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🏠 Two floors 🚆 Two-level vehicle ⬛ Two values only
bilevel

bilevel

7.1
Having only two values, like black and white in images
  • adjective
  • /ˈbaɪˌlɛvəl/
  • Specialized
: bicolor
  • The printer can only produce bilevel documents, so everything is printed in either black or white with no shades of gray.
  • bilevel image
  • bilevel image compression

Examples

  • The Adaptive Bilevel Image Compression (ABIC) algorithm performs lossless data compression on bilevel images.

    Academic text (1998)

  • Bilevel image compression techniques that consider surrounding pels in both the horizontal and vertical directions usually achieve significantly better compression.

    Academic text (1998)

  • This particular approach is suited to bilevel images.

    Academic text (1998)

  • The JBIG-ABIC core provides hardware assistance to the system designer, which reduces CPU (processor) overhead during data compression for bilevel images.

    Academic text (1998)

  • A PQE algorithm generates an exposure value for each picture element (per) based on neighboring bilevel pels.

    Academic text (1997)

  • The ALDC compression algorithm has been extended with a bit-map-optimized preprocessor, referred to as BLDC, to enhance the algorithm's capabilities when compressing bilevel images 8, 9.

    Academic text (1998)

  • This photo is a clear example of a bilevel image, showing strong contrast between the black and white areas.

  • When analyzing bilevel signals, we can easily distinguish between the two intensity levels represented.

Synonyms

bicolor
vsbilevel
1 4.9

Having two different colors

describes two intensity levels like dark and light rather than patterns
dichromatic
vsbilevel
1 8.8

Showing two colors, for example blue and yellow

refers to two intensity levels rather than mere color difference
bitonal
vsbilevel
  • Specialized
1 7.4

Having only two colors or tones, for example black and white

focuses specifically on two intensity levels rather than general tones

Compounds

bilevel car
  • Specialized
1 4.9

A passenger train car with seats on two levels to carry more people

bilevel rail car
  • Specialized
5.2

A train car with two levels of seats to carry more passengers

bilevel railcar
  • Specialized
4.4

A train car with two levels for passengers to sit

How Layered

multilevel
5 4.1
bilevel
  • Specialized
7.1
one
∞ 1.0

Surface Forms

bilevel positive

Morphology

bilevel = level (transparent) = bi + level

The prefix 'bi-' clearly indicates two levels, and 'level' retains its standard meaning.

Etymology

Bilevel is made of bi- 'two' and level 'a stage or value'. A bilevel image or signal uses only two values, like black and white, so each part is one of those two levels.