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Class Information
Number: 382/271
Name: Image analysis > Image enhancement or restoration > Variable threshold, gain, or slice level > Based on the results of a count
Description: Subject matter wherein the threshold or quantization value derived for a particular element in the image depends upon the relative frequency of occurrence of each brightness level in a region around the image element or the number of "black" image elements at a particular location over a number of images of the same object.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8644618 Automatic evaluation of line weights Feb. 4, 2014
8630504 Auto-focus image system Jan. 14, 2014
8624923 Method of forming an image based on a plurality of image frames, image processing system and digital camera Jan. 7, 2014
8620067 Image processing apparatus and computer readable medium Dec. 31, 2013
8571271 Dual-phase red eye correction Oct. 29, 2013
8508823 Image processing method, image processing apparatus, image forming apparatus, and recording medium Aug. 13, 2013
8488138 Method for composing a reflectivity histogram and reprographic apparatus using this method Jul. 16, 2013
8478030 Image processing apparatus and computer readable medium Jul. 2, 2013
8437031 Image processing device and method for reducing an original image May. 7, 2013
8379134 Object detection and selection using gesture recognition Feb. 19, 2013
8311329 Relative threshold and use of edges in optical character recognition process Nov. 13, 2012
8311328 Electronic vision aid and electronic vision aid method Nov. 13, 2012
8224110 Image processing apparatus and image processing method Jul. 17, 2012
8199215 Image filtering Jun. 12, 2012
8189952 Image noise reduction method based on local correlation May. 29, 2012
8174737 Image reading apparatus May. 8, 2012
8139884 Blur image adjusting method Mar. 20, 2012
8121414 Image processing method, image processing apparatus, and image forming apparatus Feb. 21, 2012
7940997 Method and apparatus for enhancing contrast May. 10, 2011
7936941 Apparatus for clearing an image and method thereof May. 3, 2011
7822285 Methods and systems for locally adaptive image processing filters Oct. 26, 2010
7768524 Systems and methods for providing image rendering using variable rate source sampling Aug. 3, 2010
7729555 Video noise reduction method using adaptive spatial and motion-compensation temporal filters Jun. 1, 2010
7672525 Image processing method, program, storage medium, and apparatus for executing a quantization process of image data by error diffusion Mar. 2, 2010
7672013 Methods and apparatus for electronically trapping digital images Mar. 2, 2010
7660462 Method and apparatus for analyzing image data Feb. 9, 2010
7636493 Filter device, filtering method and filtering program product Dec. 22, 2009
7613356 Position and orientation detection method and apparatus Nov. 3, 2009
7599568 Image processing method, apparatus, and program Oct. 6, 2009
7474800 Method and apparatus for removing image compression artifacts Jan. 6, 2009
7414795 Method for driving display with reduced aging Aug. 19, 2008
7369276 Multi-level halftoning providing improved texture uniformity May. 6, 2008
7342696 Computational moire compensation Mar. 11, 2008
7339627 Method and system for automatic detection and display of aspect ratio Mar. 4, 2008
7333119 System and method for virtual coverage anti-aliasing Feb. 19, 2008
7289667 Method and apparatus for enhancing a digital image by applying an inverse histogram-based pixel mapping function to pixels of the digital image Oct. 30, 2007
7145693 Image processing apparatus and method Dec. 5, 2006
7027637 Adaptive threshold determination for ball grid array component modeling Apr. 11, 2006
7020332 Method and apparatus for enhancing a digital image by applying an inverse histogram-based pixel mapping function to pixels of the digital image Mar. 28, 2006
7019756 Apparatus and method for brightness control Mar. 28, 2006
7016086 Image forming apparatus Mar. 21, 2006
6961476 Autothresholding of noisy images Nov. 1, 2005
6771388 Halftone gradation processing method and apparatus Aug. 3, 2004
6415052 Color image processing apparatus Jul. 2, 2002
6381374 Histogram analysis method for defective pixel identification Apr. 30, 2002
6282325 Image processing technique for binarizing an image scanned by a shuttle type scanner Aug. 28, 2001
6266156 Area judging apparatus Jul. 24, 2001
6212303 Method and module system for high speed processing of item images Apr. 3, 2001
6181437 Image processing apparatus capable of producing images without jaggies at edges Jan. 30, 2001
6154573 Image processing method and image processing device Nov. 28, 2000

1 2 3

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