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Browse by Category: Main > Optical & Optics
Class Information
Number: 382/270
Name: Image analysis > Image enhancement or restoration > Variable threshold, gain, or slice level
Description: Subject matter wherein quantization of an input analog or gray scale image to produce an output gray scale image or bit map utilizes a threshold, gain or slice level which self-adjusts according to characteristics such as the contrast or brightness of the image or portion of the image being processed.










Sub-classes under this class:

Class Number Class Name Patents
382/272 Based on a local average, mean, or median 324
382/273 Based on peak levels 171
382/271 Based on the results of a count 101


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8682095 Method for recognizing markers using dynamic threshold and learning system based on augmented reality using marker recognition Mar. 25, 2014
8639055 Automated underwater image restoration via denoised deconvolution Jan. 28, 2014
8630019 Image processing apparatus, method of controlling the image processing apparatus, and storage medium Jan. 14, 2014
8630505 Image processing device including definition enhancement Jan. 14, 2014
8600158 Method and system operative to process color image data Dec. 3, 2013
8594446 Method for enhancing a digitized document Nov. 26, 2013
8594456 Image denoising method Nov. 26, 2013
8576456 Secondary scan to ensure transient document erasure Nov. 5, 2013
8576447 Error diffusion halftoning with bandpass noise shaping Nov. 5, 2013
8577183 Resolution on demand Nov. 5, 2013
8571354 Method of and arrangement for blurring an image Oct. 29, 2013
8571346 Methods and devices for defective pixel detection Oct. 29, 2013
8571329 System and method for searching digital images Oct. 29, 2013
8571307 Method and system operative to process monochrome image data Oct. 29, 2013
8571271 Dual-phase red eye correction Oct. 29, 2013
8565549 Image contrast enhancement Oct. 22, 2013
8559082 Image processing apparatus for gamma conversion of image data Oct. 15, 2013
8559746 System, method, and apparatus for smoothing of edges in images to remove irregularities Oct. 15, 2013
8532422 Image restoring device and image restoring method Sep. 10, 2013
8532168 Receiver and method for adjusting adaptive equalizer of receiver Sep. 10, 2013
8503815 Highlight recovery using digital lighting module Aug. 6, 2013
8503814 Method and apparatus for spectrum estimation Aug. 6, 2013
8498465 Accurate determination of the shape and localization of metallic object(s) in X-ray CT imaging Jul. 30, 2013
8498494 Method and apparatus for processing a digital image signal, and a recording medium having recorded thereon a program for executing the method Jul. 30, 2013
8494277 Handwritten character recognition based on frequency variations in characters Jul. 23, 2013
8494227 System and method for using three dimensional infrared imaging to identify individuals Jul. 23, 2013
8494278 Handwritten character recognition based on frequency variations in characters Jul. 23, 2013
8478065 Pixel processing Jul. 2, 2013
8472713 Image processor, image processing method, and computer-readable medium Jun. 25, 2013
8447088 X-ray imaging system, x-ray imaging method, and computer-readable medium storing x-ray imaging program May. 21, 2013
8437046 Image processing apparatus and method for outputting an image subjected to pseudo-halftone processing May. 7, 2013
8437568 Automated underwater image restoration via denoised deconvolution May. 7, 2013
8437569 Automated underwater image restoration via denoised deconvolution May. 7, 2013
8433096 Operation control map, display unit, and white line detection apparatus Apr. 30, 2013
8432563 Systems and methods for dynamically re-configuring imager and caching modules to optimize raster image processing performance Apr. 30, 2013
8427706 Error diffusion halftoning techniques and configurations Apr. 23, 2013
8422079 Image forming apparatus and image correction method for correcting scan-line position error with error diffusion Apr. 16, 2013
8406554 Image binarization based on grey membership parameters of pixels Mar. 26, 2013
8401299 Character line recognition method and character line recognition device Mar. 19, 2013
8384959 Threshold matrix generating method, image data generating method, image data generating apparatus, image recording apparatus and recording medium Feb. 26, 2013
8380001 Edge adaptive deblocking filter and methods for use therewith Feb. 19, 2013
8363278 Method and apparatus capable of producing FM halftone dots in high speed Jan. 29, 2013
8363279 Method and device for setting multiple tones in halftone process to prevent mixing of adjacent ink dots Jan. 29, 2013
8351733 Image sharpening processing device, method, and software Jan. 8, 2013
8351707 Image processing apparatus, image forming apparatus, image processing system, and image processing method Jan. 8, 2013
8346011 Reducing noise in an image Jan. 1, 2013
8339673 Method and apparatus for improving edge sharpness with error diffusion Dec. 25, 2012
8335391 Image processing apparatus and method for target pixel noise reduction Dec. 18, 2012
RE43853 Method for concealing dark defect in image sensor Dec. 11, 2012
8320021 Image processing performing error diffusion based on a combination of half-tone frequency and zoom level Nov. 27, 2012

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