Computer Graphics Questions Medium
There are several types of image-based modeling techniques used in computer graphics. Some of the commonly used techniques include:
1. Photogrammetry: This technique involves capturing multiple images of an object or scene from different angles and using them to reconstruct a 3D model. It relies on the principles of triangulation to determine the position and depth of each point in the scene.
2. Structure from Motion (SfM): SfM is a technique that uses a sequence of images taken from different viewpoints to estimate the 3D structure of a scene. It involves tracking the movement of features across images and using this information to reconstruct the scene geometry.
3. Image-based Rendering (IBR): IBR techniques use a set of images as input to generate new views of a scene. These techniques can be used to create realistic 3D models by synthesizing new views based on the available images.
4. Light Field Rendering: Light field rendering involves capturing the full 4D light field information of a scene, which includes both the spatial and angular dimensions of light rays. This allows for more realistic rendering and enables effects such as refocusing and changing the viewpoint after the image is captured.
5. Texture Mapping: Texture mapping is a technique that involves applying a 2D image (texture) onto a 3D model to enhance its visual appearance. It is commonly used in computer graphics to add details and realism to 3D objects.
6. Image-based Modeling and Rendering (IBMR): IBMR techniques combine image-based modeling and rendering to create realistic 3D models. These techniques use images as input to reconstruct the geometry of a scene and then render new views based on this reconstructed geometry.
These are just a few examples of the different types of image-based modeling techniques used in computer graphics. Each technique has its own advantages and limitations, and the choice of technique depends on the specific requirements of the application.