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7379609 |
Image processing apparatus and method for conversion between raster and block formats
An image processing apparatus for converting image data between a raster format and a block format including an image data processor for providing the image data including a luminance component and...
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7379500 |
Low-complexity 2-power transform for image/video compression
To encode image and video data using a transform having low computational complexity and high compression efficiency, all elements of the matrix can be expressed with power-of-2 elements, with a...
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7372905 |
Filtering intensity decision method, moving picture encoding method, and moving picture decoding method
A moving picture coding apparatus including an inter-pixel filter having the filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block...
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7372485 |
Digital camera device and methodology for distributed processing and wireless transmission of digital images
A digital imaging system is described that provides techniques for reducing the amount of processing power required by a given digital camera device and for reducing the bandwidth required for...
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7369709 |
Conditional lapped transform
A digital media content (e.g., image, video, audio, etc.) encoder/decoder employs a spatially varying parameter to condition the application of an overlap pre-process and post-process to adjacent...
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7366909 |
Dynamic wavelet feature-based watermark
A dynamic wavelet feature-based watermark for use with digital video. Scene change detection separates digital data into one or more scenes, wherein each of the scenes is comprised of one or more...
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7366238 |
Noise filter for video processing
A noise filter for a video processing system includes a block selector, a cost calculator, a cost table, a cost comparator, and a coefficient filter. The block selector is coupled to receive data...
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RE40079 |
Video encoding and decoding apparatus
An encoding apparatus includes an encoder for encoding an alpha-map signal for discriminating a background from an object of an input picture in motion compensation prediction (MV)+transform...
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7330595 |
System and method for video data compression
A system and method perform video data compression in a manner that limits the need for external memory access. Accordingly, the operational frequency of the local data bus is reduced and power...
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7321693 |
Image processing apparatus and image processing method including adjustment of coded data to specified target size
An image processing apparatus and an image processing method are disclosed for generating coded data having a desired data size at a high speed. The image processing apparatus includes a coding...
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7321686 |
Image processing apparatus and method for improving the contract of an image
Processing for improving the contrast of an image of interest is executed by an image processing circuit in an X-ray photography apparatus. The image is decomposed into coefficient values of a...
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7310366 |
Procedure for estimating amplification factors of a CDMA signal
The invention concerns a procedure for estimating unknown amplification factors of a received CDMA signal, which encompasses a plurality of code channels, in which respectively an input signal from...
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7308028 |
Apparatus and method for generating mosaic images
The present invention relates to an apparatus and method for generating mosaic images, wherein photographed content is displayed as a still image by a digital TV display or video monitor for an...
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7295613 |
Early detection of zeros in the transform domain
A method detects blocks that are to be indicated as skipped at an earlier stage of the encoding process, than would be the case with other implementations of the ITU H.263 and H.264 standards. The...
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7295609 |
Method and apparatus for coding image information, method and apparatus for decoding image information, method and apparatus for coding and decoding image information, and system of coding and transmitting image information
An image information coding apparatus codes an input image signal in a manner optimized on the basis of the visual characteristics. In quantization, an input image signal is divided into blocks, an...
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7277489 |
Two dimensional discrete wavelet transforms
The method performs a two-dimensional discrete wavelet transform on an image. The image comprises a plurality of blocks of pixels. The method generates ( 340 ) a current output block of subband...
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7269564 |
Method and apparatus to indicate an encoding status for digital content
A method of determining an encoding rate for digital content. According to the method, the a sample of the content data is encoded for a predetermined period of time. The encoding rate is...
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7260269 |
Image recovery using thresholding and direct linear solvers
An image recovery algorithm that recovers completely lost blocks in an image/video frame using spatial information surrounding these blocks. One application focuses on lost regions of pixels...
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7254267 |
Encoder for volume data
A volume data encoder with high encoding efficiency is provided. The object of the coding is volume data which contains a plurality of tomogram planes output from a CT and an MRI. A header analysis...
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7242717 |
Wavelet domain motion compensation system
Motion estimation for interframe coding of digital video is performed by matching blocks of transform coefficients representing a frame to be predicted with a phase-allocated array of coefficients...
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7242713 |
2-D transforms for image and video coding
A set of one and two-dimensional transforms is constructed subject to certain range limited constraints to provide a computationally efficient transform implementation, such as for use in image and...
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7236528 |
System and method for processing time-based media
System and method for processing time-based media such as sequences of images, audio sequences, and the like on a computing device such as a personal computer. A method may comprise receiving a...
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7233566 |
Five-by-three wavelet transform apparatus
In a 5×3 wavelet transform apparatus, a function-A module ( 11 ) calculates equations A1 and A2, a function-B module ( 12 ) calculates equations B1 and B2, function-C0 module ( 13 ) calculates an...
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7227898 |
Digital signal conversion method and digital signal conversion device
An inputted digital signal of a first format (DV video signal) is restored to a variable-length code by having its framing cancelled by a de-framing section 11 , then decoded by a variable-length...
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7221709 |
Information processing apparatus and method, and program storage medium
An inputted digital signal of a first format (DV video signal) is restored to a variable-length code by having its framing cancelled by a de-framing section 11 , then decoded by a variable-length...
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7215707 |
Optimal scanning method for transform coefficients in coding/decoding of image and video
An optimal scanning method for coding/decoding an image signal is provided. In a method of coding an image signal through a discrete cosine transform, at least one is selected among a plurality of...
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7187714 |
Image processing apparatus for suppressing high-frequency components of color difference data
An image processing apparatus capable of reducing noise contained in input image data. By determining whether or not, among the absolute values of the AC components of luminance Y, there is at...
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7180947 |
Method and apparatus for a dynamic data correction appliance
Embodiments of the present invention provide a method and system for a dynamic data correction appliance. A plurality of data points in a first domain may be sampled. The sampled data points may be...
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7177356 |
Spatially transcoding a video stream
Systems and methods for transcoding a video stream. An incoming video stream is spatially transcoded to reduce the bit rate of the video stream. The incoming video stream is decoded and the stream...
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7130351 |
Storage reduction during compression
Decompressing compressed video information using relatively less temporary storage is disclosed. A compressed bit stream of video information including a compressed portion is received. A reverse...
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7123656 |
Systems and methods for video compression
The present invention is directed to systems and methods for video compression. In one embodiment, a method of encoding a matrix of transform coefficients is performed. The method includes...
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7103101 |
Method and system for blind Karhunen-Loeve transform coding
A method, system, and computer program product for blind Karhunen-Loeve transform (KLT) coding is disclosed, wherein KLT coefficients and possibly additional information are transmitted without...
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7058230 |
Method and apparatus for encoding image data, and computer-readable recording medium in which program for encoding image data is recorded
An accurate encoding of image data representing a source image, which data is divided into a multiplicity of blocks is performed in accordance with features of the source image by defining a...
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7054366 |
Systems and methods for MPEG subsample decoding
A decoder decimates MPEG or other video data by subsampling the output of an inverse discrete cosine transform (IDCT) module. The decimation process is useful for reducing the volume of data that...
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7035332 |
DCT/IDCT with minimum multiplication
A method, apparatus, computer medium, and other embodiments for discrete cosine transform and inverse discrete cosine transform (DCT/IDCT) of image signals are described. A DCT/IDCT module includes...
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7020204 |
Adaptive method of encoding and decoding a series of pictures by transformation, and devices for implementing this method
A method and a device for coding and decoding a sequence of images or pictures is disclosed. One exemplary embodiment disclosed codes by dividing each picture into blocks of picture elements. Each...
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7016416 |
Low cost video compression using fast, modified Z-coding of wavelet pyramids
Encoding/decoding a stream of bits is disclosed. An encoding unit uses a modified Z-coder to code the zero/non-zero significance function and Huffman coding for the non-zero coefficients...
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7010173 |
Video coder employing pixel transposition
A video encoding method and apparatus is shown wherein image information is represented as a plurality of pixels, the pixels are organized into blocks, pixels transposition is performed on image...
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6985632 |
Image processing system, image processing apparatus, and image processing method
Obtains an image from which noise is removed upon compressing or decoding and displaying an image containing noise. To accomplish this, a subband to which a wavelet transform coefficient of...
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6968012 |
Methods for encoding digital video for decoding on low performance devices
A video encoder encodes the video stream frame by frame. An encoding process generally includes receiving a video frame, subdividing the video frame into uniform pixel blocks, comparing a selected...
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6965647 |
Robust time domain block decoding
A method for robust time domain block decoding is disclosed. In one embodiment, the method includes receiving a block of transform domain coefficients, detecting errors in one or more transform...
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6952451 |
Apparatus and method for decoding moving picture capable of performing simple and easy multiwindow display
Header information capture section extracts information such as the numbers of dots in horizontal and vertical directions, respectively, of the picture, a frame rate and so on from a sequence...
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6950471 |
Coding device, coding method and storage medium
A code length of image coded data is length-fixed in accordance with a code length representing a required criterion. For this purpose, a discrete wavelet transformation unit 110 performs...
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6944225 |
Resolution-scalable video compression
A method of data compression. A multiple-level wavelet transform transforms image data of an original image. Motion compensation is performed on a low-frequency band of the transformed image data....
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6940908 |
Compressing video frames
A method includes generating first difference frames and compressing the first difference frames to form compressed difference frames. The compressed difference frames are decompressed to form...
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6931067 |
Apparatus and method for image coding using tree-structured quantization based on wavelet transform
An apparatus for image coding using tree-structured vector quantization based on a wavelet transform and a method therefor are provided. The apparatus for image coding using a tree-structured...
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6907079 |
Deblocking filter conditioned on pixel brightness
An encoder, decoder, and corresponding method are disclosed for encoding pixel data as a plurality of block transform coefficients and decoding encoded block transform coefficients to provide...
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6907077 |
Variable resolution decoder
A variable resolution decoder of the present invention decodes image data compressed with a compression method such as MPEG-2 supporting interlaced scanning. The decoder performs variable decoding...
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6898245 |
Low complexity video decoding
Method and apparatus for decoding a compressed video signal having a first resolution for use by a display unit having a second resolution. The method and apparatus involve downscaling the...
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6895055 |
Bit-rate guided frequency weighting matrix selection
A system and method for generating a frequency weighted (FW) matrix for use in a Fine-Granularity-Scalability (FGS) video coding system. The system comprises: a system for plotting the average...
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