A video surveillance system extracts video primitives and extracts event occurrences from the video primitives using event discriminators. The system can undertake a response, such as an alarm, based on extracted event occurrences.

Video surveillance system employing video primitives

A system and method for automatically providing content associated with captured information is described. In some examples, the system receives input by a user, and automatically provides content or links to content associated with the input. In some examples, the system receives input via text entry or by capturing text from a rendered document, such as a printed document, an object, an audio stream, and so on.

Automatically providing content associated with captured information, such as information captured in real-time

A device for capturing rendered text is described. The device incorporates one or more visual sensors that receive visual information as a part of capturing rendered text. The visual sensors are collectively capable of capturing both text that is permanently printed on a page, and text that is displayed transitorily on a dynamic device. The device further incorporates a visual information disposition subsystem for disposing of visual information received by the visual sensors. The device further incorporates a package that bears the visual sensors and the visual information disposition subsystem, and is suitable to be held in a human hand.

Handheld device for capturing text from both a document printed on paper and a document displayed on a dynamic display device

A portable device having scanning, imaging or other data-capture capability is described. In some cases, the portable device can indicate to the user when enough information has been captured to uniquely identify a source document. In some cases, the portable device calculates timestamps and location-stamps indicating when and where a data capture occurred. In some cases, the portable device is controlled by gestures. In some cases, the portable scanning device has associated billing and content/service subscription information.

Data capture from rendered documents using handheld device

A system for processing data captured from rendered documents is described. The system provides a way for authors and publishers to add value to printed documents using associated supplemental material. The system can use text scanned from a document and context to identify an electronic document that corresponds to the scanned document. A user can then access supplemental material associated with the digital document.

Adding value to a rendered document

A method and system for object-based video retrieval and indexing include a configuration detection processor for deriving quantitative attribute information for video frames in a compressed video stream. The quantitative attribute information includes object data for a video frame, including the number of objects and their orientation within the video frame and the size, shape, texture, and motion of each object. A configuration comparison processor compares object data from first and second frames to determine differences between first frame video objects and second frame video objects. The configuration comparison processor has a shot boundary detection mode in which it cooperates with a shot boundary detector to identify shot boundaries within a video sequence. In a key frame selection mode, the configuration comparison processor cooperates with a key frame selector to select key frames from the video sequence. A key instance selector communicates with the configuration comparison processor during a key instance selection mode to select key instances of video objects based on differences between first and second instances of video objects. The configuration comparison processor cooperates with a camera operation detector to identify camera operations such as zoom, tracking, and panning within the video sequence. A special effects detector cooperates with the configuration comparison processor to detect special effects video edits such as wipe, dissolve, and fade. The configuration comparison processor and a query match detector enable a user to configure object-based queries and to retrieve video sequences or video frames which include a query video object.

Object-based parsing and indexing of compressed video streams

Hardware resolution of a scanner is increased without improving the quality of the scanner's sensor array or imaging optics. A first low-resolution representation of an image is generated during a first scan and a second low-resolution representation of the image is generated during a second scan. The scanner is configured to intentionally induce a motion error in either the first or second representation. A composite representation of the first and second representations is generated from the first and second representations, and a super resolution technique is used to generate a third representation of the image from the composite representation. The third representation has a higher resolution than the first and second representations.

Apparatus and method of increasing scanner resolution

A system for detecting shot boundary in a compressed video data without decompression includes a difference detector that detects content difference between frames. When the difference detector determines that a first content difference between a current frame of the current group of frames and a previous frame of a first previous group of frames is greater than a first threshold, a sharp shot boundary detector detects a sharp shot boundary within the current group of frames. When the difference detector determines that the first content difference is not greater than the first threshold but a second content difference between the current frame and a previous frame of a second previous group of frames is greater than a second threshold, a gradual shot boundary detector detects a gradual shot boundary within the current group of frames. The gradual shot boundary detector includes a pan frame detector that detects pan boundaries, a zoom detector that detects zoom boundaries, and key frame detector that detects key frames. A threshold selection unit is coupled to the difference detector to select the thresholds in accordance with the content difference detected such that the sharp shot boundary detector, the gradual shot boundary detector, and the key frame function efficiently and effectively.

System and method for automatically detecting shot boundary and key frame from a compressed video data

An imaging system includes a camera for capturing image frames, a frame pre-screen unit for pre-screening the captured image frames, a frame store unit for storing the pre-screened frames, and a refined frame mosaicing unit for generating a refined mosaic from the pre-screened image frames that are stored in the frame store unit. The frame pre-screen unit may include a coarse align unit for generating a coarse image mosaic from the pre-screened image frames, and a display for displaying the coarse image mosaic. In an embodiment, the coarse image mosaic is generated and displayed in real-time relative to the image frames that are captured by the camera. In an embodiment of the imaging system, the display is located within the camera and in another embodiment, the frame pre-screen unit and the frame store unit are located within the camera.

Image mosaicing system and method adapted to mass-market hand-held digital cameras

An optical waveguide and a shutter are used to guide light from multiple illuminated pixels on a document being scanned onto a single photosensor element. Various methods are disclosed for selecting one pixel at a time for projection onto a single sensor element. Multiple scans are required to capture all the image pixels. The data from multiple scans are then combined to form a single scanned image that has a higher optical sampling rate than the native optical sampling rate of the sensor array. Superresolution image analysis techniques developed for reconstruction of one image from a set of lower resolution images may be applied to provide a diffraction-limited high-resolution image. The waveguide as described also provides an ability to reduce scanning time for lower resolution images. In a first example embodiment, a rotating rod lens with a pattern of black and white areas is used to block/unblock optical waveguide array elements. In a second example embodiment, a thin mask is translated over the optical waveguide array elements. In a third example embodiment, an electronic display device such as a liquid crystal array is used to block/unblock optical waveguide array elements.

Yucel Altunbasak

Papers

Object-based parsing and indexing of compressed video streams

Apparatus and method of increasing scanner resolution

System and method for automatically detecting shot boundary and key frame from a compressed video data

Image mosaicing system and method adapted to mass-market hand-held digital cameras

Image scanner with optical waveguide and enhanced optical sampling rate