refine only the marble porcelain surfaces in the image to achieve physically accurate material quality the current marble appears low resolution and pixelated replace its surface definition with a high resolution continuous physically correct marble texture key requirements veins must be sharp but natural with soft edges not aliased or pixelated no noise no grain artifacts no blurry patches the pattern must feel continuous and fluid not tiled or repeated introduce subtle micro surface variation to avoid flat appearance add very fine surface roughness typical of matte porcelain not polished not glossy material behavior light must diffuse softly across the surface no harsh reflections veins should have slight depth variation not just flat color maintain realistic contrast between base and veining without exaggeration continuity ensure perfect alignment between countertop and backsplash no visible seams breaks or mismatched patterns strict constraints do not modify any other material wood metal walls appliances do not change lighting composition or objects do not alter color balance of the scene the result should feel like the same marble but captured with a high end camera a