Background: The growing need for objective and accurate evaluation in Taekwondo poomsae competitions has highlighted the limitations of subjective human judgment. Objectives: This study aims to develop an automated scoring framework using camera-based pose estimation and advanced neural networks to improve the consistency and accuracy of poomsae evaluation. Design: Comparative analysis of neural network architectures on a large-scale dataset of poomsae movements. Methods: A dataset of 902,306 labeled frames, captured from 48 participants performing 62 distinct movements using synchronized multi-view cameras, was analyzed. Five neural networks (HNN, 1D CNN, GCN, MLP, SANN) were implemented and evaluated using accuracy, precision, recall, and F1-score. Results: The HNN demonstrated superior performance with an F1-score of 0.78 in classifying Taekwondo poomsae postures. The 1D CNN followed with an F1-score of 0.76, while GCN, MLP, and SANN achieved F1-scores of 0.74, 0.70, and 0.66, respectively. The HNN's hierarchical feature extraction approach proved effective in capturing the complex spatial and temporal patterns inherent in poomsae movements. Conclusion: Hierarchical Neural Networks outperform other architectures in poomsae classification, establishing a foundation for objective and scalable scoring systems in competitive settings.