When we generate synthetic images and these have “defects” calling attention visible degrading the level of realism or say image perfection that have occurred “artifacts”.
Among the most basic devices are the so-called “Aliasing” that produce a feeling sawtooth on straight lines, due to the discrete character of the images.
The correction for this effect is known as “antialiasing”. This technique consists of adding new pixels in the image by interpolating the colors to give a more smooth feeling in the contours of the lines.
In computing and particularly in computer graphics, the aliasing artifact is the characteristic graph on a screen makes certain curves and sloping lines present a visual effect type “sierra” or “step”. Aliasing occurs when trying to render an image with curves and sloping lines on a screen, framebuffer o imagen, but due to the finite resolution of the substrate is that it is incapable of representing the curve as such, and therefore such curves are displayed gear to be composed of small squares (pixel).(W)
In Blender there is a menu to perform antialiasing filter in the calculation of an image render. The filter can be adjusted for different degrees of sophistication in these images performing what is called a “supersampling”. This technique basically consists of calculating each point several times the pixel, slightly modifying the visual ray direction calculation. A larger number of “samples” better the final image will look like, although this is more expensive to produce (time)
This option is available in the menu “Render”
We will activate “Antialiasing” and indicate the degree of refinement: 5, 8, 11 0 16. Other parameters for determining the technique used to perform the oversampling.
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