create a highly photorealistic architectural visualization based strictly on the provided image important do not modify the architecture layout dimensions proportions geometry circulation pathways furniture placement hardscape design terrain shape camera angle or overall design intent preserve the original composition exactly as shown the task is to improve realism only not to redesign the project the existing mature trees are an important part of the design and must remain in their current locations improve their realism through natural canopy variation realistic bark textures subtle leaf color differences and accurate light penetration through the foliage the existing openwork pergola located on the left side of the courtyard is an important architectural feature and must remain exactly in its current position dimensions proportions and design do not redesign enlarge replace or modify the pergola structure render the pergola as premium quality light natural timber with realistic wood grain subtle weathering precise joinery details and physically accurate material properties preserve its lightweight open slatted character and realistic shadow casting do not add roofing glazing fabric canopies climbing plants or additional architectural elements the central raised planter containing the existing tree and integrated seating is a key design element and must remain exactly as shown do not remove relocate enlarge reduce or redesign the planter tree or integrated seating introduce a simple contemporary wooden terrace deck surrounding the planter and occupying the open paved area visible in the foreground the terrace should be elevated approximately 15 cm above the surrounding pavement level and seamlessly integrated into the existing design the deck should wrap naturally around the central planter while preserving all circulation routes accessibility and spatial relationships shown in the original image construct the terrace from high quality light natural timber decking boards with realistic grain subtle weathering accurate board joints and premium architectural detailing the planter walls and integrated seating must remain fully visible and unchanged the planter should emerge naturally from the wooden deck surface and remain the visual focal point of the courtyard do not add railings fences steps additional platforms decorative elements or any structures not visible in the original image apart from the introduction of the wooden terrace all architectural elements must remain unchanged surface materials preserve all existing paving and landscape elements areas shown as lawn should be rendered as healthy natural grass with realistic variation in height density and color where concrete stepping slabs occur within the lawn maintain approximately 10 cm grass joints between slabs improve the realism of all hardscape materials through subtle imperfections weathering texture variation and physically accurate reflections small architecture and furniture all benches pergolas screens and wooden landscape elements should be rendered in high quality light natural wood add realistic wood grain subtle imperfections and physically accurate material properties do not change the form dimensions or placement of any architectural element vegetation add vegetation carefully and sparingly the landscape should remain calm elegant therapeutic and appropriate for a healthcare environment do not overcrowd the project with planting the primary goal is to enhance realism while preserving open space and the original design concept emphasize ornamental grasses especially naturalistic compositions based on stipa tenuissima ponytails calamagrostis acutiflora karl foerster deschampsia cespitosa festuca amethystina carex montana miscanthus sinensis goliath if additional plants are needed use only the following species aconitum carmichaelii arendsii liatris spicata aster samoa salvia nemorosa veronicastrum virginicum fascination verbena bonariensis digitalis mertonensis astilbe chinensis filipendula rubra venusta magnifica anaphalis triplinervis scabiosa caucasica fama white cerastium tomentosum sedum spectabile paeonia itoh bartzella trollius x cultorum full moon helenium kanaria achillea terracotta geum totally tangerine echinacea eccentric polystichum setiferum plumosum densum matteucia struthiopteris azorella trifurcata carex montana festuca amethystina stipa tenuissima ponytails miscanthus sinensis goliath deschampsia cespitosa calamagrostis acutiflora karl foerster hedera helix hakonechloa macra dryopteris filix mas arrange plants in realistic landscape architecture compositions with natural groupings and restrained quantities avoid excessive flowering displays the overall appearance should remain calm therapeutic and suitable for a hospital setting human figures this is a hospital courtyard a small number of people may be added to increase realism but only adults replace any artificial looking figures with highly realistic adults such as patients visitors medical staff or elderly people people should be shown naturally walking sitting resting reading talking quietly or enjoying the outdoor space do not include children playground elements sports activities fitness exercises running large crowds exaggerated poses keep human presence subtle and believable rendering quality ultra photorealistic architectural visualization competition quality landscape rendering realistic natural daylight physically accurate shadows high quality global illumination realistic ambient occlusion accurate material behavior natural depth of field realistic camera lens characteristics subtle atmospheric effects natural color grading no cgi appearance no oversaturated colors no artificial vegetation no excessive contrast target result a premium landscape architecture visualization that looks like a professional architectural photograph of a completed hospital courtyard the existing pergola central raised planter tree and integrated seating must remain unchanged the newly introduced wooden terrace should appear as a natural extension of the original design elevated approximately 15 cm above the surrounding pavement and finished in premium light natural timber while fully preserving the original architecture composition and spatial character