A fundamental concern of sampling is ensuring that there are enough samples to accurately reproduce the desired function. The problem is that a set of discrete sample points cannot capture arbitrarily complicated detail, even if we use the most sophisticated reconstruction function. This is illustrated by considering an intensity function that has the similar values at two sample points P1 and P3, but between these points P2 the intensity varies significantly, as shown in Figure 4.2. The result is that the reconstructed function doesn’t reproduce the original function very well.

what is computer rendering

Different ray-casting strategies, such as isosurface, MIP, and composite, can be selected to obtain different effects. Volume rendering based on texture mapping takes advantage of modern computer graphics hardware to produce good-quality results at high frame rates. Other mappers, such as those supporting the VolumePro volume rendering hardware [7], are also available. Rendering is the process of visualization image from 2D or 3D with a computer program. Rendering process based on geometry, viewpoint, texture, lighting, and shading information describing the virtual scene that used to give the concept of an artist’s impression of a scene.


The Website provides users with a very straightforward interface for quickly creating videos out of images, music, and video fragments submitted by users. Users select a specific theme for a video, upload the photos and videos and order them in the sequence they want to appear, select the song for the music, and render the video. The process is executed in the background and the user is notified via email once the video is rendered. Media applications are a niche that has taken a considerable advantage from leveraging cloud computing technologies. In particular, video-processing operations, such as encoding, transcoding, composition, and rendering, are good candidates for a cloud-based environment.

For example, it is common for computers to render high-definition video game graphics at over 60 fps. Depending on the graphics power, a game’s frame rate may be faster or slower. If the GPU cannot render at least 30 frames per second, the video game may appear choppy. In addition to animation and video gaming, rendering can be used to develop and show visual concepts for projects such as architecture for a building.

Rendering (computer graphics)

When the pre-image (a wireframe sketch usually) is complete, rendering is used, which adds in bitmap textures or procedural textures, lights, bump mapping and relative position to other objects. For example, a DAW application may include effects like reverb, chorus, and auto-tune. The CPU may be able to render these effects in real-time, but if too many tracks with multiple effects are being played back at once, the computer may not be able to render the effects in real-time. If this happens, the effects can be pre-rendered, or applied to the original audio track.

what is computer rendering

Additionally, the rendering service may have specific software requirements for the 3D modeling or animation software being used. The hardware requirements can also vary depending on the complexity and size of the project being rendered, with more complex projects requiring more processing power and memory. Some cloud rendering services may offer access to high-performance hardware, such as powerful CPUs or GPUs, to speed up the rendering process. Software what is rendering in programming rendering refers to the process of generating an image from a model via software in the CPU, independent of the constraints of graphics hardware. Rasterization, the rendering method used by all current graphics cards, geometrically projects objects in the scene to an image plane, which is an extremely fast process, but does not include advanced optical effects. 3D graphics are rendered from basic three-dimensional models called wireframes.

CPU vs GPU Rendering

From sine wave decomposition, it becomes clear that the number of samples required to reproduce a sine wave must be twice its frequency, assuming ideal reconstruction. Generalizing from this result, to accurately reconstruct a signal, the sample rate must be at least twice the rate of the maximum frequency in the original signal. Reconstructing an undersampled sine wave results in a different sine wave of a lower frequency. An aliased signal stands in for the original, since at the lower sampling frequency, the original signal and its aliases are indistinguishable.

what is computer rendering

Often it is more useful to look at the frequency domain analysis since it determines how individual spectral components (frequencies) are affected by the reconstruction function. When displaying a graphics image, the reconstruction phase is often implicit; the reconstruction is part of the video display circuitry and the physics of the pixel display. For example, in a CRT display, the display circuitry uses each pixel intensity value to adjust the intensity of the electron beam striking a set of phosphors on the screen.

This type of CGI is mostly used by real estate agents and developers to pre-sell properties that are under construction. At the same time, it can show a sample design to help the prospect picture their life in the place and feel more confident about the purchase. This type of computer 3D rendering is useful for both architects and interior designers.

what is computer rendering

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