tailieunhanh - Adobe Photoshop CS3 A-Z: Tools and features illustrated ready reference- P2

Tham khảo tài liệu 'adobe photoshop cs3 a-z: tools and features illustrated ready reference- p2', công nghệ thông tin, đồ họa - thiết kế - flash phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | BÉZIER CURVES Bicubic interpolation Curves created using Photoshop s Pen Btool are called Bezier bay-zee-ay curves named after French mathematician Pierre Bezier. The shape of a curve is created by the position of anchor points and direction lines that can be moved to change its shape and direction. They re used to make perfect selections around smooth or curved objects. Menu Image Image Size Shortcut - See also Bilinear interpolation NearVersion CS CS2 CS3 est Neighbor interpolation Digital photos are made up of pixels. These are discrete blocks of color and tone arranged in a grid fashion. The number of pixels in a picture is determined when the photo is taken or the print scanned. Occasionally it is necessary to change the number of pixels in the picture to make it either bigger or smaller. This task Is usually handled by the Image Size feature where there are controls to increase or decrease the pixel dimensions 1 resample the pixels 2 and choose the method of resampling 3 . The process is often called resampling or interpolating the picture and makes use of a mathematical algorithm to generate the newly sized picture. Bicubic is one of the algorithms you can select to resize your picture. It takes the longest to process the file but provides smooth graduations in the final photo. The default interpolation setting used by Photoshop can be selected via the Edit Preferences General dilaog 2 . Interpolation Quick Guide Action Original Method Enlarge Quality Photo Bicubic - Smoother Reduce Quality Photo Bicubic - Sharper Enlarge Speed Photo Bilinear Reduce Speed Photo Bilinear Enlarge Screen shot Nearest Neighbor Reduce Screen shot Bicubic - Sharper Bicubic - Sharper interpolation Menu Image Image Size Shortcut - See also Bicubic - Smoother Version CS CS2 CS3 interpolation As well as standard Bicubic interpolation Adobe includes two other options Bicubic - Sharper and Bicubic - Smoother. Bicubic - Sharper is specifically designed for occasions when you are reducing