The principle and fast application of fireworks channel

We know that almost all the colours seen by the eye are made of three primary colors of optics: red, green, Blue (RGB) composition, and the computer wants to express 16581375 colors, it will not be silly to use the definition of 16581375 colors to express, as with nature, summed up the most basic three primary colors: R, G, B, You can determine the color of a pixel by just giving the ratio of three colors. What are the benefits of doing this? Obviously, since every color is calculated, we can change it by calculation: this is the basis of channel adjustment and even image processing!

Thus, the channel is not proprietary to Photoshop , it is just a form of expression of color. But how does the fireworks we use use the channel? This function does not separate out ah? Please use fireworks to open an image, such as this:

Then select "Filter-> Adjust color-> levels", carefully observe the pop-up dialog box, what do you see? Channel??!! Yes, that's the channel, who said fireworks didn't have a channel concept in the past? Cough, cough ... Well ... ~ ~ now knows where the channel is (the levels and curves are OK, the curve can be understood as a more advanced level adjustment tool), how do we use it?

Try to choose the channel next to the Drop-down box, there are RGB, red, green and blue, synthetic color and three primary colors have, and choose a different color can see the channel options The following chart changes, the chart reflects the color channel in the overall figure of the proportion.

Here's how to take out the channels you need:

1, remove the red channel: The Blue Channel and green channel of the output levels are set to 0 (as shown below), that is, the blue-green channel color elimination, leaving only the information of the red channel ~ This is not taken out;

2, green, blue channel;
3, CMY channel (green, magenta, yellow channel):
Here the CMY and print output in the CMY channel is different, CMY color gamut is smaller than RGB, but not completely contained in RGB, look at the figure below to know.

Because fireworks is working in RGB mode, there is no cmy beyond the RGB part of the color information, so the basic can be found accurate CMY channel in the FW can not be achieved. (Do not exclude the possibility of plug-in implementation, but if so, use is definitely not fireworks inside the color information.) In fact, Photoshop is displayed on the screen CMYK image is also approximate, because the common display itself is RGB mode ~ also can not accurately display the gamut, so the Photoshop CMYK mode to do output printing will have a partial color. ）

But the approximate is good to do. Previously said, other colors can be Sanyuan tones out, and the study of the color ring people know CMY three colors and RGB relationship is very special (r-y-g-c-b-m color ring divided into 60 degrees a "pizza" haha), see the figure below.

What happens when you try to eliminate only one of the R, G, and B channels?
It is not difficult to produce the following conclusions:
C (cyan Channel) = green Channel + blue Channel
M (Magenta channel) = red Channel + blue Channel
Y (yellow channel) = red Channel + green Channel

This is more than the single one of the channels of RGB and easy to save ~ ~

one may wonder, is not the black and white gray channel seen in Photoshop? Why is this color in here?

This is going to involve the mask, we all know a bunch of white light, through the red plastic film, only through the red, this film is what? In Photoshop, it can be understood as a mask, and a color channel is a "color mask" that filters out unwanted colors and the remainder. So, the computer inside want to express channels, there is no color difference-I care what color you, I use a template, unified expression, to show the time plus color (if not unified expression, it is not convenient to calculate, it is not convenient to deal with the image), So people use 0-255 altogether 256 states to represent the concentration of a color at some point in RGB (2 of 8 times =256 is just a byte, computer processing is based on some kind of unit, byte is a common unit, while bit is the smallest unit, one byte = 8 bits, so R-8 bit +g-8 bit + B-8, just 24 digits, called True Color, 24-bit color is so.

This unified template is a Black-and-white "color mask": Will be pure black to white divided into 256 states, each State represents a different concentration, as to what color concentration is not important, I give him what color is what color (color-giving method has several kinds of methods, their own research), so, The actual expression of the channel in the computer comes out--it's black and white gray. Color is added to the back.

How can you remove the color information of this color channel?

The answer is mixed mode (a method of calculating colors in different layers, do not understand the help of fireworks or Photoshop, in our deployment of color channels above a black or white layer, and then set this layer of blending mode to "saturation", color information is removed.

As for my previous tutorial and the owner of the recent tutorial, with the Fireworks 8 Mixed mode Why can achieve the channel, it is obvious? Fireworks 8 Blending mode has been added to the R, G, b channel calculation method.

Fireworks in the channel display has been achieved, specific how to apply to their own research or refer to the Photoshop Channel tutorial. Fireworks Channel Tutorial Currently very few, I once had the idea of serialization, but the school, there is no time and energy, I hope enthusiastic friends work together to fill this blank.

Attachment: How to use the channel quickly in fireworks?

Method 1, using channel Plug-ins:

Download Address:Fw_tongdao_command_v0.9.rar
Using tutorials: download and watch

Method 2, define the style yourself:

Select a component and use the color-level method to pull up the desired channel. Then add a "color fill" effect, fill the black, and select "Saturation" in mixed mode. Finally select this component, add a style, note that the "effect" of all options other than the front check to remove, so that the entire process of creating a channel to save the style, and then use only in the style panel to click inside. The same way to make other color channel style, in the future with how you use ~ ~ This method and PS that channel Panel has not much difference, recommended use !