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| Number | Title | Issue Date |
| RE44235 | Enhancing image quality in an image system A technique for improving image compression by pre-processing the image frames. In particular, methods for de-interlacing and noise reduction using combinations of median filters, applied both spatially and temporally, with and without motion analysis, are described... | 05/21/2013 |
| 8446964 | Method and system for noise reduction with a motion compensated temporal filter Described herein is a method and system for the reduction of noise in a video sequence. When motion is present in the video sequence, this system and method identifies motion data. With the motion data, a Motion Compensated Temporal Filter (MCTF) can apply motion co... | 05/21/2013 |
| 8446965 | Compression noise reduction apparatus, compression noise reduction method, and storage medium therefor A compression noise reduction apparatus includes a peripheral pixel state determination module, a filter strength determination module, and a deringing processing module. The peripheral pixel state determination module determines a state of a flat area and an edge a... | 05/21/2013 |
| 8446966 | Block noise reducing apparatus A calculation is made as to first and second differences in level represented by an input video signal at first and second inter-block boundaries adjoining opposite edges of every rectangular block respectively. A corrective value at every pixel in the rectangular b... | 05/21/2013 |
| 8437410 | System and method to execute a clipping instruction Devices, systems, methods, and other embodiments associated with clipping instructions are described. In one embodiment, a method includes receiving a clipping instruction for clipping filtered values in a video image de-blocking operation. The clipping instruction ... | 05/07/2013 |
| 8422566 | Selective filtering based on the motion compensation error of two adjacent transform blocks A semiconductor for decoding coded image and audio data, which includes an audio processor that decodes coded audio data, and an image decoder that decodes image data. The image decoder removes coding distortion in pixels of two adjacent transform blocks which are m... | 04/16/2013 |
| 8422565 | Information processing device and method, and information processing system An information processing device includes: an accumulating unit for accumulating encoded data obtained by encoding image data; a reading unit for reading out the encoded data in data increments; a determining unit for determining whether or not a parameter indicatin... | 04/16/2013 |
| 8416861 | Fixed-point implementation of an adaptive image filter with high coding efficiency In accordance with an embodiment of the present invention, a method comprising: representing coefficients of an adaptive image filter in binary words wherein the coefficients are restricted and the binary words have a maximum number of bits defined at least in part ... | 04/09/2013 |
| 8416860 | Deblocking filter, image encoder, and image decoder A deblocking filter, an image encoder, and an image decoder perform edge-filtering of moving-image data which can be divided into blocks, on groups of a predetermined number of pixels arrayed across edges between the blocks, and include: a processing unit concurrent... | 04/09/2013 |
| 8401091 | Inter-layer prediction method for video signal In one embodiment, a method for encoding or decoding a video signal includes constructing a base layer picture in a base layer, where the base layer picture includes image sample data. The method further includes applying a de-blocking filter to the image sample dat... | 03/19/2013 |
| 8385432 | Method and apparatus for encoding video data, and method and apparatus for decoding video data Scalable video coding based on H.264/AVC uses motion compensation, which results in motion vectors and residual pictures. To optimize the encoding of the residual pictures of the enhancement-layer, they can be predicted from the base-layer. This requires complex enc... | 02/26/2013 |
| 8369419 | Systems and methods of video compression deblocking An exemplary video decoder comprises: an entropy decoder; a spatial decoder; combining logic; and an inloop deblocking filter. The entropy decoder receives an incoming coded bit stream. The spatial decoder receives the output of the entropy encoder and produces an e... | 02/05/2013 |
| 8369423 | Method and device for coding The invention relates to a method for coding a sequence of images, comprising the following steps: determining, for the image data, the prediction image data from reference image data, calculating residual data fro... | 02/05/2013 |
| 8369422 | Methods and apparatus for artifact removal for bit depth scalability Apparatus and methods are described for encoding and decoding image data for image blocks which form a picture by having a deblocking filter remove coding artifacts caused by local inverse tone mapping for intra-layer texture prediction for bit depth-scalability. A ... | 02/05/2013 |
| 8369421 | Coding distortion removal method by selectively filtering based on a pixel difference Mosaic-shaped block noise occurs when a compressed video signal is reproduced. This block noise is removed, but removing block noise from every block using a deblocking filter imposes a significant load on the deblocking filter. This load is therefore reduced by det... | 02/05/2013 |
| 8369420 | Multimode filter for de-blocking and de-ringing A multimode filter that is versatile for digital signal processing including in-loop processing (de-blocking and de-ringing), post processing (de-blocking and de-ringing), and overlap smoothing. A flexi-standard filter includes the multimode filter. An electronic de... | 02/05/2013 |
| 8363734 | Multi-directional comb filtering in a digital video decoder A multi-directional comb filtering in a digital video decoder is provided. ... | 01/29/2013 |
| 8355452 | Selective frame dropping for initial buffer delay reduction The embodiments of the present invention provide for methods, devices, and systems adapted to reduce initial buffering delay encountered at the client side by selectively dropping content elements of a source content within a drop interval prior to transmission to a... | 01/15/2013 |
| 8345777 | Deblocking filtering apparatus and method Provided is an image deblocking filtering method and apparatus. The method includes: determining whether at least one of two adjacent blocks is encoded using illumination compensation, adjusting a filtering intensity of a deblocking filter based on the determination... | 01/01/2013 |
| 8311130 | Block distortion detection method, block distortion detection apparatus, block distortion removal method, and block distortion removal apparatus A video decoder is connected with a block distortion detector for specifying the boundary of blocks where block boundary occurs, using decoded image data and information of motion vectors, which are supplied from the video decoder; and a block distortion remover for... | 11/13/2012 |
| 8311129 | Temporal video filtering In various embodiments, temporal filtering may be used to reduce noise over time in a series of video frames. A temporal filter may use previous filtered frames to reduce the noise in a current frame. For example, a temporal filter may filter noise in still parts of... | 11/13/2012 |
| 8295366 | Signal adaptive filtering method, signal adaptive filter and computer readable medium for storing program method A signal adaptive filtering method for reducing blocking effect and ringing noise, a signal adaptive filter, and a computer readable medium. The signal adaptive filtering method capable of reducing blocking effect and ringing noise of image data when a frame is comp... | 10/23/2012 |
| 8295367 | Method and apparatus for video signal processing Systems and methods of processing a video signal are provided. A potential block boundary can be detected between a first block and a second block of a frame of the video signal, wherein the frame, the first block, and the second block each include a plurality of pi... | 10/23/2012 |
| 8284847 | Detecting motion for a multifunction sensor device To detect movement of a depth camera in a motion capture system, readings from an accelerometer in the depth camera are processed to provide short and long term moving averages for each of the x, y and z axes. For each axis, a difference between the short and long t... | 10/09/2012 |
| 8259818 | Deblocking apparatus and associated method A deblocking apparatus is provided. The deblocking apparatus includes a filter, a blocking detection module and a blending unit. The filter receives a target pixel of a pixel matrix to generate a filtered target pixel. The blocking detection module generates a deblo... | 09/04/2012 |
| 8259819 | Method and apparatus for improving video quality by utilizing a unified loop filter The present invention relates to method and apparatus for improving video quality. The present invention provides a unified loop filter including: a pixel determining unit which determines the type of a pixel based on boundary strength; a similarity transforming uni... | 09/04/2012 |
| 8249174 | Apparatus for filtering a pixel using horizontal and vertical filtering coefficients In one embodiment, four horizontal successive pixels are first filtered by a decoder in a digital video appliance based on a determined horizontal filtering coefficient. Two pixels of the four horizontal successive pixels are in a first block and two pixels of the f... | 08/21/2012 |
| 8249173 | Apparatus for performing loop-filtering on four successive pixels of an image In one embodiment, the apparatus includes a decoder configured to obtain quantization information of a first block, obtain a block type of the first block, and compare the quantization information and a threshold value. Loop-filtering is performed by the decoder on ... | 08/21/2012 |
| 8249172 | Method of filtering a pixel of an image using a weighted filtering coefficient In one embodiment, the method includes obtaining a pixel value difference between two successive pixels. The two successive pixels are on a block boundary. The method further includes calculating the filtering coefficient based on the pixel value difference, weighti... | 08/21/2012 |
| 8243831 | Image deblocking filter and image processing device utilizing the same An image deblocking filter comprises an instruction memory. A decision unit executes instructions stored in the instruction memory to decide a first path or a second path of instruction fetching from the instruction memory to an execution unit. The execution unit is... | 08/14/2012 |
| 8243829 | Method of filtering a pixel using a filtering coefficient In one embodiment, the method includes obtaining a pixel value difference between two successive pixels. The two successive pixels are on a block boundary. The method further includes calculating the filtering coefficient based on the pixel value difference, and obt... | 08/14/2012 |
| 8243830 | Apparatus for removing blocking artifact by filtering pixel in second block using filter coefficient obtained using quantization information for first block In one embodiment, the apparatus includes a decoder configured to obtain quantization information of a first block, and determine a filtering coefficient based on values obtained by using the quantization information. A filtered pixel value included in a second bloc... | 08/14/2012 |
| 8243828 | Method of performing loop-filtering on a pixel of an image In one embodiment, the method includes obtaining quantization information of a first block including the pixel to be filtered, and obtaining a block type of the first block and a second block. The second block is adjacent to the first block. The quantization informa... | 08/14/2012 |
| 8243827 | Method of removing a blocking phenomenon using properties of a second block adjacent a first block In one embodiment, the method includes obtaining a block type of the second block, and determining whether the second block has non-zero transform coefficient information if the obtained block type of the second block is not an intra-coded block. The method further ... | 08/14/2012 |
| 8238447 | Method of removing a blocking phenomenon One embodiment of the method includes obtaining a coded block pattern of first and second blocks. The coded block pattern is one of a plurality of coded block patterns, the plurality of coded block patterns includes an intra-coded block, and the second block is adja... | 08/07/2012 |
| 8238449 | Apparatus for removing a blocking phenomenon in a first block using properties of second and third blocks adjacent the first block In one embodiment, the apparatus includes a decoder configured to obtain a block type of the second block and the third block. The second block is adjacent to the first block horizontally, and the third block is adjacent to the first block vertically. The decoder is... | 08/07/2012 |
| 8238448 | Apparatus for performing loop-filtering on sets of four successive pixels of an image In one embodiment, the apparatus includes a decoder configured to obtain quantization information of a first block, obtain a block type of the first block, and compare the quantization information and a threshold value. Loop-filtering is performed by the decoder on ... | 08/07/2012 |
| 8233550 | Method of removing blocking artifact by filtering pixels in a horizontal and then vertical direction In one embodiment, the method includes obtaining quantization information of a first block, and determining a filtering coefficient based on values obtained from a table using the quantization. Four successive filtered pixel values in horizontal direction are obtain... | 07/31/2012 |
| 8229005 | Method of removing blocking artifact by filtering pixel in second block using coefficient obtained using quantization information for first block In one embodiment, the method includes obtaining quantization information of a first block, and determining a filtering coefficient based on values obtained by using the quantization information. A filtered pixel value included in a second block is obtained based on... | 07/24/2012 |
| 8223851 | Method and an apparatus for embedding data in a media stream A method for enhancing a media file. The method comprises encoding a media file for a real time exchange of communications between a plurality of terminals, embedding a non-media communication of the real time exchange into the media file, and forwarding the embedde... | 07/17/2012 |
