What is volume rendering in computer graphics?
In scientific visualization and computer graphics, volume rendering is a set of techniques used to display a 2D projection of a 3D discretely sampled data set, typically a 3D scalar field.
What is a volume rendered image?
Volume rendering represents a collection of methods used in computer graphics and scientific visualization to create a 2D projection from a discretely sampled 3D data set. An example of a 3D data set is a collection of MRI, CT, or MicroCT scanner 2D slice images.
What is VR in CT scan?
The virtual reality system converts computed tomography (CT) scans into 3D images that a radiologist can virtually move and examine while wearing a pair of virtual reality glasses.
How do I render a volume?
There are several steps in the volume rendering process that enable more high definition results:
- Create an RGBA volume, a 3D four-vector data set, from the data.
- Reconstruct a continuous function using this discrete data set.
- Project the output image 2D viewing plane from the optimal point of view.
What are 3D volumes?
Volume data are 3D entities that have information inside them. They might not consist of surfaces and edges at all. A volumetric object is typically represented as a large 3D grid of voxels. A voxel is the 3D counterpart of the 2D pixel.
How computer vision is related to image based modeling?
In computer graphics and computer vision, image-based modeling and rendering (IBMR) methods rely on a set of two-dimensional images of a scene to generate a three-dimensional model and then render some novel views of this scene.
What is volume in image processing?
A volume (3D) image represents a physical quantity as a function of three spatial coordinates. In a digital volume image, each sample (voxel) represents this quantity measured at a specific location. The image is made by a spatial sequence of 2D slices that include the object of interest.