Friday, July 23, 2010

How to Changing the background with cpac imaging pro



How to change the background
Step1. In the Adjustments menu, click Change Background.
Step2. If it is one tone background, choose the Magic Wand tool and click on the background areas.

The program will select the background of the same tone, or you can adjust the Magic Wand slider to select areas that have close tone. To select more areas, hold down the Shift key, while clicking on other areas of the background to make selection.

Stap3. Select the Hair Selection tool. Paint over the hair edge adjacent to the background area, as well as the loose strands that you want to keep in the photo. The painted areas will be highlighted in red.
If there are green areas that are not parts of the hair line, use the Selection Eraser tool to rub out the green areas.
Next step is to extract the portrait from the background. The areas that are highlighted in red are the hair line that will not be extracted. The green areas represents the portrait edges. The blue areas are the body/clothing parts that will not be extracted. Other areas that are not highlighted will be extracted.
Check if there is any other area that you want to make adjustment, then click the Extract button on the right setting bar. The program will extract the background automatically. You can change the Hair, and Edge settings if there is still some background left or the extracted areas go beyond the hair line. After adjusting the settings, click Extract again.

Step4. Click Go to Change Background Step on the right setting bar, the Select Background dialog box will appear.

Choose the desired background category and an background image, then click Select. The program will add the selected background to the picture.

Stpe5. You can make furthur adjustment to the portrait edge by using the Edge and Hair setting sliders. High values result in eliminating more hair areas, then click the Extract button again.


From the above sample, the low Hair value results in less hair area eliminated.
Step6. You can use the following tools to make over the incomplete areas:
History Brush is used to go back to the original state by applying the brush over the desired areas.
Eraser tool is used to rub out the portrait area from the background.
Cut tool is used to remove the selected portrait area
Blend with Background Brushis used to paint colors over the portrait edges and background.
Free Transform is used to change the position and size of the background.


You can also use the manu on the right to edit the background.








They are:
Chnage Background to choose a new background.
Levels to adjust light levels for the background or the portrait.
Hue/Saturation to adjust tone, change hue, or increase and decrease the saturation levels of the background.
Blur Background to make the background look softer.


Step7. Click OK to confirm background change.
Step8. In case it is difficult to disguise between the portrait area and the background area, you can manually write the foreground border line.

Using Selection Line tool, click on one side to start and left click to form a line along shirt and hair edge. For shirt, click on exact points while you can just roughly point on the hair. Right click at the other side of the picture to stop the borderlining.
Use the Hair Selection tool to draw along the hair line.

Next, use the Fill Selection tool to click in the portrait area.

Click the Extract button to change the background.


When complete,you can continue by going back to start at step 4.

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