# Versatile Video Coding-Post Processing Feature Fusion:
## 4 Experimental Evaluations and Discussion
### Quantitative Analysis  
The compression performance of the proposed architecture is detailed in Tables 1 and 2, which highlight its efficiency in both RA and LD configurations. JVET utilizes the BD-Rate [43] metric to evaluate the effectiveness of bit rate reduction, where a lower BD-Rate value signifies better coding efficiency. The RA configuration results in Table 1 demonstrate that the proposed method yields overall coding gains of 5.81%, 14.52%, and 16.19% for the Luma (i.e., Y component) and Chroma (i.e., U and V component) components, respectively, when compared to VVC compression. Specifically, for D-class sequences with a lower resolution of WQVGA (i.e., 416 \(\times\) 240), the proposed method achieves significant average BD-Rate reductions of 7.69% for Luma and 14.43% and 17.98% for Chroma components. \begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Class**} & \multirow{2}{*}{**Sequence**} & \multicolumn{3}{c}{**BD-Rate (\%)**} \\ \cline{3-5}  & & **Y** & **U** & **V** \\ \hline \multirow{4}{*}{A1} & Tango2 & \(-\)4.34\% & \(-\)19.45\% & \(-\)18.88\% \\  & FoodMarket4 & \(-\)3.06\% & \(-\)8.08\% & \(-\)9.10\% \\  & Campfire & \(-\)5.74\% & \(-\)6.38\% & \(-\)18.76\% \\ \hline \multicolumn{5}{c}{Average} & \(-\)4.38\% & \(-\)11.31\% & \(-\)15.58\% \\ \hline \multirow{4}{*}{A2} & CatRobot & \(-\)6.52\% & \(-\)22.98\% & \(-\)21.03\% \\  & DaylightRoad2 & \(-\)7.47\% & \(-\)18.10\% & \(-\)16.31\% \\  & ParkRunning3 & \(-\)1.91\% & \(-\)2.18\% & \(-\)0.60\% \\ \hline \multicolumn{5}{c}{Average} & \(-\)5.30\% & \(-\)14.42\% & \(-\)12.65\% \\ \hline \multirow{4}{*}{B} & MarketPlace & \(-\)3.08\% & \(-\)17.64\% & \(-\)14.65\% \\  & RitualDance & \(-\)5.55\% & \(-\)15.33\% & \(-\)16.73\% \\  & Cactus & \(-\)4.75\% & \(-\)12.96\% & \(-\)11.42\% \\  & BasketballDrive & \(-\)5.97\% & \(-\)18.57\% & \(-\)22.98\% \\  & BQTerrace & \(-\)6.07\% & \(-\)10.87\% & \(-\)8.39\% \\ \hline \multicolumn{5}{c}{Average} & \(-\)5.08\% & \(-\)15.08\% & \(-\)14.83\% \\ \hline \multirow{4}{*}{C} & BasketballDrill & \(-\)6.92\% & \(-\)13.77\% & \(-\)22.00\% \\  & BQMall & \(-\)6.86\% & \(-\)19.92\% & \(-\)22.51\% \\  & PartyScene & \(-\)6.23\% & \(-\)12.64\% & \(-\)9.11\% \\  & RaceHoroses & \(-\)5.11\% & \(-\)19.38\% & \(-\)23.22\% \\ \hline \multicolumn{5}{c}{Average} & \(-\)6.28\% & \(-\)16.43\% & \(-\)19.21\% \\ \hline \multirow{4}{*}{D} & BasketballPass & \(-\)6.46\% & \(-\)10.55\% & \(-\)12.83\% \\  & BQSquare & \(-\)13.10\% & \(-\)8.62\% & \(-\)21.47\% \\  & BlowingBubbles & \(-\)4.49\% & \(-\)14.81\% & \(-\)12.71\% \\  & RaceHoroses & \(-\)6.70\% & \(-\)23.57\% & \(-\)24.91\% \\ \hline \multicolumn{5}{c}{Average} & \(-\)7.69\% & \(-\)14.43\% & \(-\)17.98\% \\ \hline \multicolumn{5}{c}{Overall} & \(-\)5.81\% & \(-\)14.52\% & \(-\)16.19\% \\ \hline \hline \end{tabular}
\end{table} 
Table 1: The compression performance of proposed method for RA configuration. Table 2 presents the coding performance of the proposed architecture for the LD configuration, achieving overall BD-rate reductions of 6.98%, 24.68%, and 26.74% for Luma and Chroma components. The LD configuration excels in WQVGA (i.e., 416 \(\times\) 240) lower-resolution class D sequences and demonstrates improved performance in 1080i/p (i.e., 1920 \(\times\) 1080) high-resolution class B sequences. The average BD-Rate savings for the Luma component are 5.25% for Class B sequences and 8.56% for class D sequences. The compression technique demonstrates a substantial boost in performance for lower-resolution sequences for both RA and LD scenario, which are typically difficult to improve, and exhibits impressive results for high-resolution sequences. Interested readers can see Tables S1 and S2 in the supplementary document for detailed PSNR values. To assess the effectiveness of the proposed method, we compared it to the latest research in [45] and present the results in Tables 3 and 4. Specifically, we evaluated the method in the RA and LD configurations, consistent with the JVET CTC.