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Class 382/168 - HISTOGRAM PROCESSING


Subclass of Class 382 - Image analysis
Definition: Subject matter wherein a representation of the frequency
No. of patents: 631
Last issue date: 05/29/2012


1                      
NumberTitleIssue Date
8189912Efficient histogram storage
A histogram has ranges, a value for each range, and a time value. A pattern is generated, having a zero value for each range having a zero value, and a one value for each range having a non-zero value. Any non-zero values of the ranges are compressed into a compress...
05/29/2012
8170336Image processing apparatus, image forming apparatus, image processing method and computer-readable recording medium
An average value calculating section calculates, for respective color components, an average value of pixel values within a pixel block, to define the calculated average values as a pixel value of a pixel of interest. A histogram generating section obtains, for resp...
05/01/2012
8170337Video processing apparatus and video processing method
According to one embodiment, a video processing apparatus includes a histogram generator, a tone curve generator, a blend parameter generator, and a blending module. The histogram generator generates a histogram based on a luminance level of a pixel of a video signa...
05/01/2012
8144985Method of high dynamic range compression with detail preservation and noise constraints
A method for high dynamic range compression uses a modified cumulative histogram as a compression curve. This curve is computed from the cumulative histogram of the image with constraints that the local derivative on the curve does not exceed a certain limit. The li...
03/27/2012
8094934Object detection system
An object detection system is provided a plurality of image capture units for capturing images of surroundings of the system, a distance information calculation unit for dividing a captured image which constitutes a reference of captured images captured by the plura...
01/10/2012
8094935Representative color extracting method and apparatus based on human color sense and data histogram distributions
A histogram generating section generates a histogram for each channel of a color space which shows colors of pixels constituting an image, in which tone levels of said channel are divided into plural intervals as classes, and frequency of appearance of tone levels o...
01/10/2012
8090200Redundancy elimination in a content-adaptive video preview system
A content-adaptive video preview system (100) allows to go faster through a video than existing video skimming techniques. Thereby, a user can interactively adapt (S1) the speed of browsing and/or the abstraction level of presentation. According...
01/03/2012
8068668Device and method for estimating if an image is blurred
A method for estimating if an image (14) is either blurred or sharp includes the steps of (i) determining an image gradient histogram distribution (410) of at least a portion of the image (14), and (ii) comparing at least a portion of the image ...
11/29/2011
8055072Image display panel and driving method thereof
The invention provides image display panels. The image display panel comprises a histogram generator, a tone slope generator, and an image transformer. The histogram generator receives an original image, counts the pixels of different gray levels to generate a histo...
11/08/2011
8041111Subjective and locatable color theme extraction for images
Systems, methods, and program products for subjective and locatable color theme extraction for images. Determining a color density for each of a plurality of colors in an image where each of the plurality of colors belongs to a color space, extracting one or more di...
10/18/2011
8023730Method that improves human interpretation of color images with limited spectral content
The present invention relates to image processing in general and more specifically to methods and means facilitating the human detection of physical object representations in colour images with a wide range of applications such as aviation and air transport, land tr...
09/20/2011
8023731Apparatus and method for histogram analysis of image and luminance compensation apparatus using the same
Disclosed is an apparatus and method for analyzing a histogram of an image, the apparatus comprising an image input module for buffering an input image, a block calculator for performing a blocking operation for dividing the image into pixel blocks of a predetermine...
09/20/2011
8023732Accelerated image registration by means of parallel processors
A method is provided for accelerating non-rigid image registration, using parallel processors. To that end, on a commercially available graphics card, a block-matching algorithm is implemented, which, by histogram-based similarity standards, calculates the motion ve...
09/20/2011
8023733Image processing device, image processing method, image processing program, and integrated circuit
The grayscale of an input signal is converted without amplifying noise components thereof. A grayscale conversion portion performs grayscale conversion on an input signal IS to create a converted signal TS, a noise reduction degree determining portion determines a n...
09/20/2011
8019155Digital object information via category-based histograms
Embodiments of the present invention relate to an effective method of representing a set of digital objects across at least two category-based dimensions for facilitating efficient access to such objects. These digital objects are typically media objects such as dig...
09/13/2011
8014601Pattern recognizing apparatus, pattern recognizing method and pattern recognizing program
A pattern recognizing method for matching a binary or ternary reference image and an input grayscale image, having a precision similar to the method in which a plurality of binary reference images are generated by supposing settable various binarization threshold va...
09/06/2011
8009907Localized, adaptive video contrast enhancement using controlled histogram equalization
An adaptive histogram equalization-based approach improves contrast in a video signal. For each video frame, the histogram of the pixel luminance values is calculated. The calculated histogram is divided into three programmably-sized regions that are equalized indep...
08/30/2011
7983482Matching apparatus, image search system, and histogram approximate restoring unit, and matching method, image search method, and histogram approximate restoring method
A matching technology for determining the similarity between two objects at high velocity with high precision. The matching method for comparing a set of feature points of two objects projected to an N-dimensional space and determining the similarity between the two...
07/19/2011
7920741System and method for image processing using integral histogram convolution
A system and method for performing integral histogram convolution for filtering image data is disclosed. The method may include generating an initial histogram for a kernel region of an input image comprising two or more column histograms. Each histogram may include...
04/05/2011
7916943Image determining apparatus, image determining method, image enhancement apparatus, and image enhancement method
Image determining apparatuses, image determining methods, image enhancement apparatuses, and image enhancement methods are provided. An image determining apparatus according to an exemplary embodiment of the present invention includes: (A) a histogram data generatio...
03/29/2011
7916942Image determining apparatus, image enhancement apparatus, backlight image enhancement apparatus, and backlight image enhancement method
Image determining apparatuses, image enhancement apparatuses, backlight image enhancement apparatuses, and backlight image enhancement methods are provided. ...
03/29/2011
7912283Image enhancement using object profiling
The identification of a specific object in a visual image compromised by the addition of noise, too little or too much light, cluttered with other objects that confuse the user, or having other image defects and using novel techniques that make the image appear more...
03/22/2011
7894668System and method for digital image intensity correction
The present invention provides a method and apparatus to enhance the image contrast of a digital image device while simultaneously compensating for image intensity inhomogeneity, regardless of the source. The present invention corrects intensity inhomogeneities prod...
02/22/2011
7889923System and method for sparse histogram merging
A method for merging histograms may include generating a histogram for a region of an image, the histogram including bucket values representing a count of pixels having the same pixel value or a weighting dependent on the pixels. The method may include maintaining a...
02/15/2011
7889922Method and system for histogram calculation using a graphics processing unit
A method for histogram calculation using a graphics processing unit (GPU), comprises storing image data in a two-dimensional (2D) texture domain; subdividing the domain into independent regions or tiles; calculating in parallel, in a GPU, a plurality of tile histogr...
02/15/2011
7885462Image processing method and system using gain controllable clipped histogram equalization
An image processing method and system using gain-controllable clipped histogram equalization, in which the image processing method includes the steps of as obtaining a brightness histogram, computing a mean brightness of an image signal, determining a clipping rate ...
02/08/2011
7869652Flicker correction for moving picture
In flicker correction of a moving picture consisting of a plurality of frames, moving averages of accumulative histograms are calculated for each frame on image data. Then, gamma tables for correcting the image data of a frame in the plurality of frames are made suc...
01/11/2011
7865014Video auto enhancing algorithm
A method for enhancing a video includes applying a linear histogram stretch, a gamma correction, and sigma row, column, and temporal filters to the video. ...
01/04/2011
7856142Methods and systems for detecting character content in a digital image
Embodiments of the present invention comprise systems and methods for detecting glyph pixels in a rasterized image. ...
12/21/2010
7848570Memory reduction technique for statistics accumulation and processing
To provide a memory efficient method and system for statistical data accumulation and processing, data is divided into multiple data zones and divided into subgroups of memories. A separate memory bin is assigned for each of the subgroups, and this memory bin is sha...
12/07/2010
7844112Device and method for enhancing image contrast
We describe a device that dynamically increases the contrast of the effective gray level based on the gray level distribution of serial images, performs soft-transfer of dynamic contrast adjustment curve when a scene switch occurs thereby realizing adaptive contrast...
11/30/2010
7840066Method of enhancing a digital image by gray-level grouping
Methods for enhancing the quality of an electronic image, including automated methods for contrast enhancement and image noise reduction. In many embodiments the method provides for grouping the histogram components of a low-contrast image into the proper number of ...
11/23/2010
7826663Real time analytics using hybrid histograms
A system, method and program product for processing a stream of data events using hybrid histograms. A system is provided that includes: a hybrid histogram that provides a running statistical summary of the stream of data events, wherein the hybrid histogram include...
11/02/2010
7826662Digital camera provided with gradation correction function
A histogram is generated from image data, and two distribution areas are detected. A gamma curve used for gamma correction of the image data is changed into a gamma curve corresponding to the luminance ranges of the two distribution areas. The luminance values of ea...
11/02/2010
7822273Method and apparatus for automatic corrosion detection via video capture
In order to prevent human injury during the inspection of tanks carrying caustic material this device has been created which will allow a tank to be inspected remotely. A camera is used to take an image of the tank surface and software is incorporated into the metho...
10/26/2010
7822272Adaptive histogram equalization for images with strong local contrast
The present invention relates to a method, apparatus and computer program product for contrast enhancement of images based on adaptive histogram equalization. In particular it relates to preventing adaptive histogram equalization from causing fading artifacts and ob...
10/26/2010
7817854Method and apparatus for identifying the rotation angle and bounding rectangle of a digitized form
Methods and apparatus for determining the skew angle of a digitized form scanned at an angle to the original page are described. The method determines a rotation angle and a boundary rectangle of best fit. Sections of the digital image in the form of thin strips are...
10/19/2010
7809188Digital camera and method
Digital camera contrast enhancement with piecewise-linear transform with lower and upper cutoffs for the transform determined from histogram analysis with a green color conversion approximation for images and IIR parameter filtering for videos. ...
10/05/2010
7805001Method and apparatus for determining asymmetry in an image
A method for determining asymmetry in an image such as an MR image of a brain comprises determining a symmetry plane to divide the image into a first part and a second part representative of, for example, the hemispheres of the brain. The probability distributions o...
09/28/2010
7792359Methods and systems for detecting regions in digital images
Embodiments of the present invention comprise systems, methods and devices for detection of image regions using a masking condition and an entropy measure. ...
09/07/2010
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