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6950557 |
Image encoding apparatus and image decoding apparatus
The perceptible resolution and the number of gradations are both guaranteed, and an image is encoded at a high efficiency. An apparatus of the present invention is provided with a blocking circuit...
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6947598 |
Methods and apparatus for generating, including and using information relating to archived audio/video data
Archival storage and retrieval of audio/video information is described. Audio and/or video information is digitized, compressed and stored in an intermediate archive format (IAF), which preserves...
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6944348 |
Apparatus and method for coding/decoding
A coding/decoding technique capable of increasing the error correcting decoding performance and improving the communication quality. This technique divides, through code block segmentation prior to...
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6944357 |
System and process for automatically determining optimal image compression methods for reducing file size
The present invention operates as an expert system to automatically determine an optimal method for reducing the size of an electronic file containing at least one embedded image by determining...
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6944347 |
Image compression and restoring method for binary images
The present invention relates to the image compression and restoring method for binary images that can be used in binary image equipment including printers. In the present invention, an image is...
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6941022 |
Image coding method, image coding and decoding method, image coding apparatus, and image recording and reproduction apparatus
An image coding apparatus is provided with a blocking circuit for dividing an input image signal into two-dimensional blocks each comprising plural pixels; a frequency distribution verifier for...
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6941017 |
Temporal processing for realtime human vision system behavior modeling
Temporal processing for realtime human vision system behavioral modeling is added at the input of a spatial realtime human vision system behavioral modeling algorithm. The temporal processing...
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6941021 |
Video conferencing
A method and apparatus for video conferencing is disclosed. According to one embodiment, a Universal Serial Bus (USB) enabled digital video camera may output an encoded information stream. The...
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6940429 |
Method of context based adaptive binary arithmetic encoding with decoupled range re-normalization and bit insertion
This invention increases the available instruction level parallelism (IPC) of CABAC encoding by decoupling the re-normalization loop and the bit-insertion task required to create the encoded...
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6940900 |
Data compression, control program for controlling the data compression
In a data compression device having a plurality of Huffman coders given identification (ID) values, respectively, to produce Huffman codes together with the corresponding ID codes obtained from the...
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6934418 |
Image data coding apparatus and image data server
An image data coding apparatus having a coding unit that generates coded data after generating a transform coefficient by implementing Wavelet transform on image data, includes: a storage unit that...
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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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6931159 |
Size reduction method and device for compressed images
A method and device for reducing a compressed image to a target size by reducing the quality of the image by a quality scaling factor. Image statistics inherent to the image are used to compute the...
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6928112 |
Signal coding method, signal coding apparatus, signal recording medium, and signal transmission method
The present invention enables to effectively coding a predetermined time length of a video signal with a variable bit rate at real time (one-path) into a total coding bit amount of a constant data...
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6925209 |
Method and apparatus for outputting a codestream as multiple tile-part outputs with packets from tiles being output in each tile-part
A method and apparatus for outputting a codestream as multiple tile-part outputs with packets from tiles being output in each tile-part is described. In one embodiment, the method comprises coding...
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6922490 |
Image compression of selected regions based on transmission bit rate, motion, and/or region information, and bit selection before compression based on transmission bit rate
An image encoding device is provided that can transmit encoded image data without lowering the frame rate even when the transmission speed of the transmission path is lowered. An encoded region...
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6917715 |
Foveal priority in stereoscopic remote viewing system
A client-server arrangement for camera viewing using digital cameras across a computer network. A camera server controls a motorized gimbal to affect camera viewing angle changes according to...
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6912318 |
Method and system for compressing motion image information
A method and system are disclosed for compressing motion image information by means of predictive coding with a high compression ratio while maintaining high image quality. An image in each frame...
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6912317 |
Medical image data compression employing image descriptive information for optimal compression
An image data compression technique is disclosed in which image data compression is based at least partially upon information encoded in a descriptive portion of an image data file. The descriptive...
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6909810 |
Image processing apparatus and method, and its computer program and storage medium
MPEG-4 encoded data is input, and a shape code decoder decodes shape data contained in the encoded image data to obtain ROI information contained in that image. The frequency transforms of the...
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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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6904177 |
Filter processing apparatus
A two-dimensional wavelet transform processing apparatus, more effectively utilizing hardware resource, is realized with reduced hardware construction. For this purpose, the filter processing...
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6895054 |
Dynamic bit rate control process
A process of bit rate control includes asymmetrical reactions to changes in the signal density of the digital video signals. In the process, two different averaging periods are employed to meet a...
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6891889 |
Signal to noise ratio optimization for video compression bit-rate control
A method of determining a quantization parameter for video compression. A block characteristic for blocks in a video frame is quantized and then used to obtain a candidate quantization parameter....
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6885702 |
Method for spatial synchronization of a digitally coded video image and/or for identification of the syntax of a video sequence
The invention concerns a method for synchronising a video image (IM) spatial position to find the position of an initial digital coding grid (GI), by said image (IM) coding blocks, characterised in...
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6885773 |
Method of detecting a fade change in image information based on intra-field dispersion values and intra-field DC levels
There are provided an intra-field dispersion value detecting portion for detecting each of the intra-field dispersion values in each field image; an intra-field average DC level detecting portion...
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6882686 |
System and method for object-oriented video processing
The object-oriented coder discriminates resource allocation between objects and non-objects for video messaging applications over wireless networks. The object-oriented coder executes a rate...
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6879727 |
Decoding bit-plane-encoded data using different image quality for display
An image processing apparatus includes an encoding section and a decoding section. The encoding section includes means for encoding an input image to generate encoded data, means for receiving a...
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6879726 |
Image processing method, apparatus and storage medium
An image processing apparatus includes a wavelet transformation unit for wavelet-transforming input image data on a per-image basis, and an encoder for changing transformation coefficients, which...
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6876771 |
Efficiently adaptive double pyramidal coding
In accordance with an embodiment, a method of encoding includes generating for each transform point a double difference coefficient (comprising the difference between a modeled difference...
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6876770 |
Image encoding device, electronic camera and recording medium for image encoding program
The object of the present invention is to provide an image encoding device for designating a selected region constituting a region to which a greater quantity of information is allocated in an...
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6864997 |
Picture encoding apparatus and method
A picture encoding apparatus and the method in which the quantization step width of the lower hierarchy data having a resolution higher than that of the upper hierarchy data is determined for each...
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6859560 |
Image signal encoding device and images signal encoding method
An image signal encoding device has at least encoding means of dividing a luminescence signal and color-difference signals of image signals into macro blocks having a plurality of sub macro blocks...
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6853466 |
Image processing apparatus and method
An image region is designated based upon object information possessed by image information and the designated image region is subjected to encoding that is different from that of other regions,...
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6853755 |
Method and apparatus for adaptive compression of scanned documents
A method of compressing a document, includes preparing an encoded representation of a document by scanning the document to provide a scanner output; classifying the scanner output as belonging to a...
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6853754 |
System and method for directed acuity segmentation resolution compression and decompression
A compression and decompression system and process for optimally compressing and decompressing multibit per pixel image regions based on the type of data contained in the image region, e.g.,...
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6845179 |
Motion predicted image signal compression
A motion predictive inter frame compression system comprising a wavelet transform unit ( 80 ) for transforming space domain image data to the frequency domain. A motion estimator ( 30 ) operates in...
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6845107 |
Video data multiplexer, video data multiplexing control method, method and apparatus for multiplexing encoded stream, and encoding method and apparatus
The present invention makes it possible to efficiently transmit data for statistical multiplexing which is required for control using statistical multiplexing. By utilizing private packets,...
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6832006 |
System and method for controlling image compression based on image emphasis
A method to automatically vary the compression of images by ranking images within clusters based upon image emphasis. The ranking process computes one or more quantities related to one or more...
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6831947 |
Adaptive quantization based on bit rate prediction and prediction error energy
A method for adaptive quantization of video frames based on bit rate prediction that includes increasing quantization in sectors of a video frame where coding artifacts would be less noticeable to...
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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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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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6823012 |
Method and system for estimating motion vector at high speed for low bit-rate coding
A method and system for estimating a motion vector (MV) at high speed for low bit-rate coding is provided. The method and system for estimating a motion vector includes (a) forming sum pyramids for...
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6816617 |
Motion vector searcher and motion vector search method as well as moving picture coding apparatus
The invention provides a motion vector searcher which includes an inter-block difference arithmetic operation section for calculating and outputting difference amounts between an original image MB...
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6816618 |
Adaptive variable length image coding apparatus
In a system for variable-length coding, when image data of a plurality of documents are compressed and stored in a compression memory, the image data is divided into a plurality of areas. Then,...
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6812865 |
Data compression
A data compression apparatus includes a source detection arrangement for detecting whether or not the input data is source data that has not undergone a previous compression/decompression cycle; a...
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6804403 |
Region-based scalable image coding
A region-based system, method and architecture for encoding and decoding digital still images to produce a scalable, content-based, randomly accessible compressed bit stream is disclosed. According...
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6804294 |
Method and apparatus for video frame selection for improved coding quality at low bit-rates
A method and apparatus for advantageously selecting video frames to be coded in order to improve the coding quality of a low bit-rate coder. In particular, temporal sub-sampling (i.e., selecting a...
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6804401 |
Method for compressing digital documents with control of image quality subject to multiple compression rate constraints
A method for digital image compression of a raster image is disclosed which uses different compression methods for selected parts of the image and which dynamically adjusts compression and...
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6798917 |
Image input apparatus, image processing apparatus, image input method, image processing method and image input system
The invention provides an encoding method applicable to the sub band encoding of an image of any resolution or size. For example, by designating the resolution or size of an input digital image and...
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