Gone are the days when hand-rendered 2D images were the primary mode of presentation for architects and interior designs. All professionals in the building industry today rely heavily on 3D rendering to sell their designs to the client and to give them a perfect understanding of how exactly their final product will look and feel.
Although for the production of 3D exterior and 3D interior images, an artistic bent of mind is an absolute necessity, a whole different set of skills needs to be picked up than those of a traditional artist. 3D rendering is very unlike 2D and hand rendering. For the latter the scene is visualized right from the start on a flat surface. Colors are used to represent materials and finishes while shading techniques represent lighting and help to get some degree of realism.
Architectural Photorealistic design is a whole different ball game. For a 3D interior image, an entire room is visualized in 3D terms in virtual space. Every single aspect like the walls, openings and even furniture are modeled in detail. Similarly for a 3D exterior image, the entire building is generated in 3D form on the computer, with each architectural feature detailed. This is done using sophisticated computer software, the most popular one being 3D Studio Max.
Initially no colors or materials are allocated to the surfaces. The entire model is generated in a 3D wire-frame mesh. Imagine a house built with matchsticks and you get the picture of what the mesh looks like. Just with many more joints and denser interweaving.
Once the mesh is in place it's time to breathe life into the model by allocating materials and finishes to each surface. Anything from metal to glass and even fabrics and water can be represented. At this stage one can get a better idea of what the final artwork will look like. Also this juncture is the best opportunity for the designer to study his creation, since it is possible to rotate the objects and view it form all angles. He can analyze his design for any defects and make alterations to it. Beyond this point no alterations can be made to the 3D model.
Finally lighting is added to the model, a scene is selected judging the best view point and angle and the image is rendered. This is a long process done on the computer using special rendering software which elicits realism in your image by bringing out the effect of lighting on the same. The final result is a 2D image of your 3D exterior or 3D interior that has photo-realistic quality.
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