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Model based image editing and correction
| Details |
Inventors: Lawton, Daryl T.; Monson, John A.;
Assignee: Microsoft Corporation (Redmond, WA)
Primary Examiner: Powell; Mark R.
Assistant Examiner: Nguyen; Thu
Attorney, Agent or Firm: Leydig, Voit & Mayer, Ltd.
A system and method is described for automatically editing digital images. An image to be edited is selected and registered with a model that is an abstract of features and attributes common to a category of images to which the selected image belongs. In the illustrated embodiment, a human face is used as an example of an image to be edited and the matching model is a representation of features and attributes common to all human faces. Many other images of objects may also be edited using the techniques of the invention, as long as a general class of objects to which an image belongs is amenable to being represented by a model comprising a set of common features or attributes. A library of different models is available to the user for selecting the model matching the image to be edited. The library includes different models of the same object in different orientations and may also include models of different objects. After the appropriate model is selected, the user is prompted to register the details of the selected image with the generalized features and attributes of the selected model. Editing processes or tools, which are linked to the model, are then automatically appled to the image in order to perform a desired editing function. In addition to applying editing techniques to existing images in a larger image, the invention enables a user to paste and blend images into another, larger image--e.g., create a morphing effect by pasting one persons head over the head of another in an original image. |
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DETAILED DESCRIPTION The present invention provides for the automatic application of digital image editing effects to a selected object in a digital image.
Attributes of the object to be edited are interactively registered with the corresponding attributes in an abstract model of the type of object.
An editing effect is then automatically applied to the selected object, using the constraints determined by the properties of the model and the registered attributes.
Models include both two and three-dimensional information.
In two dimensions, models correspond to different views of an object.
These are represented as two dimensional, relational graphs expressed in terms of junctions, boundaries and regions and a small set of spatial relations.
These two dimensional models can be superimposed on a image and deformed in the same manner as a image, but the components of the model are geometrical objects with procedural attachments for performing different editing operations.
Models also include three dimensional information, either in the form of a three dimensional object model that can be directly manipulated to produce a two dimensional view or as a set of distinct two dimensional models each of which corresponds to a different view of the three dimensional object at a selected orientation.
To register a model with an object in an image, the user first selects the view corresponding to a two dimensional model.
This can be done in two different ways: either with through direct manipulation of a 3D model until it is at the same orientation as the object and a corresponding 2D model is generated or by selecting from a set of different views.
Once the model orientation has been selected, a process is initiated for prompting a user to locate attributes in the object that match the attributes in the model.
In the model, the attributes to be directly registered with the object in the original image are represented by nodes that define distinct points along a boundary, such as discontinuities and local maxima of curvature
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Image Analysis 
