Snap 是一款簡單易用的交互式圖像挖剪Adobe Photoshop插件工具，可以去除或者隔離圖片中的指定物體。
Snap is an easy to use interactive image cutout tool designed to extract solid or opaque objects. Image cutout is the process of removing or isolating an object in a picture.
The extracted object can then be combined with another image or individually filtered in Adobe Photoshop or Photoshop Elements. The challenge becomes defining which parts of the image are foreground, the portion to be cutout, and those which belong to the background. Snap provides instant visual feedback by snapping an editable curve to an object's boundary even if it has vague or low contrast edges. This is made possible by utilizing unique graph-cutting and segmentation algorithms. More accurate results are achieved in a shorter amount of time than using existing tools and techniques.
For the most difficult of image cutouts, Snap also includes the ability to manually create paths using an intuitive and easily editable shape format called X-Splines. A path is an outline created by placing sequential points along an object. Think of it as connecting the dots if you will. X-Splines are designed to make user manipulations as intuitive as possible. The points that make up X-Splines can be of three different types: Cardinal, Polygon or B-Spline and can be changed before, after or during the creation of the path. Manually drawing a path is often a good solution for objects that can′t be extracted in any other way and using X-Splines is a vast improvement over existing shape and path creation methods.
