Some concepts in PS < from the network >

1. Bitmap: Also known as raster graphics, generally used for photo-quality image processing, is a lot of pixels like small squares of the same shape, by the position and color representation;

2. Vector diagram: Is not distortion of the picture, is generally drawn out,-----> and vector almost it;

3. Resolution: pixels on the unit length, resolution and image clarity;

4. Channel is the channel to store color information, in the channel you can see RGB three black and white images, G is the storage of green channels, R is stored red channel, B is the green channel, you see they are black and white, right? Because Photoshop white is represented, and black is not, you can now view a picture of the channel (if there is a better view of the red), a closer look at an R is the red channel, if the more white place then the more red, gray represents a little, The whole black place means no red, and if you modify one of the channels in GRB, you'll change the color, for example, if you're using a white brush for the R (red) channel, you'll get red in the white area.

5. Layer: the equivalent of a transparent film with the image, the image is the transparency of these films together in the overall effect, you can edit each layer does not affect the other layers;

6. Color mode of the image

<1>rgb color mode: Also known as additive color mode, the three primary colors constitute a variety of colors, each of the primary color brightness changes, can be from 0 to 255;

<2>cmyk color mode: Also known as subtractive mode, commonly used for printing printing, color for magenta, royal blue, yellow and yellow products;

<3>HSB color mode: (hue: Hue refers to a picture of the overall trend of the color of the picture, is a large color effect, there is a hazy feeling) ( saturation refers to the color of the bright degree, also known as the purity of color)

Color is divided into hue, saturation, brightness, to adjust the color;

<4>lab Color mode: Yumingdo (L) and color-related A, B three components. L represents lightness, A is the range from magenta to green, and B is the range from yellow to blue. L's range from 0 to 100,l=50, the equivalent of 50% of the Black; A and b range from +127 to 128, where +127 A is red, gradually transition to -128 a when it becomes green; the same principle, +127 B is yellow, and -128 B is blue. All colors are made up of these three-value interaction changes. For example, the lab value for a piece of color is L = 100,a = 0, and the color is pink. (Note: The A-axis in this mode, b-axis color and RGB, magenta more red, green more blue, yellow reddish, blue a bit bluish)

<5> Index color: Use a byte to store 256 colors and index, image quality is not high, space is small;

<6> Grayscale mode: Black and white.

<7> bitmap mode: binary storage pixels, black and white, occupy less space;

7.

Some concepts in PS < from the network >