The scene tree reflects the structure and hierarchy of the data set. Since CAD design has different goals than visualization, the data must be restructured. One of the first tasks is sorting the data. CGI artists (also called 3D artists) create CGIs for all conceivable media. Once the data from the CAD program has been transferred to the 3D content software, the CGI artist's work begins. They have to be remodeled in a simplified way. CAD models are much too large for this purpose and cannot be processed by mobile devices. Interactive applications for mobile devices or the Internet. There is one more special case where 3D modeling is essential. When machines interact with organic objects, such as a tractor with a field, modeling is essential. In automotive design, for example, almost everything can be designed in CAD, except for soft components like the seats. Upholstery, unevenness of leather and seams have to be modeled. CAD software can represent machine parts perfectly, but organic forms are very difficult to represent. In which technical development areas does modeling have to be used? In the design phase in architecture, one can resort to technology. Plants, animals and people - mostly soft and organic objects. Here you are dealing with "objects" of which there is no construction data. When do 3D models have to be created by hand? Doesn't the CAD user also model? He does, but very precisely, because he constructs models that are dimensionally accurate and contain a lot of meta information. The 3D modeling we are talking about here comes from the film and games industry. In which cases one or the other approach makes more sense must be decided on a case-by-case basis. But does this photo live up to the visual claim? Is it worth doing elaborate photo shoots where half of it has to be retouched in the end? In contrast, with CGI everything is possible and you can quickly see what the end result will look like.īut: both ways have their specific advantages and disadvantages. A simple photo without much preparation is easy to take. The customer must weigh up how high the cost/benefit factor is for classic photography. Nevertheless, there are still reasons to photograph products classically. With CG technology it is possible to photograph the location and the lighting conditions on site in order to visualize the data set of the virtual 3D vehicle afterwards on the computer with the lighting and reflection photographed on site. The whole thing then also under secrecy, because one does not want to see the vehicle published prematurely. To accomplish this, the prototype must be transported to a special location, set up and photographed. In the case of a new vehicle, marketing materials need to be developed well in advance of the sales launch. Prototypes are never quite finished, have the wrong configuration, or require elaborate emotional staging. For example, you don't need elaborate camera slides or cranes to realize settings or film driving situations.Īnother elaborate case of photography is photographing prototypes. Of course, what works well in the macro world also makes sense on a larger scale. Macro shots take on a whole new meaning because there are no limits to imagination and physics. Camera settings that would be impossible to achieve with a conventional camera can be perfectly staged and processes, no matter how small, can be communicated in a comprehensible way. You can use the virtual camera to fly into small components, bring out the inner workings, and even show this in motion. What can be difficult to photograph on a large scale is sometimes impossible to photograph on a small scale. Depending on how many things need to be retouched, this can be very time consuming and expensive. Afterwards, the photo would need to be post-processed. But is there the necessary space for the photographer there? Is that the context and background you envision, or are there things in the picture you don't want to see? These general conditions severely limit classic photography. Have you ever tried to photograph a machine that is 8m or higher? You will need a very large studio for that.Īlternatively, they show the machine on location. A photograph is usually easier to take than creating an image with a computer using 3D data. However, there are some cases where photography reaches its limits or can be as costly as a CG production.
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