Computer display systems use a technique called chromatic adaptation transforms to emulate the correlated color temperature of illumination sources, and cannot perfectly reproduce the intricate spectral combinations originally seen.

This process is known as complementary chromatic adaptation and is a way for the cells to maximize the use of available light for photosynthesis.

This feature of the visual system is called chromatic adaptation, or color constancy ; when the correction occurs in a camera it is referred to as white balance.

The von Kries chromatic adaptation method is a technique that is sometimes used in camera image processing.

This leads to the von Kries transform for chromatic adaptation in LMS color space ( responses of long -, medium -, and short-wavelength cone response space ):

The pigment area absorbs blue light and is probably an evolutionary adaptation to the problem of chromatic aberration.

The human visual system is able to adapt to these differences by chromatic adaptation.

Any chromaticity difference between the source and reference illuminants were to be abridged with a von Kries-type chromatic adaptation transform.

MEs are explained by the same mechanisms as pharmacological withdrawal symptoms, thus the " pharmacological CR is expressed as pharmacological adaptation ( tolerance ) in the presence of the drug, and withdrawal symptoms in the absence of the drug " and the " chromatic CR is expressed as chromatic adaptation in the presence of colour, and the ME in the absence of colour ".

Neurophysiological explanations of the effect have variously pointed to the adaptation of cells in the lateral geniculate nucleus designed to correct for chromatic aberration of the eye, to adaptation of cells in the visual cortex jointly responsive to color and orientation ( this was McCollough's explanation ) such as monocular areas of cortical hypercolumns, to processing within higher centers of the brain ( including the frontal lobes ), and to learning and memory.

The algorithm that performs this analysis performs generalized color balancing, known as illuminant adaptation or chromatic adaptation.

Color constancy is, in turn, related to chromatic adaptation.

Comparisons of images balanced by diagonal transforms in a number of different RGB spaces have identified several such spaces that work better than others, and better than camera or monitor spaces, for chromatic adaptation, as measured by several color appearance models ; the systems that performed statistically as well as the best on the majority of the image test sets used were the " Sharp ", " Bradford ", " CMCCAT ", and " ROMM " spaces.

Another method that is sometimes preferred uses a Bradford transform or another chromatic adaptation transform ; in general, these work by transforming into an intermediate space, scaling the amounts of the primaries in that space, and converting back by the inverse transform.

It is common to use the LMS color space when performing chromatic adaptation ( estimating the appearance of a sample under a different illuminant ).

The transformation matrices for some chromatic adaptation models in terms of CIEXYZ coordinates are presented here.

This reversible process is known as complementary chromatic adaptation.

* Cone response domain, a triplet of cone cell response values ; referred to as LMS or ργβ or even RGB in context of chromatic adaptation transform

Yet another variant, a member for the PenTile matrix family of subpixel layouts, alternates between subpixel order RGBW / BWRG every other row, to allow subpixel rendering to increase the resolution, without chromatic aliasing.

" Von fremden Ländern und neugierigen Menschen ( Über die Musik für Leier von Juan María Solare )" Solare's music for chromatic Lyre.

Carl Maria von Weber considered the chromatic bass line in the coda of the first movement evidence that Beethoven was " ripe for the madhouse ", and the 20th century conductor Thomas Beecham was uncharitable about the third movement, saying " What can you do with it?

uses this von Kries chromatic transform equation to find the corresponding color ( u < sub > c, i </ sub >, v < sub > c, i </ sub >) for sample i:

The third movement is arguably atonal and the introduction to the finale is very chromatic, arguably has no tonal centre, and features a soprano singing " Ich fühle Luft von anderem Planeten " (" I feel the air of another planet "), taken from a poem by Stefan George.

He is also remembered for creating the von Luschan's chromatic scale for classifying skin colour, which consisted of 36 opaque glass tiles which were compared to the subject's skin.

Such monitor drivers would allow renderers to correctly adjust their geometry transform matrixes in order to correctly compute the values of each colour plane, and take the best profit of subpixel rendering with the lowest chromatic aliasing.

" This aria (" What power art thou who from below ") is accompanied by shivering strings, probably influenced by a scene from Act IV of Jean-Baptiste Lully's opera Isis ( 1677 ) but, as Peter Holman writes, Purcell's " daring chromatic harmonies transform the Cold Genius from the picturesque figure of Lully ( or Dryden, for that matter ) into a genuinely awe-inspiring character-the more so because Cupid's responses are set to such frothy and brilliant music.

Note that this method of determining the key of the instrument is different from the method used to determine the key of a chromatic instrument, which is based on the relationship between notes on a score and sounded pitch.

In the 1920s, Schoenberg developed the twelve-tone technique, a widely influential compositional method of manipulating an ordered series of all twelve notes in the chromatic scale.

One practical method of tuning the piano begins with tuning each note of the chromatic scale in the middle range of the piano.

* Confocal chromatic aberration: This method has the advantage of measuring certain height ranges without a vertical scan, can measure very rough surfaces with ease smooth surfaces down to the single nm range.

Von Luschan's chromatic scale is a method of classifying skin color.

Other scholars, however, state that Prince Chu accurately calculated not a well temperament but equal temperament — though only in his second treatise, Lii Lu Ching I, written in 1595 – 96 and probably first published in 1606 did he achieve the full chromatic complement of 12 notes ( Kutter 1975, 166 – 67 ).

This normally results in chromatic aberration – however this effect can, for example, be used to generate an image which provides information on elemental composition, based upon the atomic transition during electron-electron interaction.

Some chanters can play chromatic notes however, and some old tunes, for instance Bold Wilkinson or Wat ye what I got late yestreen, suggest a dorian scale may also sometimes have been used, requiring minor third instead of the major third of the mixolydian scale.

Mice, which normally have only two cone pigments, can be engineered to express a third cone pigment, and appear to demonstrate increased chromatic discrimination, arguing against some of these obstacles ; however, the original publication's claims about plasticity in the optic nerve have also been disputed.

It is important to note, however, that in Bach's cycle the pieces are arranged in parallel major / minor pairs ascending the chromatic scale ( C major, C minor, C sharp major, C sharp minor etc.

Note however that each linear program may have size that is exponential in the number of vertices of G, and that computing the fractional chromatic number of a graph is NP-hard.

The chromatic abilities of recently-developed brass instruments, however, opened new possibilities for composers of the Romantic era, and fit with the artistic currents of the time.

Evil chromatic dragons like black, blue and red dragons usually become dracoliches, because of the evil magic involved in their creation ; however, rumors spread about other kinds of dragons submitting to the process as well.

They are commonly used for laser applications, however, where the beams are both monochromatic ( minimizing chromatic aberration ) and narrow ( minimizing spherical aberration ).

The achromatic channel will have a slightly slowed response time since it must adjust to the different luminance ; however, despite this delayed response, the speed of the achromatic channel response time will still be faster than the speed of response of the chromatic channel.