Similar to common RGB channels, HSV is also a color-based geometric model consisting of three color channels: hue (Hue), saturation (Saturation) and brightness (Value). The HSV color model is a model that describes color as how humans perceive it, and is therefore widely used in the fields of computer graphics and computer vision.
1. Hue (Hue)
The Hue channel represents the hue of a color, also known as hue. Hue refers to the position of a color on the color wheel, and its value ranges from 0 to 360 degrees. In the HSV color space, changes in hue correspond to changes in color, for example, red corresponds to 0 degrees, green corresponds to 120 degrees, blue corresponds to 240 degrees, and so on.
2. Saturation (Saturation)
The Saturation channel represents the saturation of the color, also known as vividness or purity. Saturation refers to the intensity or purity of a color and can range from 0 to 100%. In the HSV color space, a saturation of 0 corresponds to gray, and a saturation of 100% corresponds to the brightest color.
3. Brightness (Value)
The Value channel represents the brightness of the color, also known as lightness or brightness. Brightness refers to the lightness and darkness of a color, and its value ranges from 0 to 100%. In the HSV color space, a brightness of 0 corresponds to black, and a brightness of 100% corresponds to the brightest color.
By adjusting the values of these three channels in the HSV color space, the adjustment and change of the color can be realized.
In particular, when V=0, H and S are undefined, representing black. S=0, V=1, H is undefined, representing white. When S is unchanged and H is undefined, and V is between 0 and 1, it is gray with different gray levels.