## 6 Experimental Results
The algorithm proposed in this paper significantly improves the contrast of the solid-liquid interface in the image, thereby obtaining a clearer solid-liquid interface. It can better understand the growth mechanism of crystals and extract more accurate crystal dynamics functions. By gaining a deeper understanding of the crystal growth mechanism, we can develop corresponding plans to change and optimize the growth process, in order to improve the performance of the crystal. The solid-liquid interface contrast enhancement algorithm plays a crucial role in this process, helping us better understand crystal dynamics and providing important support for optimizing growth mechanisms to improve crystal performance. During the melting and solidification of BiFeO\({}_{3}\), the solid-liquid interface marks the boundary between solid crystals and liquid melts. In Figure 14a-i, low-melting-point BiFeO\({}_{3}\) is on the left side of the images. The material starts to melt at 800 \({}^{\circ}\)C. On this side, BiFeO\({}_{3}\) is in the liquid or semi-solid state during the melting process. On the right side is high-melting-point BiFeO\({}_{3}\), which does not melt during the experiment. When BiFeO\({}_{3}\) on the left side begins to melt, a BiFeO\({}_{3}\) solid-liquid interface will be created so that the crystal growth process can be observed. Changes in the density of the melt cause changes in the X-ray transmission images, usually because heating causes varying densities over different areas of the melt and \begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Method**} & \multicolumn{4}{c}{**Evaluation Scores**} \\ \cline{2-4}  & **CEIQ** & **EME** & **MOE** \\ \hline Original image (a) & 2.289 & 3.765 & 6.065 \\ HE (b) & 4.493 & 12.037 & 7.801 \\ CLAHE (c) & 4.975 & 6.181 & 7.139 \\ EngligentGAN (d) & 4.201 & 14.2223 & 7.009 \\ Wavelet (e) & 3.303 & 1.8334 & 6.412 \\ GTIE-IACE (f) & 6.512 & 41.0593 & 7.804 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Evaluation scores of different image enhancement algorithms. Figure 14: BiFeO\({}_{3}\) solid-liquid interface images processed by GTIE-IACE. (**a**) shows the beginning of heating BiFeO\({}_{3}\); (**b–f**) shows the heating process of BiFeO\({}_{3}\); (**g**) shows the stop of heating BiFeO\({}_{3}\) and the beginning of solidification; (**h**) shows the solidification process of BiFeO\({}_{3}\); (**i**) shows the complete solidification of BiFeO\({}_{3}\) and the end of the experiment. changes in X-ray absorption. The denser melts appear as darker areas in the images. In Figure 14a, the marked area on the left side of the image is darker and denser, and it shows stronger X-ray absorption. In the meantime, BiFeO\({}_{3}\) still maintains a solid structure at this time and has not begun to melt. The color of BiFeO\({}_{3}\) in Figure 14b becomes lighter, and the crystals start to melt. The melting phenomenon of BiFeO\({}_{3}\) in Figure 14c is more obvious. After heating, some crystals of BiFeO\({}_{3}\) have completely melted. The molten BiFeO\({}_{3}\) absorbs less X-rays, and it is in a transparent state. Furthermore, it exhibits a tendency to migrate to the right. From Figure 14b-f, it can be observed that, with the increase in temperature, BiFeO\({}_{3}\) melts, and bubbles generated during the melting process appear in the red marked area on the left side. After melting, cooling and solidification are carried out, as shown in Figure 14g-i, with the gradual decrease in temperature, gradual solidification of the melt is observed. The melt region gradually shrinks and eventually changes to a solid state. Eventually, a solidified state is noted in Figure 14i. It marks the completion of the phase transition process. By observing changes in melting density and X-ray transmission images, the melting and solidification characteristics of BiFeO\({}_{3}\) during heating and cooling processes can be revealed. These observation results can provide guidance for space material design and process control.