Evaluation of Concentration Levels in Learning Using Zoom Meeting by Applying the Histogram of Oriented Gradients (HOG) Method and Support Vector Machine (SVM) Classification - Syarif, H.; Zainuddin, Z.; Tahir, Z. (2022 8th International Conference on Education and Technology (ICET), Education and Technology (ICET), 2022 8th International Conference on, 2022)