tailieunhanh - Professional Information Technology-Programming Book part 40

Tham khảo tài liệu 'professional information technology-programming book part 40', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Matching a Knockout to Its Background Hopefully you have already collected the images you re going to include over the background image in your composite. Of course if it s a collage matching the background is probably pretty easy. In all likelihood you won t even see a background. If you do just make sure it s a color that flatters the images you re pasting on top it. Also make sure it s not lit or patterned in such a way that it detracts from the images rather than enhancing them. Since that sort of thing is always very subjective it s hard to give you more specific advice than that. On the other hand if you re making a montage there are lots of gotchas to pay attention to if you expect your end result to really look as though the photo actually happened rather than being cut and pasted together. . Matching Exposure and Color Balance The first thing you want to do is open the images at the same time and match exposure brightness and contrast and color balance. Here are the steps for this stage of the workflow. It may seem strange but you ll want to do all the abovementioned adjustments within the image. So just start by dropping each image and its layers onto your background image. 1. Go to the Layers palette and place it right alongside your composite image. Double-click the Hand tool to make the image fill as much of the screen as possible so that you can easily distinguish one image from the other. 2. Name each layer for the subject of its knockout. This ID process is important because you will be doing a lot of work with layers and layer groups in this compositing workflow. So you want to be able to easily find the objects you re looking for. Also you re going to be attaching a number of other layers to each of these images and you want to group all those layers so they can be easily identified and changed as the client requests. 3. Make your color balance and exposure adjustments. To keep complexity to a minimum and to save space try doing all of .