Abstract: An iris recognition system and method for operating same is disclosed. The iris recognition system includes an image sensor, a buffer, a comparator, autofocus logic, and gain control logic. The image sensor is configured to obtain at least one image from a camera. The buffer communicatively connected to the image sensor stores values associated with the pixels in the image sensor. The comparator communicately connected to the buffer obtains a coarse segmentation of an iris of a subject. The autofocus logic for adjusts the focus of a lens associated with the camera. The gain control logic adjusts the gain of the image sensor. The functions of obtaining a coarse segmentation, adjusting the focus of the lens, and adjusting the gain are based on the locations of the pixels with the highest value in the image sensor as stored in the buffer.

Abstract: A method and apparatus for strobed image capture includes stroboscopic illumination synchronized with one or more cameras to improve a signal to noise ratio, reduce motion blur and avoid object damage in sensor systems used to analyze illumination sensitive objects.

Abstract: A method and apparatus for strobed image capture includes stroboscopic illumination synchronized with one or more cameras to improve a signal to noise ratio, reduce motion blur and avoid object damage in sensor systems used to analyze illumination sensitive objects.

Abstract: A method and projection system for distorting a recording of a plurality of projected frames is disclosed, comprising a high frame rate display configured to impose a modulation on the projected frames at a frequency that is above the critical fusion frequency of the human visual system, wherein the modulation is of one of shutter width relative to shutter spacing, brightness, frame period, and pseudo-rastering. The high frame rate display may be a tonal display. The projection system may further include hardware for producing low frame rate imagery; an input buffer operatively coupled to said hardware for receiving one of a serial bit stream or blocks of data so as to store at least a predetermined portion of a frame; and a sub-frame generator operatively coupled to said input buffer and to said high frame rate tonal display for applying mathematical modulation techniques to said at least a predetermined portion of a frame.

Abstract: A method and apparatus for securing and, optionally, distributing an information stream by divided the information stream into a collection of segments and compressing the segments, rearranging the order of the segments and encrypting the segments.

Abstract: A method and apparatus for securing and, optionally, distributing an information stream by divided the information stream into a collection of segments and compressing the segments, rearranging the order of the segments and encrypting the segments.

Abstract: A method and apparatus for preserving the dynamic range of a relatively high dynamic range information stream, illustratively a high resolution video signal, subjected to a relatively low dynamic range encoding and/or transport process(es). A relatively high dynamic range information stream is subjected to a segmentation and remapping process whereby each segment is remapped to the relatively low dynamic range appropriate to the encoding and/or transport process(es) utilized. An auxiliary information stream includes segment and associated remapping information such that the initial, relatively high dynamic range information stream may be recovered in a post-encoding (i.e. decoding) or post-transport (i.e., receiving) process.

Abstract: A method and apparatus for designing an iris biometrics system that operates in minimally constrained settings. The image acquisition system has fewer constraints on subjects than traditional methods by extending standoff distance and capture volume. The method receives design parameters and provides derived quantities that are useful in designing an image acquisition system having a specific set of performance requirements. Exemplary scenarios of minimally constrained settings are provided, such as a high volume security checkpoint, an office, an aircraft boarding bridge, a wide corridor, and an automobile.

Abstract: A method and apparatus for strobed image capture includes stroboscopic illumination synchronized with one or more cameras to improve a signal to noise ratio, reduce motion blur and avoid object damage in sensor systems used to analyze illumination sensitive objects.

Abstract: A method and apparatus for creating multiple unique copies of content is disclosed. In one embodiment, at least two content versions are provided. The at least two content versions are alternated in order to provide uniquely marked content. In another embodiment, a plurality of content versions are provided. Content is unlocked in accordance with a keyset. In another embodiment, a content stream having a plurality of segments is provided. One or more segments are selected from the content stream in accordance with a keyset.

Abstract: A method and concomitant apparatus for compressing, multiplexing and, in optional embodiments, encrypting, transporting, decrypting, decompressing and presenting high quality video information in a manner that substantially preserves the fidelity of the video information in a system utilizing standard quality circuits to implement high quality compression, transport and decompression.

Abstract: A method for frustrating unauthorized duplication of at least a portion of a sequence of images being embodied in digital data in a given order in a bitstream, the method including: storing data corresponding to an individual one of the plurality of images in at least one memory device in the given order; and, reading the data out from the at least one memory device in a pseudorandom order as part of the bitstream to provide a rearranged order of digital data different from the given order and adapted to frustrate conventional display of the sequence of images.

Abstract: A pre-processor partially or fully decompresses a compressed video bitstream and possibly lightly compresses the resulting partially/fully decompressed video data to generate video data in a second format different from that of the original bitstream. The video data in the second format is then stored for subsequent retrieval and possible further processing for display. By pre-processing the compressed video bitstream, the subsequent retrieval and further processing is able to achieve real-time display of the video content of the original bitstream using relatively inexpensive equipment. Depending on the implementation, the subsequent further processing may involve undoing the light compression and/or completing the decompression of the original bitstream to generate display-ready video data.

Abstract: A method and apparatus for preserving the dynamic range of a relatively high dynamic range information stream, illustratively a high resolution video signal, subjected to a relatively low dynamic range encoding and/or transport process(es). The invention subjects the relatively high dynamic range information stream to a segmentation and remapping process whereby each segment is remapped to the relatively low dynamic range appropriate to the encoding and/or transport process(es) utilized. An auxiliary information stream includes segment and associated remapping information such that the initial, relatively high dynamic range information stream may be recovered in a post-encoding (i.e. decoding) or post-transport (i.e., receiving) process.

Abstract: A method and apparatus for preserving the dynamic range of a relatively high dynamic range information stream, illustratively a high resolution video signal, subjected to a relatively low dynamic range encoding and/or transport process(es). The invention subjects the relatively high dynamic range information stream to a segmentation and remapping process whereby each segment is remapped to the relatively low dynamic range appropriate to the encoding and/or transport process(es) utilized. An auxiliary information stream includes segment and associated remapping information such that the initial, relatively high dynamic range information stream may be recovered in a post-encoding (i.e. decoding) or post-transport (i.e., receiving) process.

Abstract: A system for deterring unauthorized reproduction of a video presentation including a plurality of images to be displayed and method for operating the system. The system includes an encoder for encoding a signal for transmission over a vulnerable communications link to a decoder. The encoder includes: a first memory having a first plurality of addressable memory locations for storing at each of the locations data corresponding to a portion of at least one of the images to provide an array of data; and, a randomizer for pseudo-randomly addressing the first memory to provide a pseudo-random data signal corresponding to the one of the images.

Abstract: A subjective evaluator delineates regions of an information space to be encoded in a qualitatively preferential or non-preferential manner such that the encoded information space comprises one or more of normal, emphasized or de-emphasized information content.

Abstract: De-interlacing of interlaced image fields to obtain non-interlaced image frames includes removing the blank lines of each image field and removing one-half of the pixels of the remaining lines of each image field, thereby to obtain image frames having one-half the number of lines (i.e about one-half the vertical resolution) and one-half the number of pixels in each horizontal line (i.e. about one-half the horizontal resolution). Removing the blank lines may include interpolating pixel values for lines in the positions of the blank lines from the pixel values of adjacent lines, retaining the interpolated lines, and removing the adjacent lines, thereby to substantially reduce vertical jitter that would be caused by the one-half line positional difference between adjacent image fields. The invention has the advantage of greatly simplifying the implementation of such de-interlacing arrangement.

Abstract: A method and apparatus for securing and, optionally, distributing an information stream by divided the information stream into a collection of segments and compressing the segments, rearranging the order of the segments and encrypting the segments.

Abstract: A method and concomitant apparatus for preserving the dynamic range of a relatively high dynamic range information stream, illustratively a high resolution video signal, subjected to a relatively low dynamic range encoding and/or transport process(es). The invention subjects the relatively high dynamic range information stream to a segmentation and remapping process whereby each segment is remapped to the relatively low dynamic range appropriate to the encoding and/or transport process(es) utilized. An auxiliary information stream includes segment and associated remapping information such that the initial, relatively high dynamic range information stream may be recovered in a post-encoding (i.e. decoding) or post-transport (i.e., receiving) process.