Photoshop Getting Started Tutorial (vi): Channel

Learning experience: When most people hear the passage. There may be a sense of fear, because the "channel" is not as easy to understand as "layer" and daunting. The essence of "channel" is actually the information that stores the picture, compares a picture to a website, then the channel is the backstage of the website, store the data of the website. Editing a channel is equivalent to editing the image information directly, which is equivalent to writing a website code. It's a bit difficult for beginners. But not to learn, the common use of the channel is to save the selection (alpha channel), and the second is to cutout.

Detailed channel:

Channel only black, white, gray three colors.

For RGB mode images, there are three channels of red, green, and blue.

For CMYK mode image, there are four kinds of channels, cyan, magenta, yellow and black.

A channel is a complex abstraction, and a book that deals with signal processing and digital image processing is easier to understand. Prior to the multi-practice, also helps to understand the channel. Here's a walkthrough to help you understand the channel.

Example explanation: 1. Channel cutout. Through the channel, the flame is keyed out.

2. Channel storage selection.

Right-click within the selection, select Save Selection, click OK, view the channel panel, and a new channel ALPHA1 appears. The selected selection is white in the channel and black is not selected. You can load a selection by holding down CTRL and clicking the left mouse button.

Video Demo Address: http://v.youku.com/v_show/id_XOTAwNDM3NjU2.html

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Photoshop Getting Started Tutorial (vi): Channel