tailieunhanh - Photoshop CS5_tập 5

Tham khảo tài liệu 'photoshop cs5_tập 5', công nghệ thông tin, đồ họa - thiết kế - flash phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Making difficult selections with the Refine Edge feature 5 5 Using the Radius slider in the Edge Detection change the Radius value to 170. This may seem like a rather drastic radius selection but you can see that this masked the hair fairly well. The issue you now have is that by increasing the radius to get a better selection of hair you also degraded the edge selection of the shoulder beneath the hair. You will use the Erase Refinements tool to help you clean up your selection. 6 Click and hold down on the Refine Radius tool and select the Erase Refinements tool. Clean up your selection using the Erase Refinements tool. 7 Position your cursor over an area in your image where you would like to clean up the selection. Note that you can increase or decrease your brush size by pressing the left bracket or right bracket keys. 8 Start painting over the areas that you do not want the refinements to take place In this example this is in the suit area. The selection before and after cleaning up the refinements. Lesson 5 Making the Best Selections 121 5 Making difficult selections with the Refine Edge feature 9 Select Layer Mask from the Output drop-down menu and press OK. Since you have applied a layer mask your results are shown as a transparent selection. Save and close the file. The completed selection. Using Quick Mask Earlier in this lesson you learned how to add to and subtract from selections. Another method for modifying selections is to use Quick Mask. Rather than using selection tools to modify the selection you ll use the Paint Brush tool in the Quick Mask mode and paint to modify your selection. This is a type of art therapy for those who are selection-tool-challenged. Note that when creating a mask by default it is the inverse of a selection it covers the unselected part of the image and protects it from any editing or manipulations you apply. In this lesson you will create a mask using the Quick Mask feature save the selection and then copy and paste the .