of arrhythmia classification based on morphological features of ECG signal Kamran Dehgany habib abadi Mohammad Yousefi Open Access Article Abstract Page Full-Text 3 - Improving Image Quality Based on Feature Extraction and Gaussian Model Alireza Alirezaei Shahraki Mehran Emadi