The fidelity of virtual avatars in digital twin simulations is paramount for achieving realistic analyses. This research introduces a novel photogrammetric 3D modeling technique tailored to enhance the representation of virtual avatars within the digital twin paradigm. Building on the foundational principles of the Meshroom photogrammetry pipeline, our method integrates strategic modifications to specific processes, aiming to boost both precision and operational efficiency. Our enhanced approach endeavors to craft digital twin avatars that more faithfully mirror their real-world counterparts. To validate the effectiveness of our proposed system, we conducted a comparative analysis, juxtaposing avatars derived from our method against those produced by the traditional Meshroom pipeline. The empirical data underscores certain limitations in the original and our modified channel, especially in accurately modeling exposed skin areas like the head and limbs. However, our refined technique marks a notable improvement, optimizing the 3D model reconstruction outcomes by 80.37% compared to the standard Meshroom photogrammetry pipeline.