replace only the ground floor material with realistic concrete grid pavers with grass in between grass filled concrete pavers use a natural pattern where the concrete blocks are clearly defined and the grass grows organically in the joints ensure the texture is applied at correct real world scale each paver approximately 40x40 cm or similar with proper perspective alignment and seamless tiling the grass should look natural slightly irregular and integrated into the joints not flat or artificial the material must adapt accurately to the existing ground geometry and camera perspective without distortion keep the exact original image size resolution framing and aspect ratio do not crop zoom reframe or extend the image in any way do not modify anything else in the image preserve all architecture openings walls lighting shadows reflections environment and composition exactly as in the original preserve every detail the only change must be the floor texture accurately scaled and realistically integrated