Characteristics on the color model. For color space

There is a lot of distinction between flowers on flowers, protection of a svetlva svetlina from the definition of a tree on a wave.

For izluchente colors can be ce priishis such as white light, color on television screen, monitor and so on. Bottom sa three: red, green and blue.

The color of the RGB e model is represented by a three-dimensional graph: a cube, a zero point e is black (without izlchvane) - (0, 0, 0). Each coordinate line reflects the component of the receiving volume in the range from 0 to 255 (the light channel is in full bloom). A point with a maximum of tenacity (255, 255, 255) is available. Diagonally connecting the points to the position of the gray line, please choose three components (23, 23, 23), (130, 130, 130), and such tension. G.). Tozi range se naricha sivat rock (degree in syvoto). Three cubicles in vorhovtet give pure izhoden tsvyat (255, 0, 0), (0, 255, 0), (0, 0, 255), stop three representations of the double-blended original color: cherven and green stave zhelt (255, 255, 0 ), blue and green (0, 255, 255) and lilavo (255, 0, 255) from cherveno and blue.

Kakvo znakova tovova and kakvo znakova tova.First of all, dissuade one thing, one must be a concept, one more concept, since the industry has been thoroughly baptized. Tezi chetiri tsvyata compile component on boyat, thanksgiving on koito receive color images in the printing industry.

This way, some and all, we have three intervals. This is one of the reasons why, like a koito, the image is visible, visible on the monitor, it can be different from each other, it can be broken off in color. Pet is golyama from the gate, as I am on a flight, or a shakashme will show.

FIG. 1.6.

Vrshchayki seyam 16,7 million zvyata in the palette of essay with me, for the sake of clarity or nuance described coordinates (0, 0, 1), (0, 1, 0) and indistinct (3, 6, 4) sa different; But computers are different. In general, perseverances on coordinates and perceptions from 16 million points (224 = 16,777,216).

Tosi is a bloomer model of izpolzva kato is based on the computer system.

In highlight, in the model on the face, maximize the possibilities for editing on the image.

flower model (Syan (in sinyo), Magenta (magenta), zhlto (zhlto), Key ("key"))

Tosi model describing real polygraph fights. Basically color sa three: Cyan (syn), Magenta (magenta), Yelloy (zhlt).They will put together a printed triad (procession of color). All pixels in CMYK are images of a job value, which will determine the percentage of triad color. Nullity on the component will give a whitish color (charter), maximize the worthiness of the tryaba da sa niello, tehnite flatness - a nuance of the syvoto.

FIG. 1.7.

Polygraph scrub mastiff is not just an ideal one, as long as the light is bright. It is mixed purely black on the basis of the base and the basement is not synthesized; such a base is printed on the blackboard and black has been added to the black cloth: the letter Ke is a curse on the dumata key. From blacks, color is common to imprint on imprint to golyam depending on degree.

Tosi's model of crawling itself into the print industry, such as waggens into it, applied izvrshva in the last step on the processing of images. Model RGB and CMYK, in addition to being one with a friend, but mutually reciprocate with them, one friend will never appear without a ruin.

Color model HSB (shade, intensity, brightness)

HSB model in accordance with colors from chokek: color of color, tone of equivalent amount of color per wavelength, intensity of intensity per wavelength and brightness of light.This model is considered to be the most convenient choice for the customer (ak we will choose to program and even, really from the model, but not the digital color and characteristics - (Figure 1.8.).

This model is more abstract, it is a technical tool for direct measurement of color and complexity. In the document you can’t draw the color of the channel (you can’t write the document in the model’s color).

Color can be presented in nature, on the monitor, on the charter. In all cases, the range from the color or color range is different. Nai-wide coverage of e in nature, limited to e itself from being able to choose sight. Frequently from comrade, coexistence with nature, and the monitor. Nyakos from tezi, koito monitor predav, mogat and the impression of imprint (for example, you paint with a lot of niska pltnost se predavat weakly when printed).

Try to enter control.

  1. How do you start a computer image type?
  2. From what way are the vector images going up?
  3. What are these images of vector?
  4. Could you rub up the images?
  5. What is the basis for finding graphics?
  6. Give the characteristics of (two) pixels
  7. How much is the resolution on the same graphics? How do you measure?
  8. How can we choose a separation ability for an image for a certain purpose (on the screen on a computer, for using a printer)?
  9. What are the colors on the desk? In kakvi unit measurement?
  10. How will a divine ability and dumb work in colors se one single friend?
  11. How do you determine the amount of sumat (size per file per disk) on the tainted graphics?
  12. How do you know the models?
  13. What color CMYK model is attached?
  14. Could a file in the HSB color model be able to?

I’m a programmer for education, but I tried it a lot and coped with the processing of images in a job. And Togawa was replaced by unbelievers and was not investigated from the color of space. Not designating and taking pictures and teaching you will learn something new for yourself, but it can be useful and very interesting.
The main task is to color the models in yes and in the middle of the day when they are set on the flowers in the same way. In the color mode, the models will determine the co-ordinates of the system, which will allow you to set the colors one-to-one.
Find the most popular stores: follow the colors and models: RGB (mainly from monitor and camera), CMY (K) (from print), HSI (widely used in computer vision and design). Ima many other models. For example, CIE XYZ (standard models), YCbCr and so on.The traces are briefly traced on the model's color.

RGB color cube

From the law on Grasman, the idea is for supplement (that is, the basis on which it is mixed on color from the direction of identi fi cation of this object) and the model on the model on color. For the first half of the year, a model was proposed by James Maxuel prez in 1861, but the nay-wide e got a lot of value.
In the RGB model (cherveno, green, blue, blue), all colors get halfway, catches, and rub the base color (cherven, green, and blue) in different proportions. Delta on all sides is based on the last few days, and now it’s possible to coordinate the cathode into three-dimensional space, because if you want to see the whole model, the cube is blooming. FIG. 1 model show on flowers cube
Nay-chesto model e design such that cube and e is single. Point, on the basis of the color of the sa podredeni in a single cube, vorkhov are on osita: cherveno - (1, 0, 0), green - (0, 1, 0), sino - (0, 0, 1). In tozi secondary colors (obtained through a mix on two bases), located in another cubicle: syn - (0; 1; 1) Magenta - (1, 0, 1) and zhelt - (1, 1, 0). Black and white color is located at the base (0, 0, 0) and the most distant point is from the coordinate (1, 1, 1). FIG. show itself in vrhovhete on the cube.

Color the images in the RGB model by fencing off the three separate channels for the images. In the table. Razkriva se razlaganeto to the original image in color and channel.

The model for RGB for all components is defined by the bit, for example, the component is written 1 byte, the trace can be found on the model of the encoder 2 ^ (3 * 8) ≈16 million in bloom. It is unnecessary for the practice of Tovah Kodirana; the patron of the choir cannot be patched and many colors can be recognized. Honest e limited so called. "High Color" mode, with coito kodiraneto all components of the component e is assigned 5 bits. In non-compliant applications, the 16-bit iz-crawl mode, the coito component is encoded in R and B ce from 5 bits, and the G component is 6 bits. Tozi mode, right, right, foreseen, foreseen by-the-way sensitivity of the camoukkoto green color, and secondly, allowing you to use a special computer architecture in an effective way. Broken on bitoveta, distribution on the codire in pixels, on the same color on the color scheme. In the table. Now you can try on the codire for a single and editable image with a different heading for colors.

Structurally models CMY and CMYK

The CMY (Cyan from English - Cyan, Magenta - Lilavo, Zhlto - Zhlto) izvazhsche model from crawling for the recipient on the copy on the charter carrier (print) of the image, as in a soft relationship e inversely on the RGB-cube.Ako in the RGB model, base the flowers in color on iztochnitsite on svetlina, CMY model e model for the absorber on the flowers.
For example, charter, pokrit with zhlto bagrilo, not reflecting bluish svetlin, i.e. We can and we can see why Zhattat grilled herself from ozrazenat byala light blue. According to the idea of ​​the beginning, blue ь б б r? This is a concern of the model of the workshop of the subtractive. Algorithm for conversion from RGB model to model CMY is a lot simple:

Suppose you color RGB sa in the interval. Forest yes and see, then for this and that get black color in the CMY model, it is necessary and all mix blue, lilac and zhlto in equal proportions. Tozi's imam's method is a series of shortcomings: rightly, get the black color from the truth, is black from the truth, and from a friend's country, drive to then go to each other. Consequently, to practice the CMY model, cross it up to the CMYK model, adding black and black.

Ton on tsvetovo space, nasitinostta, Intensiveness (HSI)

Color the models RGB and CMY (K), talk out early, sa forgive your attitude to harduer, but they have only one disadvantage.It is hard to do a lot with flowers, match models, look for colors, describe colors, do not crawl into descriptions in the main components, but in another category.
Honestly Khorat will work with the UNF. Follow the concepts: the tone is blooming, naschishane and lekota. In a time consummation, by speaking colors for tones, they are just meaning colors. Nasitenost shows how to describe the color of its rarefaction with whiteness (pink, for example, the mixture from cherveno and byalyo). It is understood that lekhote is not so difficult and described above and with the tolerance of lekkote you can even be able to sort out the intensity of light.
Ako on the projection of an RGB cube in a diagonal post-whitish-black, receiving a hexagon:

Wash the color of the sivi (located on the diagonal on the cube) across the projector central square. For yes, crawl the model, for all the colors, cash in the RGB model, try and add vertical waves to the lightness (or intensity) (I). The result is a hexagonal cone:

In Tozi, the tone (H) e daden ygül is right on the chervino, naschishane (S) characterizes the purity of the colors (1 e is much pure color, and 0 is on syvoto). It is important to analyze it, and cheton will never determine it with zero intsensivnost.

Transfer algorythm from RGB to hsm HSI can be done iz pnln, kato izpolzvat follow the formula:

Color model HSI is very popular among designer and artist, protection in the pelvis of the Osiguryava system is straight for control of tone, intensity and brightness. Lift properties rule Tozi model is very popular in the system for computer users. In the table. The show is promoted in images from a variety of and intensity of intensity, tone (± 50 °) and naschishane.

CIE XYZ model

For the purpose of combining it, an internationally standard color model has been developed. As a result of the cure from the International Commission for Illumination (CIE) experiment, determine the curve for adding to the base (worm, green and blue) color. In the basin, the system is all visible in color with a certain degree of determination on the base color. At the same time, for example, we can develop a model and reflect all colors, as seen by the chowka; For yes we will avoid denying the fortitude on the CIE, vvevedehme so-called. unrealistic or imaginary and fertile colors: X (imaginary cerven), Y (imaginary green), Z (imaginary blue).
How to describe the colors, stool on X, Y,Z all show the standard base and get on the basis of the coordinate all the standard colors. Standard curve on the additions X (λ), Y (λ), Z (λ) (Hz. Fig.) Describe the sensitivity to the average observer by standard standard, wake up:

In addition to standard color, colors and coordinates are completely creeped because of the relative colors and coordinates that you can count in the following wording:

Forest and yes whitewash, what x + y + r = 1, one way or another, what is unequivocally determined on the relative coordinate of each other is sufficient and suitable color space can be represented as a two-dimensional graph:

A set of colors, definitions, color, or CIE triangle.
Forest and yes, see the triangle on the CIE and describe the shade itself, but by no means start it out of the brightness range. For this and that, describe the brightness, se the dowel additionally, preliminarily descending from the coordinate (1/3; 1/3) (this is called the point). As a result, the product received CIE colors (see Fig.):

Tovoy sdrydzha vsechki color, we see for the average observer. The fault is in the basin of the system e, which is due to crawling, we can even see the very coincidence, or the difference from two colors,But it is located between two points on the color and space, not shining on the visual impression on the colors and the differences.

CIELAB model

Basically, it was developed at CIELAB without any problem and with a selector of non-linearity for CIE XYZ systematics from a pale point at a certain point. Under the abbreviation of LAB, it is a common practice to deconstruct the color space of CIE L * a * b *, at some point at the moment e is an international standard.
CIE L on a systematic * a * b coordinator means a lekote L (in the border from 0 to 100), and a coordinator, b - a middle position between green purple and blue-yellow flowering. Formulate for the translation on the coordinate from CIE XYZ cum CIE L * a * b * sa dadeni on-dale:

Each point (Xn, Yn, Zn) will coordinate on a white point in space CIE XYZ and

FIG. Bloom the hull and CIE L * a * b * sa presentation for two values ​​per lekot:

In comparison with the CIE XYZ systematics Euclidean spacing (√ ((L1-L2) ^ 2 + (a1 ^ * - a2 ^ *) ^ 2+ (b1 ^ * - b2 ^ *) ^ 2)) On * b * it is a lot of kindly condescending on the different colors, derived from the chowek, but the standard formula on the different colors is mainly complex for CIEDE2000.

Tsvetovi sistemi with tsvetno razlika

In color, the system YIQ and YUV color information is not represented by Kato brightness (Y) and two signals for the color distribution (IQ and UV, correspondingly).
Popularity on the tezi tsvetny system of the system is mainly on the appearance on the color TV.The security component of the camera is original in the Sivat rock, the signal in the YIQ system can be received and correctly and this way shown on the old black and white TV, and on the new color.
Secondly, maybe bi is important, plus, for these theses, space e is separated for information for color and brightness for an image. The fact is that the choke of the eye is very sensitive to the promyster in brightness and it is much smaller in the sense of the crystalline in chromaticity. Tov vi allow it and write down the color of the information on the dulbina. On the bowl, especially on the chowkot eye, because of the crawl, find the most popular algorithms for compression on images (including jpeg).

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