What is visible surface detection in computer graphics?
What is visible surface detection in computer graphics?
What is visible Surface detection? When a picture that contains the non-transparent objects and surfaces are viewed, the objects that are behind the objects that are closer cannot be viewed. To obtain a realistic screen image, these hidden surfaces need to be removed.
What are the different types of visible surface detection?
Visible-Surface Detection Methods. More information about Modelling and Perspective Viewing:
How visible surfaces are detected using z-buffer algorithm?
Therefore, in the Z buffer method, each surface is processed separately one position at a time across the surface. After that the depth values i.e, the z values for a pixel are compared and the closest i.e, (smallest z) surface determines the color to be displayed in frame buffer.
Why do we need to remove the hidden surface?
The analogue for line rendering ishidden line removal. Hidden surface determination is necessary to render an image correctly, so that one may not view features hidden behind the model itself, allowing only the naturally viewable portion of the graphic to be visible.
Why we need removal of hidden surface for displaying realistic view for determining the closest visible surface?
When we view a picture containing non-transparent objects and surfaces, then we cannot see those objects from view which are behind from objects closer to eye. We must remove these hidden surfaces to get a realistic screen image. The identification and removal of these surfaces is called Hidden-surface problem.
What is scanline in computer graphics?
A scan line (also scanline) is one line, or row, in a raster scanning pattern, such as a line of video on a cathode ray tube (CRT) display of a television set or computer monitor. This is sometimes used today as a visual effect in computer graphics.
What is hidden surface problem in computer graphics?
What is hidden surface and hidden removal in computer graphics?
In 3D computer graphics, hidden surface determination (also known as hidden surface removal (HSR), occlusion culling (OC) or visible surface determination (VSD)) is the process used to determine which surfaces and parts of surfaces are not visible from a certain viewpoint.
What is the role of hidden surface removal method in computer graphics?
Which method is used for visible the frame?
To make the frame visible, invoke setVisible(true) on it….The Frame API.
| Method | Purpose |
|---|---|
| void setContentPane(Container) Container getContentPane() | Set or get the frame content pane. The content pane contains the visible GUI components within the frame. |
What is visible surface detection methodes?
4.5 VISIBLE SURFACE DETECTION METHODES A major consideration in the generation of realistic graphics displays is identifying those parts of a scene that are visible from a chosen viewing position.
What is the best way to find visible surfaces?
Most visible-surface algorithms use image-space methods, although object space methods can be used effectively to locate visible surfaces in some cases.
How to remove hidden surface problems in image processing?
There are two approaches for removing hidden surface problems − Object-Space method and Image-space method. The Object-space method is implemented in physical coordinate system and image-space method is implemented in screen coordinate system.
What is the depth buffer method in image space?
4.5.3 DEPTH-BUFFER METHOD A commonly used image-space approach to detecting visible surfaces is the depth-buffer method, which compares surface depths at each pixel position on the projection plane.