mostly used in terms of computer graphics artifacts are unwanted bugs in rendered output
in terms of computer graphics artifacts are unwanted bugs in rendering output
- usually caused by rounding errors of float values
- or by overflows/underflows of integer values
Most usual are:
- invalid pixel color for some pixels
- choppyness (pixelation) of image (like very low quality JPG)
- holes in geometry (related to Z-Buffer accuracy)
Artifacts are not bound to graphics only
- for example high order polynomial computations can also have artifacts inside
- causing invalid results while using them if precision is too low
