| Patent application number | Description | Published |
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| 20100189180 | QUANTIZATION FOR HYBRID VIDEO CODING - Method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal; performing quantization on samples of the prediction error signal or on coefficients resulting from a transformation of the prediction error signal into the frequency domain to obtain quantized values, representing quantized samples or quantized coefficients respectively; calculating a quantization efficiency for the quantized values; calculating a zero efficiency for a quantization, when the quantized values are set to zero; selecting the higher efficiency; and maintaining the quantized values or setting quantized values to zero, for further proceeding, depending on the selected efficiency. | 07-29-2010 |
| 20100208989 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, PROGRAM AND INTEGRATED CIRCUIT - An image coding method includes transforming a color space of a color image from a first color space to a second color space to generate a color space transformed color image (S | 08-19-2010 |
| 20100226432 | INTERPOLATION FILTERING METHOD, IMAGE CODING METHOD, IMAGE DECODING METHOD, INTERPOLATION FILTERING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - An interpolation filtering method includes selecting (S | 09-09-2010 |
| 20100254450 | VIDEO CODING METHOD, VIDEO DECODING METHOD, VIDEO CODING APPARATUS, VIDEO DECODING APPARATUS, AND CORRESPONDING PROGRAM AND INTEGRATED CIRCUIT - A video coding method according to the present invention is for coding a signal to be coded which represents a video, and includes: generating a prediction signal predictive of the signal to be coded, based on a coded signal coded prior to the coding of the signal to be coded (S | 10-07-2010 |
| 20100254463 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, SYSTEM, PROGRAM, AND INTEGRATED CIRCUIT - An image coding method includes: quantizing a signal to be coded to determine a quantized coefficient (S | 10-07-2010 |
| 20110038410 | ADAPTIVE CODING OF A PREDICTION ERROR IN HYBRID VIDEO CODING - The present invention relates to a method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal, deciding whether to transform the prediction error signal into the frequency domain, or to maintain the prediction error signal in the spatial domain for encoding. | 02-17-2011 |
| 20110206135 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, INTEGRATED CIRCUIT AND PROGRAM - Images are coded with higher efficiency while maintaining the same image quality. An image coding method of coding an image on a block basis, including: transforming (S | 08-25-2011 |
| 20110228843 | VIDEO DECODING METHOD, VIDEO ENCODING METHOD, VIDEO DECODER, VIDEO ENCODER, PROGRAM, AND INTEGRATED CIRCUIT - A video decoding method includes: a step of obtaining (a) the encoded signal and (b) filter information for specifying filtering; a step (S | 09-22-2011 |
| 20110249755 | MOVING IMAGE CODING METHOD, MOVING IMAGE DECODING METHOD, MOVING IMAGE CODING APPARATUS, MOVING IMAGE DECODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT - The coding method includes: transforming pixel values of an image into a two-dimensional matrix including N coefficients in a frequency domain; quantizing the N coefficients to generate N quantized coefficients; generating a one-dimensional sequence based on the two-dimensional matrix and tree structure information that defines a binary tree; and coding the one-dimensional sequence and at least some of the N quantized coefficients. The generating includes: determining, based on the two-dimensional matrix, a reference destination information item indicating positions of the N quantized coefficients in the two-dimensional matrix to be referenced to by the N leaf nodes, respectively (S | 10-13-2011 |
| 20120027083 | VIDEO CODING METHOD, VIDEO DECODING METHOD, VIDEO CODING APPARATUS, AND VIDEO DECODING APPARATUS - A video coding method which enables reduction in the decrease in the efficiency of coding a video and enhancement of the image quality of the resulting decoded video involves: predicting a video signal to generate a prediction signal (S | 02-02-2012 |
| 20120045145 | CODING ARTIFACTS REMOVING METHOD, CODING METHOD, DECODING METHOD, CODING ARTIFACTS REMOVING APPARATUS, CODING APPARATUS, AND DECODING APPARATUS - A method of removing coding artifacts in first and second processed edges that are processed edges in an image signal and in different directions includes: determining, based on at least pixel values of first adjacent pixels adjacent to the first processed edge, a first target pixel from which coding artifacts are to be removed for the first processed edge (S | 02-23-2012 |
| 20120082242 | IMAGE CODING METHOD, IMAGE DECODING METHOD, AND APPARATUSES THEREFOR - The image coding method for improving the filtering quality and suppressing increase in the transmission bandwidth includes: selecting filter data elements of the first and second component filters from a filter memory ( | 04-05-2012 |
| 20120127003 | CODING METHOD, DECODING METHOD, CODING APPARATUS, AND DECODING APPARATUS - A coding method according to the present invention comprises: transforming an input signal; quantizing a transformed output signal; and entropy coding quantized coefficients, wherein the transforming includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient; generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal which is a part of the first transformed output signal, and outputting the transformed output signal including the generated second transformed output signal and a second partial signal which is the remaining part of the first transformed output signal other than the first partial signal; and modifying the first transformed output signal. | 05-24-2012 |
| 20120128065 | CODING METHOD, DECODING METHOD, CODING APPARATUS, AND DECODING APPARATUS - A coding method according to an implementation of the present invention includes: transforming an input signal using a first transform coefficient (S | 05-24-2012 |
| 20120128066 | ENCODING METHOD, DECODING METHOD, ENCODING DEVICE AND DECODING DEVICE - A coding method comprises: transforming an input signal; quantizing a transformed output signal; and entropy coding quantized coefficients, wherein the transforming includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient; and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal which is a part of the first transformed output signal, and outputting the transformed output signal including the generated second transformed output signal and a second partial signal which is the remaining part of the first transformed output signal other than the first partial signal, and wherein, in the generating and outputting, at least one of (i) the first partial signal that is a target signal range for the second transform and (ii) the second transform coefficient is adaptively determined temporally or spatially. | 05-24-2012 |
| 20120134408 | CODING METHOD, DECODING METHOD, CODING APPARATUS, AND DECODING APPARATUS - A coding method comprises: transforming an input signal; scanning and quantizing coefficient values composing the transformed output signal; and entropy coding the quantized coefficients, wherein the transforming includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient; and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal which is a part of the first transformed output signal, and outputting the transformed output signal including the generated second transformed output signal and a second partial signal that is the remaining part of the first transformed output signal other than the first partial signal, and a signal corresponding to the second transformed output signal and a signal corresponding to the second partial signal are processed differently in at least one of the scanning, the quantizing, and the entropy coding. | 05-31-2012 |
| 20120134412 | ENCODING METHOD, DECODING METHOD, ENCODING DEVICE AND DECODING DEVICE - A coding method according to the present invention comprises: transforming an input signal to generate a transformed output signal; quantizing the transformed output signal to generate quantized coefficients; and entropy coding the quantized coefficients to generate a coded signal, wherein the transforming includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient; and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal which is a part of the first transformed output signal, and outputting the transformed output signal including (i) the generated second transformed output signal and (ii) a second partial signal which is the remaining part of the first transformed output signal other than the first partial signal. | 05-31-2012 |
| Patent application number | Description | Published |
|---|
| 20120140821 | PIXEL ADAPTIVE INTRA SMOOTHING - The present invention relates to spatial prediction of pixels of a block, the block being a block of a digital image. In particular, for a block pixel at least one reference pixel(s) is selected and out of the selected reference pixel(s), the block pixel is predicted. In particular, the prediction of the block pixel is performed depending on the distance of this pixel to the reference pixel(s) from which it is to be predicted. | 06-07-2012 |
| 20120177111 | EFFICIENT CLIPPING - A method for clipping pixel values of image and video data, and a method and an apparatus for encoding and decoding video data is provided. During the encoding and decoding process of video data, pixels are identified that are outside a certain range of allowable values. These out-of-scope pixels are corrected by replacing their original value with a replacement value within said range, i.e., by either the minimum or the maximum value of said range. In addition, pixels in the neighborhood of the out-of-scope pixels are corrected as well, even if their value is within the allowable range, in order to account for inter-pixel correlations. The correction of neighboring pixels may be performed by adding a correction value that is computed on the basis of the difference between the original value and the replacement value of the out-of-scope pixel. | 07-12-2012 |
| 20120230423 | LINE MEMORY REDUCTION FOR VIDEO CODING AND DECODING - The present invention relates to filtering of image data at first with a deblocking and then with an adaptive loop filter, suitable for the purpose of video coding and decoding. In order to reduce requirements to a memory on chip, used to buffer image lines necessary for filtering, the input signal for the adaptive loop filter is determined from among deblocked pixels, non-deblocked pixels and partially (horizontally only or vertically only) deblocked pixels. The adaptive loop filtering of a deblocked pixel may then apply the filter taps to already deblocked pixels and/or undeblocked pixels and/or partially deblocked pixels in accordance with the determination of the input signal. An advantage of the invention is reduction of the line memory necessary especially at the decoder for processing with both filters. | 09-13-2012 |
| 20120257702 | ORDER OF DEBLOCKING - The present invention relates to block-based video coding, in particular to methods for removing blocking artifacts in reconstructed video images. In conventional block-based video coding, both decoding and deblocking are performed on a block-by-block basis, which results in a plurality of dependencies between the various steps and processes. According to the present invention, deblocking is performed in batch mode after an entire frame has been decoded. Moreover, vertical and horizontal deblocking are separated in the sense that deblocking in the one direction is only performed after deblocking in the other direction is completed for the entire frame. In this manner, the decoding and deblocking processing can be split into a plurality of concurrent processes, which results in a highly efficient implementation both in hardware and in software. | 10-11-2012 |
