Abstract: An encoded code stream is searched for a frame generally coincident with a specific frame without having to decoding the frame to its original image. The present invention provides an image search device that searches an object encoded code stream formed by compression coding of a plurality of frames for a frame generally coincident with a specific one, which includes a decoder for making entropy decoding of the object encoded code stream to generate quantization coefficients of each frame, a matching unit for making matching between the quantization coefficients of the specific frame and those of each frame which are generated by the decoder and correspond in sample position to those of the specific frame, and a judging unit for judging, based on the result of matching, whether the frame is generally coincident with the specific one.

Abstract: The present invention is applied to for example video cameras recording an image pickup result by moving picture, electronic still cameras, monitoring devices and the like. Image pickup means 3 and image compressing means 6 are connected to each other by a wiring layer formed on a surface on an opposite side from an image pickup surface of the image pickup means 3, and are thereby integrated with each other. A data compression ratio used for data compression of at least a next block is changed on the basis of an amount of code generated by data compression of an image pickup result S1 in a block unit. Also, the image pickup result S1 of each photoelectric conversion unit is output from the image pickup means 3 in such a manner as to correspond to the processing in the block unit.

Abstract: A coding apparatus includes: a wavelet transform section which transforms image data into coefficient data for every sub-band; a code blocking section which divides a region of the sub-band of the coefficient data generated by the wavelet transform section into code blocks; a state transition section which transits a state of the coefficient data which is a process target according to the value and state of surrounding binary coefficient data adjacent to the coefficient data which is the process target; a selection section which selects a coding pass according to the state of the coefficient data transited by the state transition section; and a coding section which codes the coefficient data for every code block generated by the code blocking section according to the coding pass selected by the selection section.

Abstract: A coding apparatus includes: a bit modeling section which performs bit modeling for coding for coefficient data of every sub-band obtained by wavelet-transforming image data; an expanding section which expands a plurality of data sets including a symbol, a context and control information obtained by the bit modeling section in a register as input data; a storing section which stores the input data expanded by the expanding section as buffer data; a integrating section which integrates the data set in which the control information is valid in the input data expanded by the expanding section and the data set in which the control information is valid in the buffer data stored in the storing section; and a coding section which codes the data sets in which the control information is valid, which are integrated by the integrating section.

Abstract: Apparatus and method for image coding may group code units corresponding to an image based on a same at least one parameter of each of the code units. Each group of code units which is grouped includes code units of which values of the same at least one parameter are the same. In addition, the code units of each group of code units which is grouped are entropy coded in parallel.

Abstract: An apparatus and a method for compressing a picture by wavelet transform and entropy coding, in which the processing load of arithmetic coding may be relieved and rate control may be carried out effectively, while still maintaining the picture quality. An encoding object prediction unit predicts bitplanes to be encoded and extracts only those bitplanes which are to be encoded. An EBCOT unit generates an encoding pass from one bitplane to be encoded to another to execute arithmetic coding. In controlling the code volume to a target code volume, a rate controller sums the arithmetic codes in a sequence from the arithmetic code with the highest bit position in the totality of the code blocks of an input picture to the arithmetic code of the lowermost bit, from one bitplane to another or from one encoding pass to another, and halts the summation when the predetermined target code volume is exceeded.

Abstract: An image processing device including: selecting section configured to select coded data corresponding to coefficient data of a subband necessary to generate a decoded image of a predetermined resolution from coded data generated by coding a line block including a coefficient data group of each subband, the line block being generated by decomposing image data of a predetermined number of lines into each frequency band by hierarchical analysis filter processing and including at least one line or more of coefficient data of a subband of a lowest-frequency component; decoding section configured to decode the coded data selected by the selecting means; and synthesis filter section configured to hierarchically perform synthesis filter processing, synthesize the coefficient data obtained by decoding the coded data by the decoding means, and generate the decoded image of the predetermined resolution.

Abstract: An image processing apparatus includes an input unit that inputs image data; and an analysis filtering unit that generates coefficient data of a plurality of subbands by performing analysis filtering of the image data input by the input unit for each predetermined number of lines from an upper-end line to a lower-end line such that analysis filtering of a lower-end line of the current picture is completed before analysis filtering of an upper-end line of the next picture starts.

Abstract: An image-comparing apparatus is provided for comparing a code stream obtained by encoding a retrieved image with a specific image for determining whether the code stream is substantially identical to the specific image. The apparatus includes image-characteristic amount extracting unit for analyzing the code stream to extract an image-characteristic amount of the retrieved image. The apparatus further includes encoding-parameter extracting unit for extracting an encoding parameter from the code stream and encoded-data generating unit for encoding the specific image to some extent, on the basis of the encoding parameter, in order to generate encoded specific-image data. A comparing unit compares the image-characteristic amount of the retrieved image with the encoded specific-image data is also provided to determine whether the code stream is substantially identical to the specific image.

Abstract: An encoding apparatus includes: a first processing unit performing predetermined first processing of image data to be encoded before performing encoding; an encoding unit performing the encoding of the image data of which the first processing has been performed by the first processing unit to generate a code stream; a second processing unit performing predetermined second processing of the code stream generated through the encoding of the image data performed by the encoding unit; and a control unit controlling a processing speed of the encoding performed by the encoding unit in accordance with a processing speed of the first processing by the first processing unit and a processing speed of the second processing by the second processing unit.

Abstract: An information processing apparatus includes: a synthesis filter unit configured to execute synthesis filtering for coefficient data of each subband, obtained by decoding a code stream of a reversibly-encoded image and performing band division, in each predetermined number of lines or in each predetermined block to obtain baseband image data on a line basis; a storage unit configured to store the baseband image data obtained by the synthesis filter unit; an analysis filter unit configured to read the baseband image data stored in the storage unit and execute analysis filtering for the image data to divide the image data up to a predetermined division level; and a control unit configured to control the analysis filter unit to execute analysis filtering as soon as the amount of the baseband image data stored in the storage unit reaches a data amount allowing analysis filtering.

Abstract: A coding parameter extracting unit extracts and supplies coding parameters of a code stream to an image characteristic amount output unit. A code stream characteristic amount extracting unit outputs a first vector calculated based on the number of zero bit planes for each code block extracted by analyzing the code stream. The image characteristic amount output unit uses the coding parameters other than a quantization step size of the code stream to output a second vector calculated based on the number of zero bit planes for each code block of a specific image. A comparing unit compares the first and second vectors for each code block and makes a matching decision between the code stream and the specific image.

Abstract: The present invention relates to an information processing device and method, program, and communication system, whereby encoded data can be transmitted with low delay. A data control unit 137 causes encoded data supplied in order from lowband component to be temporarily accumulated in a memory unit 301 and counts the code amount of the encoded data accumulated, cuts off obtaining of encoded data at the stage where the encoded data reaches a predetermined amount, reads out part or all of encoded data accumulated in the memory unit 301, and supplies to a packetizing unit 302 as return encoded data. The present invention can be applied to, for example, a digital triax system.

Abstract: An information processing apparatus includes: a coding mechanism for generating hierarchical data hierarchized in descending order of importance with respect to resolution from image data, and coding the hierarchical data for each hierarchy; and a redundancy coding mechanism for blocking the hierarchical data for each of the hierarchies using a block size determined for each of the hierarchies on the basis of dependencies of the hierarchies between pieces of the hierarchical data generated by the coding mechanism or between the hierarchical data and the image data, and performing redundancy coding to generate redundant data of the hierarchical data for each of the blocks.

Abstract: Analysis filter processing is recursively repeated on horizontal and vertical low frequency component coefficients obtained as a result of the analysis filter processing, until a predetermined decomposition level is reached. Coefficients obtained during a process of computation in the analysis filter processing and, except for a preset decomposition level, horizontal and vertical low frequency component coefficients obtained as a result of the computation in the analysis filter processing are stored in a first storage section independently for each decomposition level. The coefficients stored in the first storage section are read as appropriate and the read coefficients are supplied for the analysis filter processing. The horizontal and vertical low frequency component coefficients of the preset decomposition level are stored in a second storage section. The coefficients stored in the second storage section are read as appropriate. The read coefficients are supplied for the analysis filter processing.

Abstract: An information processing apparatus includes a device for performing horizontal analysis filtering, a device for performing vertical analysis filtering, and a device for horizontal control. The information processing apparatus also includes a first control device. This device allows the device for horizontal control to repetitively perform the horizontal control until the horizontal analysis filtering is performed on all of columns of a processing object line. The information processing apparatus further includes a device for vertical control and a second control device that allows the device for vertical control to repetitively perform the vertical control until the vertical analysis filtering is performed on all of lines.

Abstract: The present invention relates illustratively to a video camera for recording image pickup results constituting moving pictures, an electronic still camera, and a monitoring apparatus. The invention envisages varying the charge storage time TE or the frame period of image pickup means 3 or the processing time TC of data compressing means 8 in accordance with the processing time TC of the data compressing means 8.

Abstract: An encoding method encodes, with an encoding device, second data made up of a plurality of first data representing predetermined numerical values. The encoding method includes taking a significant digit having, of the numerical values represented by each of the first data, the greatest absolute value, as a maximum significant digit of the first data. The encoding method also includes outputting, with the encoding device, code indicating the maximum significant digit and code indicating whether or not the maximum significant digit has changed. The encoding method additionally includes outputting code indicating the absolute value of a numerical value represented by the first data. Further, the encoding method includes outputting code indicating the sign of a numerical value represented by the first data.

Abstract: Disclosed herein is an information processing device including a bitplane expanding section, a coding section, a selecting section, and a selection controlling section. The bitplane expanding section expands image data into bitplanes as sets of bits at identical places in each unit of a predetermined number of pieces of data each having a bit depth of a plurality of bits. The coding section codes the image data expanded by the bitplane expanding section in each the bitplane in predetermined order. The selecting section selects compressed data and non-compressed data as a result of coding of the image data. The selection controlling section controls the coding section to stop a coding process and selecting the non-compressed data for a bitplane situated at a position subsequent to a bitplane for which the non-compressed data is selected by the selecting section in the predetermined order.

Abstract: The present invention relates to an encoding device and an encoding method, and a decoding device and a decoding method which make it possible to obtain a decoded image with low delay upon transferring an encoded image.