Patent ID: 7668379
Filing Date: 2010-02-23
Classification: G06T

Abstract:
1. Apparatus for processing image data, comprising storage means, processing means and manual input means, wherein said storage means is configured to store said image data and said image data includes a plurality of components defined by a hierarchy of data processing nodes, and said processing means is configured to process each of said data processing nodes in turn, wherein: said data processing nodes include one or more standard nodes and one or more switch nodes, each of the one or more switch nodes having at least two child nodes one of which is the designated child node of said switch node, and each of the one or more standard nodes having one or more child nodes; and said processing means is configured to: process the one or more standard nodes only when each of its child nodes has been processed; process the one or more switch nodes when only its designated child node has been processed; and save a version of said image data by recording a state of each switch node in the hierarchy of data processing nodes by recording which child node of each switch node is the switch node's designated child node.