Design Modeling Graphics
Modeling is forming an objects or object. Creating and designing the object so it looks like life. In accordance with the object and its base, this whole process is done on a computer. Through the concept and design process, the entire object can be shown in three dimensions, so many who call this result as modeling three-dimensional (3D modeling).
There are several aspects that must be considered when building an object model, all of which contribute to the quality of the final result. These things include methods to obtain or make the data that describes the object, the purpose of the model, the level of complexity, cost calculations, suitability and comfort, and ease of manipulation of the model. 3D modeling process requires a design that is shared with several stages of its formation. As the object of what you want to set up a base object, the method of modeling 3D objects, lighting and animation object movement in the order process will be done.
a. Motion Capture / Model 2D
That is the first step to determine the shape of the object model to be built in 3D. The emphasis is an object in the form of facial images that have formed the color intensity of each pixel with the method of the Image Adjustment Brightness / Contrast, Color Balance Image, Layer Multiply, and display Convert RGB mode and JPEG formats. In this stage the use of graphics applications such as Adobe Photoshop or the like. In this phase of the process of determining a 2D object has the notion that a 2D object to be formed is the basis of 3D modeling.
Overall 2D objects can be included in an amount greater than one, the model will be formed according to the needs. Engineering phase results 2D objects can be done with the application of graphics programs such as Adobe Photoshop, etc., at this stage of the 3D modeling, modeling is done manually. With a base of 2D objects that have been determined as a reference. 3D object modeling has a style that is different in its processing, the style of the emphasis lies on the surface shape of an object.
b. Basic 3D Modeling Methods
There are several methods used for 3D modeling. There is a type of object modeling methods that are tailored to their needs as with nurbs and polygons, or subdivision. Modeling polygon is a triangle and a rectangle shape that determines the area of the surface of a character. Each polygon determine a flat surface by putting a line polygon so that we can create new forms of surface. To obtain a smooth surface, it takes a lot of areas of polygons. If only use a polygon, then the object will be divided into a number of fractions obtained polygon.
While Modeling with NURBS (Non-Uniform Rational Bezier spline) is the most popular method to build an organic models. Nurbs curves to be formed by only three points only. Compared with polygon curve that requires a lot of points (vertices) of this method makes it easier to control. One point CV (Control vertex) can control one area to the texture.
c. Rendering process
Stages above the standard in order to form an object for modeling, texturing in this case could be done by modeling overlap, depending on the level of need. Rendering is the process by the end of the whole process of modeling or computer animation. In rendering, all the data that is already included in the process of modeling, animation, texturing, lighting with certain parameters to be translated into a form of output. In the standard PAL system, a rendering resolution is 720 x 576 pixels. Part rendering is often used:
• Field Rendering. Field rendering is often used to reduce the strobing effect caused by the rapid movement of an object in the video rendering.
• Shader. Shader is an additional 3D software used in particular in the process of rendering special. Usually shaders required to meet the specific needs of special effects such as lighting effects, atmosphere, fog and so on.
d. texturing
This texturing process to determine Characteristics of a material object in terms of texture. For a material object can be used application specific properties such as reflectivity, transparency, and refraction. Texture can then be used to create a variety of colors-pattern, level of smoothness / roughness of an object layer in more detail.
e. Image and Display
Is the end result of the whole process of modeling. Usually modeling objects into the output is in the form of an image for correction needs coloring, lighting, or visual effects are included in the modeling teksturing stage. The output images have high resolution ranging from Full 1280 / Screen include files with JPEG, TIFF, and others. In phase display, featuring a bacth Render, namely modeling built, seen, executed with the animation tool. The next analyzed whether the model has been built to the purpose. The output of this display is in the form of * .avi, with a maximum resolution of Full 1280 / Screen and files * .JPEG.
There are several methods used for 3D modeling. Object modeling methods tailored to their needs as with nurbs and polygons, or subdivision. Modeling polygon is a triangle and a rectangle shape that determines the area of the surface of a character. Each polygon determine a flat surface by putting a line polygon so that we can create new forms of surface. To obtain a smooth surface, it takes a lot of areas of polygons. When only used a little polygon, then the object is obtained will be divided into fragments polygon.
Whereas with Nurbs Modeling (Non-Uniform Rational Bezier spline) is the most popular method to build a model of organic. This is due to the Nurbs curves can be formed by only three points only. Compared with polygon curve that requires a lot of points (vertices) of this method makes it easier to control. One point CV (Control vertex) can control one area to the texture.
Design modeling graph is associated with computer graphics. Here are the activities related to computer graphics:
Geometric 1.Pemodelan: creating mathematical models of objects 2D and 3D.
2.Rendering: producing a more solid image of the model has been established.
3.Animasi: Establish / redisplay behavior / object time-dependent behavior.
Computer graphics framework
1.Graphics Library / package (example: OpenGL) is an intermediary application and display hardware (Graphics System).
2.Application program mapped application objects to the display / graphics image by calling the library.
3. Results of user interactions generate / modify the image.
4.Citra is the end result of the synthesis, design, manufacturing, visualization etc.
GeometrisTransformasi modeling of a concept (or a real object) into a geometric model that can be displayed on a computer:
- Shape / form
- Position
- Orientation (point of view)
- Surface Properties / Characteristics Surface (color, texture)
- Volumetric Properties / Characteristics volumetric (thickness / solid, the spread of the light)
- Lights / light (light levels, kinds of colors)
- And others ...
Geometric modeling is more complicated:
- Mesh polygons: a large collection in terms of angular many, connected to each other.
- The shape of the free surface: using low-level polynomial function.
- CSG: build a form to apply boolean operations on primitif.Elemen shape-forming element Graphics Geometry
Processing the image to be displayed on the screen
Hardware Display Graphics: Vector
Tidak ada komentar:
Posting Komentar