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| Number | Title | Issue Date |
| 8189113 | Image processing apparatus, video reception apparatus, and image processing method According to one embodiment, a video display apparatus having a smoothing processing unit inputs luminance signals of pixels which form an image, acquires histogram data by counting the numbers of pixels for respective levels of the input luminance signals, sets a c... | 05/29/2012 |
| 8174623 | Image adjustment device and method thereof The present invention provides a device and an image adjustment method by simultaneously adjusting the luminance and the chrominance of an image. The device comprises a luminance analysis device, a contrast adjusting device, a luminance adjusting device, a chrominan... | 05/08/2012 |
| 8174622 | Data processing method and data processing device for histogram-based nonlinear conversion A data processing method of executing nonlinear conversion for pixel data, comprising: a first step of obtaining an amount of statistics corresponding to the number of pixel data having a gradation value in a predetermined range from a plurality of pixel data for di... | 05/08/2012 |
| 8159616 | Histogram and chrominance processing The present invention relates to a method and corresponding system for improving the perceived visual quality of images for instance displayed on a color television screen. According to the invention, there is provided a means for carrying out histogram processing (... | 04/17/2012 |
| 8139157 | Video display apparatus that adjusts video display parameters based on video picture type A video display apparatus generates luminance information for individual frames of a video signal from histograms of the luminance component of the video signal, and classifies the content of the video signal on the basis of this information. Color saturation inform... | 03/20/2012 |
| 8125569 | Dynamic contrast on displays using average picture level and histogram analysis Average picture level (APL) of a display and, in examples, histogram information is used to dynamically adjust the display contrast, or “gamma”, using an exponential function. APL can also be used for DC transmission adjustment and black/white stretch. ... | 02/28/2012 |
| 7956932 | Image signal processing apparatus, method of controlling the same, and television signal receiving apparatus According to one embodiment of the invention, a smoothing module is configured to smooth and reduce grayscale differences in a plain area of an input digital image signal according to a collection parameter. A histogram acquisition module is configured to acquire a ... | 06/07/2011 |
| 7916219 | System and method for dynamic gamma correction in digital video A technique for improving image quality using dynamic gray scale correction, in one example embodiment, includes dynamically computing non-linear gamma curves using histogram data extracted from a current video frame. A gray scale correction is then dynamically appl... | 03/29/2011 |
| 7839455 | Image processing apparatus, image display and image processing method There is provided an image processing apparatus, an image display and an image processing method which are capable of preventing an unnatural change in image quality to image processing. A luminance distribution detecting circuit detects a luminance distribution as ... | 11/23/2010 |
| 7705919 | Video processing device, video display device and video processing method therefor and program thereof In the video processing device, a correction amount update determining unit determines whether to update a correction amount based on an input image obtained from an image input unit and when a cut point is detected or when the number of frames in a number of frames... | 04/27/2010 |
| 7619691 | Picture signal enhancement In a method of picture signal enhancement, a picture signal is subjected (3, 7) to a histogram-based picture signal modification based on a luminance level distribution over a whole picture or a first part of the picture, and the histogram-based picture signa... | 11/17/2009 |
| 7508457 | Video signal processor circuit and television receiver A digital Y signal compatible with a plurality of pixels in one frame unit is divided into a plurality of signal level regions for each constant signal level range by means of a histogram generator circuit, a rate of pixels included in each signal level to all the p... | 03/24/2009 |
| 7468759 | Method, apparatus and recording medium for image processing The sense of contrast perceived by a viewer of an image is quantified and adequate image processing is carried out on image data based on the sense of contrast. Contrast-sense quantification means generates unsharp image data of the image data and then generates a h... | 12/23/2008 |
| 7443453 | Dynamic image saturation enhancement apparatus The invention provides an apparatus for dynamically adjusting the saturation of an image signal consisting of a plurality of pixels. The apparatus includes a first transformation module, an operation module, a gain module, an adjustment module and a second transform... | 10/28/2008 |
| 7430021 | Video display apparatus having contour correction function A picture quality correction circuit is provided which performs contour correction by grasping features of an input video signal accurately. The correction circuit has a filter circuit for extracting contour components in an inputted video signal, a contour componen... | 09/30/2008 |
| 7382414 | Video signal processing apparatus, for controlling contrast compensation and edge compensation in relation to each other in depedence on luminance of an image, and television receiver including the same A video signal processing apparatus includes a characteristic detection circuit for detecting luminance distribution corresponding to one frame of a video signal, a contrast compensation circuit for compensating contrast of the video signal, an edge compensation cir... | 06/03/2008 |
| 7369183 | Image display apparatus The present invention provides a technique for performing gamma correction processing when there are a plurality of characteristic areas, each of which is characterized by the high frequency in a luminance histogram to improve the impression of contrast. According t... | 05/06/2008 |
| 7359573 | Contrast compensation apparatus and method thereof A contrast compensation apparatus and a method thereof utilize a simplified hardware structure and a low contrast distortion. The contrast compensation apparatus includes a pixel value detection unit to detect a distribution of pixel values of respective pixels of a... | 04/15/2008 |
| 7359092 | Picture image input method A picture image input method includes inputting a picture image of an object as a picture image signal. A histogram of a frequency with respect to brightness information of the picture image signal is created. A first brightness is created, which is a maximum bright... | 04/15/2008 |
| 7358994 | Image processing apparatus, image processing method, recording medium thereof, and program thereof In image processing apparatus and method for displaying and printing a person image photographed by a digital camera, it is possible to automatically correct image data and output the person image of an optimum characteristic. In this apparatus, an image obtaining p... | 04/15/2008 |
| 7352352 | Liquid crystal display device and controlling method thereof The liquid crystal display device includes a histogram analyzer analyzing a histogram of an input image and determining the input image as being in one of a low brightness mode, a normal mode, and a high brightness mode based on the histogram analysis, a back light ... | 04/01/2008 |
| 7345713 | Video display apparatus for correcting luminance difference between display pixels An analog-to-digital converter converts a video signal into a digital video signal consisting of N bits and outputs the converted signal. A correction value memory stores correction data consisting of M bits which is used to correct the difference in luminance betwe... | 03/18/2008 |
| 7321450 | Image processing method, image processing apparatus, and recording medium According to an image processing method for performing color processing in accordance with a plurality of image objects, image data representing the plurality of image objects is input. The relationship between the plurality of image objects is analyzed. The plurali... | 01/22/2008 |
| 7317462 | Method for luminance compensation of liquid crystal display and its device A method for luminance compensation of liquid crystal display includes: measuring the original gamma curve of the panel, setting a target gamma curve, inputting an initial gray level to obtain a luminance corresponding to the target gamma curve, finding the adjusted... | 01/08/2008 |
| 7312832 | Sub-picture image decoder A sub-picture image decoder is disclosed, which essentially uses a sub-picture buffering unit to temporarily store at least one sub-picture data, an adjustment unit to store plural types of adjusting parameters, a control unit to compare the sub-picture data with th... | 12/25/2007 |
| 7289100 | Method and apparatus for driving liquid crystal display A method of driving a liquid crystal display includes arranging an externally provided first data into a histogram for each frame, producing a second data having an expanded contrast using the histogram, determining a control value by extracting a peak value at a po... | 10/30/2007 |
| 7245764 | Image processing method and image processing apparatus utilizing luminance histograms, and projector The invention provides an image processing method, an image processing apparatus, and a projector which determine a scene-change so as to perform an optimal tone conversion, luminance correction, or the like, for each scene of a moving image. An image processing app... | 07/17/2007 |
| 7227559 | Image displaying method, image displaying device, and contrast-adjusting circuit for use therewith A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness ... | 06/05/2007 |
| 7221807 | Methods and systems for digital image characteristic adjustment using a neural network Embodiments of the present invention comprise methods and systems for automatically adjusting images to conform to preference data. ... | 05/22/2007 |
| 7219034 | System and methods for display of time-series data distribution A system and methods for displaying data distribution information for time-series data is described. The methods include computing a condensed quantile function that may be used to generate approximate histograms for the time-series data, while decreasing the data s... | 05/15/2007 |
| 7199840 | Dynamic gray scale range adjustment apparatus and method In gray-scale correction where extension to a dynamic range is performed based on a maximum value and a minimum value of a video luminance signal, sufficient correction effects cannot be obtained in some displayed images. Therefore, a histogram detecting circuit ( | 04/03/2007 |
| 7200265 | Image processing apparatus, image processing method, image processing program, and medium recording the image processing program Proper lightness correction is unavailable if a determination is unsuccessfully made whether or not an image to be retouched is a backlight image. A distribution ratio of luminance components is obtained from an image whose type is to be determined. The similarity i... | 04/03/2007 |
| 7176965 | Method of adjusting the brightness of an image, digital camera and image processor using the method The brightness of image data is previously defined based on the R, G, and B values of each pixel. In an image considered to have been exposed appropriately by a conventional method, when the brightness histogram for the defined image is computed, pixels having the m... | 02/13/2007 |
| 7167214 | Signal processing unit and liquid crystal display device A signal processing unit in a liquid crystal display device, etc., includes a brightness component appearance frequency measuring unit that measures an appearance frequency of each brightness component in a video signal; a parameter outputting unit that outputs a di... | 01/23/2007 |
| 7110046 | Method for dynamically adjusting video brightness A method for dynamically adjusting video brightness performs histogram equalization on a video YUV brightness/color signal to generate an equalization brightness curve. The brightness of each pixel is compared with every pixel of the video frame before and after his... | 09/19/2006 |
| 7110599 | Image data retouching apparatus, image data retouching method, and medium on which image data retouching program is recorded In the present invention, image data from an image input device, including differences of tone levels of picture elements constituting these image data from surrounding picture elements, are figured out and the distribution of these differences of tone levels is pre... | 09/19/2006 |
| 7102697 | Contrast enhancement of digital images An adaptive histogram equalization method is introduced which allows the histogram equalization amount to automatically adapt to the original image contrasts, which can be measured from the originals. Contrast over-enhancement is avoided by limiting the spatial freq... | 09/05/2006 |
| 7088856 | Method for quantization of histogram bin value of image A method for quantization of a color histogram bin value of an image or video, and more particularly, a method for non-uniform quantization of a color histogram bin value of an image (or video) according to the frequency of color occurrence is provided. The methods ... | 08/08/2006 |
| 7081906 | Driving method and device for flat panel display The present invention relates to a driving device for a flat panel display and driving method of, capable of enhancing an image quality. In the present invention, a gray level of an original image is rearranged using the minimal distribution lower and upper gray lev... | 07/25/2006 |
| 7068328 | Method, apparatus and recording medium for image processing The sense of contrast perceived by a viewer of an image is quantified and adequate image processing is carried out on image data based on the sense of contrast. Contrast-sense quantification means generates unsharp image data of the image data and then generates a h... | 06/27/2006 |
