Images
When performing block-based coding for quantization, as in JPEG-compressed images, several types of artifacts can appear.
- Ringing
- Contouring
- Posterizing
- Staircase noise (aliasing) along curving edges
- Blockiness in "busy" regions (sometimes called quilting or checkerboarding)
Read more about this topic: Compression Artifact
Famous quotes containing the word images:
“The mind loves the unknown. It loves images whose meaning is unknown, since the meaning of the mind itself is unknown.”
—René Magritte (1898–1967)
“Language, the machine of the poet, is best fitted for his purpose in its rudest state. Nations, like individuals, first perceive, and then abstract. They advance from particular images to general terms. Hence the vocabulary of an enlightened society is philosophical, that of a half-civilised people is poetical.”
—Thomas Babington Macaulay (1800–1859)
“For such an advanced civilization as ours to be without images that are adequate to it is as serious a defect as being without memory.”
—Werner Herzog (b. 1942)