A new approach named P-OCS has been introduced to address the challenge of out-of-distribution (OOD) detection, a critical task for deploying deep learning models effectively in real-world applications. This method is characterized by its lightweight design and theoretical grounding, which together enable it to distinguish efficiently between in-distribution and out-of-distribution samples. The importance of OOD detection lies in ensuring that models can recognize when inputs differ significantly from the data they were trained on, thereby improving reliability and safety. P-OCS enhances existing techniques by providing a more efficient mechanism for this differentiation, potentially leading to better performance in practical scenarios. The method's benefits include improved detection accuracy without imposing significant computational overhead. This development aligns with ongoing research efforts to refine OOD detection methods, as reflected in related recent studies. Overall, P-OCS represents a promising advancement in the field of machine learning robustness and reliability.