1
Illah Reza Nourbakhsh, David Andre: Generating categorical depth maps using passive defocus sensing. Stanford University, Lumen Intellectual Property Services, August 11, 1998: US05793900 (254 worldwide citation)

A method is disclosed for generating a categorical depth map of a scene using passive defocus sensing. In a preferred embodiment three synchronized CCD cameras focused at different distances detect three images of the same scene. An image processor partitions the images into an array of regions and ...


2
Zia ur Rahman, Daniel J Jobson, Glenn A Woodell: Method of improving a digital image. Science and Technology Corporation, The United States of America represented by the Administrator of the National Aeronautics and Space Administration, Peter J Van Bergen, November 23, 1999: US05991456 (250 worldwide citation)

A method of improving a digital image is provided. The image is initially represented by digital data indexed to represent positions on a display. The digital data is indicative of an intensity value I.sub.i (x,y) for each position (x,y) in each i-th spectral band. The intensity value for each posit ...


3
Lingnan Liu: Non-linear image processing and automatic discriminating method and apparatus for images such as images of machine-readable symbols. Intermec IP Corporation, Perkins Coie, October 3, 2000: US06128414 (168 worldwide citation)

A method and apparatus for locating geometric shapes or edges thereof in data collection symbols initially samples and stores an image of light reflected from the symbol. Thereafter, two routines are performed. A first routine performs low level vision processing by identifying linked points along e ...


4
Gooitzen Siemen van der Wal, Michael Wade Hansen, Michael Raymond Piacentino, Frederic William Brehm: Modular parallel-pipelined vision system for real-time video processing. Sarnoff Corporation, William J Burke, February 13, 2001: US06188381 (147 worldwide citation)

A real-time modular video processing system (VPS) which can be scaled smoothly from relatively small systems with modest amounts of hardware to very large, very powerful systems with significantly more hardware. The modular video processing system includes a processing module containing at least one ...


5
Robert Lee Read: Mapping defects or dirt dynamically affecting an image acquisition device. March 7, 2000: US06035072 (145 worldwide citation)

Defects such as dirt, dust, scratches, blemishes, pits, or defective elements or pixels in a CCD, scanner, photocopier, or image acquiring device are dynamically detected by processing a plurality of images via a computer. A pristine object of calibration is not required. Stationary components of th ...


6
Larry Alan Westerman: Block boundary artifact reduction for block-based image compression. Sharp Laboratories of America, Chernoff Vilhauer McClung & Stenzel, March 4, 2003: US06529638 (141 worldwide citation)

Block boundary artifact reduction in decompressed digital images is accomplished by filtering the intensity of pixels in the vicinity of the block boundary. The filter utilizes filter coefficients selected from tables on the basis of the distribution of a scalar quantity describing the pixels neighb ...


7
Albert D Edgar: Method and system for enhancing digital images. Eastman Kodak Company, Dinsmore & Shohl, August 3, 2004: US06771833 (139 worldwide citation)

One aspect of the invention is a method of enhancing a digital image comprising at least one image channel. At least one spatial domain segment of a plurality of spatial domain segments of an image channel is transformed from the spatial domain to the frequency domain to create at least one segment ...


8
Sergei Nikolacevich Kryukov, Tatyana Olegovna Semenkova, Kryzstof Antoni Zaklika: Removal of block encoding artifacts. Corel Corporation, Hensley Kim & Edgington, February 21, 2006: US07003174 (136 worldwide citation)

A method of reducing artifacts in an image previously processed by block transform encoding may comprise the steps of: determining block boundaries; determining an approximate metric of artifact visibility; optionally interpolating across block boundaries; adaptively filtering luminance; optionally ...


9
Zorawar Bassi, Masoud Vakili: System and method for automated calibration and correction of display geometry and color. Geo Semiconductor, Sughrue Mion PLLC, March 26, 2013: US08406562 (135 worldwide citation)

Various embodiments are described herein for a system and method for calibrating a display device to eliminate distortions due to various components such as one or more of lenses, mirrors, projection geometry, lateral chromatic aberration and color misalignment, and color and brightness non-uniformi ...


10
Peter Schmitt, Dieter Schmidt, Guenther Kostka, Rolf Behrendt: Method and camera (apparatus) for optically capturing a screen. Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung E V, Michael A Glenn, Glenn Patent Group, April 27, 2010: US07706634 (133 worldwide citation)

A camera for optically capturing a screen, wherein the screen has an area and wherein a predetermined overall resolution is provided for the optical capture, comprises a camera support with an array of camera mounts, an array of optical individual cameras as well as an image processing device for pr ...