Abstract: Techniques are disclosed for restoring a modified document to an original state. The modified document is scanned into a digital form using an optical scanning device. The content of the modified digital document including one or more annotations is then grouped into several components, including text, images, form fields and text boxes, and marked shapes, based on corresponding component specifications. Each component is then categorized as being structured or unstructured. Structured components that correspond with representative entries in a component repository, such as text in a standard font size, weight and style, are identified as core document content. Unstructured components are identified as annotated document content or highlighted document content, depending on certain characteristics of the components. The categorized and identified components can then be presented separately or in various combinations.

Abstract: Techniques are disclosed for reconstructing the surface geometry of an object using a single image. A computing device is configured to reconstruct a surface for a colored object from a single image using surface integrability as an additional constraint. The image is captured under an illumination of three fixed colored lights that correspond to three color channels, such as red, green and blue (RGB). The RGB image can be separated into three grayscale images, with different lighting for each image, and the geometry can be reconstructed by computing the surface normals of these separate images. Depth can be estimated by integrating the surface normals.

Abstract: This specification describes technologies relating to imparting real-time priority-based network communications in an encrypted session. In general, aspects of the subject matter described can be embodied in methods that include establishing, based on cryptographic information in a reserved, random-data portion of a handshake communication, a session, receiving parameter values relating to a sub media stream, included in a header of a network communication, storing the parameter values, obtaining state information and a data payload included in a second network communication, identifying, from the state information, a purpose of the second network communication, and whether a header of the second network communication includes one or more new values corresponding to one or more of the parameters, updating one or more of the stored values based on the one or more new values, and processing the data payload based on the identified purpose and the stored parameter values.