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6873735 |
System for improved efficiency in motion compensated video processing and method thereof
A system and methods are shown for improved processing of motion compensated video. A software driver handles image data related to motion compensated video. The image data includes IDCT...
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6870963 |
Configurable pattern optimizer
An apparatus and method of serializing frequency based image data in a digital cinema system is described. At least one group of data that may be represented as a 16×16 block of data is compiled....
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6870960 |
Image encoder and method of encoding images according to weight of portions of image
An image encoder divides an input image frame into a plurality of blocks, detects a motion vector of each block, arranges the blocks into one or more groups based on the motion vector, and...
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6868188 |
Efficient down-scaling of DCT compressed images
In a method and a device for calculation of the Discrete Cosine Transform (DCT) only the DCT coefficients representing the first half and the second half of an original sequence are required for...
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6859558 |
Method for eliminating blocking effect in compressed video signal
The present invention relates to a method for eliminating a blocking effect in a compressed video signal signal. The method of the invention includes: the encoding step of eliminating a blocking...
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6850650 |
System and method for recompressing a jpeg image using requantization
A system and method for recompressing a JPEG image using requantization is described. DCT transform coefficients for a compressed JPEG image are statistically analyzed to generate a stored numeric...
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6850571 |
Systems and methods for MPEG subsample decoding
Decimating 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 must be...
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6847735 |
Image processing system, image processing apparatus, image input apparatus, image output apparatus and method, and storage medium
This invention has as its object to attain efficient encoding/decoding even when the processing time, memory, arithmetic cost, and the like of an apparatus are limited. Encoded image data is input...
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6842540 |
Surveillance system
A surveillance image is acquired from a surveillance camera. Supplement information (such as date and time, and surveillance camera number) relating to the surveillance image is acquired. By...
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6829385 |
Apparatus and method for processing images, and a computer-readable medium
An image processing apparatus which performs color transformation and compression/decompression simultaneously on image data so that the number of blocks to be transformed with the color...
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6826228 |
Conditional masking for video encoder
This method and apparatus described herein imposes masking factors to the determined quantization step sizes of macroblocks of a video sequence such that encoding efficiency is increased. A...
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6826289 |
System for changing attribute of image by electronic watermark
In the attribute detection apparatus in the system of the present invention, an inputted image is transformed by DCT means to extract an estimation value of the embedded electronic watermark data...
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6826308 |
Method and apparatus for image encoding and decoding using a shape and position map
A method and apparatus for decoding an image data comprising decoding a coded map signal indicative of a position and shape of a content in a screen inputted for every block of picture signals,...
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6823074 |
Digital-watermark superposing apparatus and digital-watermarker detecting apparatus
In a digital-watermark superposing apparatus and a digital-watermark detecting apparatus, a plurality of DCT coefficients for respective frequency components are generated by subjecting video data...
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6807311 |
Method and apparatus for compressing and storing image data
A method and apparatus for compressing image data for storage in a memory device is presented. This is accomplished by separating the image data into a plurality of pixel sets where each pixel set...
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6807312 |
Robust codebooks for vector quantization
A method for data compression. An encoder receives data vectors from an original data set. The encoder uses a vector quantization codebook to encode the data vectors into encoded vectors. The...
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6804402 |
Method and apparatus for hierarchically encoding and decoding an image
The method of encoding divides the image into a number of blocks, which are then transformed ( 200 ), in accordance with a linear transform, into blocks of transform coefficients. The transform...
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6792149 |
Method and apparatus for resizing an image frame including field-mode encoding
A method and apparatus for reducing information artifacts imparted to a decoded video information stream by an MPEG-like decoder utilizing discrete transform (DCT) domain compression to produce a...
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6778707 |
Method for decompressing JPEG files using a variable block size inverse discrete cosine transform
A method for decompressing digital image data to improve the speed of decompression is disclosed. More specifically, the present invention improves image decompression time by operating upon a...
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6779040 |
Method and system for serving data files compressed in accordance with tunable parameters
A method and system for transferring data files from a sever entity, such as a server computer, to a client entity, such as a client process running on a remote client computer. The data files are...
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6775416 |
System and method for inserting information in DCT coefficient domain
A system for inserting an increased amount of information into DCT coefficients generated in blocks from image data is disclosed. Additional information is first inserted into input DCT...
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6771393 |
Transmission rate control for continuous-tone facsimile
A continuous-tone facsimile mechanism supports a transmission rate control mode to control the transmission rate of a continuous-tone image (e.g., a color image) based on the data rate between the...
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6757439 |
JPEG packed block structure
JPEG (Joint Photographic Experts Group) images are encoded and decoded as fast as possible for a variety of disparate applications. A novel structure stores the 8×8 Discrete Cosine Transform (DCT)...
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6748018 |
Picture decoding method and apparatus
An MPEG downdecoder is to be provided which eliminates dephasing of pixels of moving picture data without losing properties inherent in a picture obtained on interlaced scanning. If an interlaced...
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6748533 |
Method and apparatus for protecting the legitimacy of an article
A method, an apparatus and a computer program product are disclosed for protecting the legitimacy of an article ( 100 ), and in particular an electronic document, against forgery or fraud. Such...
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6748118 |
Method of quantizing signal samples of an image during same
Briefly, in accordance with one embodiment of the invention, a method of quantizing signal samples of an image during image compression includes the following. A process to transform the signal...
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6744928 |
Variable-length decoding method and apparatus employing code length and a recording medium
The present invention includes methods and apparatus for attaining high speed coding and decoding. A first method decreases the number of memory access times by performing signal format conversion,...
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6741752 |
Method of removing block boundary noise components in block-coded images
An improved block noise elimination method is provided, which uses one-dimensional pixel vectors made of pixel rows or columns across two neighboring blocks to analyze blocky noise residing across...
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6735325 |
Identification data insertion and detection system for digital data
The invention provides an identification data insertion and detection system for digital data which improves the detection ratio when an image is converted into frequency components and electronic...
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6728414 |
De-blocking method and apparatus
A de-blocking method and apparatus in which a block classifier determines whether the received decoded image is a planar surface or a complex surface. A first correction value calculator calculates...
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6721437 |
Data processing apparatus, coding apparatus, data processing method and coding method
The invention provides a data processing apparatus and method which processes data in which additional data is embedded and inhibits illegal accessing from the outside to prevent alteration of...
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6721359 |
Method and apparatus for motion compensated video coding
Apparatus and methods are provided for encoding video data in a manner which significantly reduces the computation performed by the video encoder and the video decoder without suffering any...
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6718066 |
Method and apparatus for coding an image object of arbitrary shape
It is known to represent a square block of an image which has a maximum horizontal or vertical extension N as N vectors each representing one column or row, and encode it using an N×N discrete...
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6718064 |
Image compression and expansion apparatus
An image compression and expansion apparatus obtains an average value of a single block (8×8 pixels) in a first matrix (64×64 pixels) of the original image data, to generate reduced image data of...
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6714686 |
Image processing device
An image processing device includes an encoding control section which outputs a DCT start signal (DCTSTART), a quantizing start signal (QSTART), and a Huffman encoding start signal (HUFFSTART). It...
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6700991 |
Hidden digital watermarks in images
An image authentication method by embedding digital watermarks into images, comprising: providing an original image and a watermark image; applying pseudo-random permutations to the watermark image...
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6697425 |
Dynamic image encoding apparatus and method for encoding a dynamic image
The present invention discloses a dynamic image encoding apparatus and a method for encoding a dynamic image in which the dynamic image is divided into data blocks, the data blocks are encoded, and...
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6697525 |
System method and apparatus for performing a transform on a digital image
The present invention is embodied in a data compression encoder for use with the discrete cosine transform compression process. The invention enhances compression using the discrete cosine...
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6697788 |
Processing device searching for an optimum value of a cost function by using dynamics
In an optimization problem, an optimum solution is searched by using the deterministic dynamics which has a neighborhood search capability, is not trapped into a local minimum state during a search...
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6697430 |
MPEG encoder
A coding information memory is provided for storing coding modes that have been applied to respective compressed blocks. When a current block to be coded is input, coding distortion is estimated...
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6694059 |
Robustness enhancement and evaluation of image information extraction
A method for recognition of features appearing in an input image includes upsampling the input image to generate an enlarged image including an increased number of pixels relative to the input...
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6694342 |
Scaled forward and inverse discrete cosine transform and video compression/decompression systems employing the same
A system and method of a forward and/or inverse discrete cosine transform in a video system. In one embodiment, an array of DCT transform coefficients are converted to a two dimensional array of...
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6687411 |
Image coding/decoding method and recording medium having program for this method recorded thereon
The invention relates to an image coding/decoding method and to a recording medium on which a program for this method has been recorded, and the object thereof is to raise the compression rate of...
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6687412 |
Method and system for generating image compression quantization matrices
A system ( 100 ) for generating image compression matrices is disclosed. The present invention includes an image ( 102 ) having pixel block arrays ( 104 ). The present invention also includes a...
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6681052 |
Methods and systems for performing inverse quantization and inverse weighting of DV video
In methods and systems consistent with the present invention, the process of inverse quantization is performed by determining class number and quantization number for each block of received...
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6678423 |
Shift and/or merge of transformed data along two axes
A one-dimensional algorithm for perform the merging of complementary portions from two independent overlapped images on the same 8×8 grid without the computational expense of conversion to and...
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6674910 |
Apparatus and method for image-compression encoding and decoding using adaptive transform
An apparatus and method for image-compression encoding and decoding using an adaptive transform in which, where different transform coefficients are outputted in accordance with a change of the...
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6671414 |
Shift and/or merge of transformed data along one axis
A method of transform domain processing of transformed data is applied to image processing in various applications. A one-dimensional algorithm allows for the selection of an arbitrary contiguous...
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6668095 |
Systems and methods for compressing and decompressing images
This invention relates to systems and methods for increasing image compression. The systems and methods are improvements applicable to encoder/decoders which compress images by, inter alia,...
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6668068 |
Image attribute altering device and electronic watermark embedding device
Image attribute detection means for detecting the attribute of an input image (attribute “A”) and image attribute altering means for altering the image attribute in the input image on the basis...
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