HSV (Hue Saturation Value)

Alternative representations of the RGB color model - HSV, HSB, HSL. HSV cylinder RGB to HSB conversion online: http://colorizer.org/

7 flashcards · Computer Science · by lakesare

  1. HSB vs HSL vs HSV?

    HSB - hue saturation brightness HSL - hue saturation lightness HSV - hue saturation value HSB === HSV! Basically, Hue is the same for HSB and HSL but the Saturation takes different values and Brightness and Lightness are also different.

  2. Why were the HSV&HSL representations of RGB defined?

    To more closely align with the way human vision perceives colors. HSL (hue, saturation, lightness) and HSV (hue, saturation, value) were designed in the 1970s by computer graphics researchers to more closely align with the way human vision perceives color-making attributes. Most televisions, computer displays, and projectors produce colors by combining red, green, and blue light in varying intensities—the so-called RGB additive primary colors. The resulting mixtures in RGB color space can repro…

  3. How to turn orange with sRGB values R = 217, G = 118, B = 33, to a less saturated orange?

    We would need to drag the sliders to: R: -31 G: +24 B: +59 In an attempt to accommodate more traditional and intuitive color mixing models, HSV model for computer display technology in the mid-1970s was introduced.

  4. Explain: Hue Saturation Value

    Hue represents the color type. It can be described in terms of an angle on the circle, where 0 is red. Red falls between 0 and 60 degrees. Yellow falls between 61 and 120 degrees. Green falls between 121-180 degrees. Cyan falls between 181-240 degrees. Blue falls between 241-300 degrees. Magenta falls between 301-360 degrees. Saturation represents how nongrey the color is. The lower the saturation value, the more gray is present in the color, causing it to appear faded. Value represents the bri…

  5. Here is a code to convert RGB (in the range [0, 1]) to HSB: What is max and min?

    max: maximum value of (r, g, b) min: minimum value of (r, g, b) The mod 2π is there to place the angle in the range between 0 and 2π) cmax = max(r, g, b) # maximum of r, g, b cmin = min(r, g, b) # minimum of r, g, b diff = cmax-cmin # diff of cmax and cmin. Hue calculation :- if cmax and cmin equal 0, then h = 0- if cmax equal r then compute h = (60 * ((g – b) / diff) + 360) % 360- if cmax equal g then compute h = (60 * ((b – r) / diff) + 120) % 360- if cmax equal b then compute h = (60 * ((r –…

  6. Here is how saturation is calculated in HSB: Name an RGB color that would gather s=0 in HSB. Keep RGB (in the range [0, 1])

    RGB(0.15, 0.15, 0.15)

  7. What is the formula for brightness in HSB?

    Brightness is a measure of the overall intensity of the light, and it's calculated simply by taking the biggest component of r, g, b.