Abstract: To achieve an encoding system including a highly efficient prediction performed in response to the content of a scene, a significance, and a motion characteristic of a moving picture and the like, memories a, b, c, motion compensator 5 responsive to an arbitrary transform parameter representing the motion of a prediction picture segment for generating a predicted picture by using arbitrary data stored in the memories a, b, c based upon the transform parameter, and memory update unit 15 for allowing the content of one or more of the memories to be updated at an arbitrary period of time, are provided.

Abstract: A motion picture encoding apparatus for encoding a motion picture signal includes a plurality of transform units for different transform schemes, and a transform scheme control unit for selecting, from the plurality of the transform units, the transform unit for the transform scheme adapted to the motion picture signal.

Abstract: A lateral directional difference calculating unit 21 calculates a change degree between pixel levels of pixels adjacent to each other through a boundary of a decoded block and a block adjacent to the decoded block in a lateral direction and calculates a change degree between pixel levels of pixels placed in the block adjacent to the decoded block in the lateral direction, a lateral directional continuity judging unit 23 judges the continuity between the decoded block and the block adjacent to the decoded block in the lateral direction. A longitudinal directional difference calculating unit 22 and a longitudinal directional continuity judging unit 24 are operated in the same manner, a block continuity judging unit 25 judges the continuity between the decoded block and each block adjacent to the decoded block, and an error macro-block judging unit 26 detects an error macro-block according to a judging result of the block continuity judging unit 25.

Abstract: A moving image decoding apparatus sets, if it completes decoding current coded data without detecting an error and if an occurrence of a discontinuity is detected between the current coded data and the next coded data, a resynchronization point at an initial position of subsequent coded data following the next coded data.

Abstract: When a retrieval condition of an attribute list is input from a user interface unit to a retrieval processing unit, the attribute list stored in an attribute list storing unit is retrieved in the retrieval processing unit. Thereafter, attribute information conforming to the retrieval condition is output to and displayed on a displaying unit. Thereafter, when a retrieval condition of the similarity retrieval is input from the user interface unit to the retrieval processing unit, image data stored in the image information storing unit is retrieved in the retrieval processing unit, and specific image data relating to a characteristic descriptor set conforming to the retrieval condition is selected in the retrieval processing unit. Thereafter, the specific image data is output to and displayed on the displaying unit.

Abstract: Any type of media data can be played back on a receiving side regardless of quality conditions of a data transmission line. Therefore, in a differential motion vector limiting unit 10, the number of cases of the inputting of “1” as quality conditions 9 of a data transmission line is counted and held for each unit time by using an internal timer. In simultaneous with the holding of the counted number, a differential motion vector limiting unit 10 refers to the counted number according to input position information 22 of a to-be-coded macro-block for each picture, and differential motion vector limiting information 11 is determined according to the referred counted number. In a motion compensation predicting unit 12, a differential motion vector is calculated, and the differential motion vector is compared with the differential motion vector limiting information 11.

Abstract: In partitioning and encoding an image into multiple regions, the degree of freedom of the region shape has generally been low and setting regions based on image features was difficult. A moving image encoding apparatus includes a region partitioning section, an encoder, and a memory for motion-compensated prediction. The region partitioning section includes a partitioning processing section and a integration processing section. The partitioning processing section partitions the input image based on a criterion relating to the state of partition. The integration processing section integrates mutually close regions based on a criterion relating to the state of integration. Thereafter, each region is encoded. A large variety of region shapes can be produced by the integration processing section.

Abstract: A feature coding unit extracts and encodes a feature of a video signal so as to generate a feature stream. A feature identifying unit checks a decoded feature obtained as a result of decoding the feature stream against a search key from a user for a match so that a video content requested by the user is retrieved.

Abstract: A feature coding unit extracts and encodes a feature of a video signal so as to generate a feature stream. A feature identifying unit checks a decoded feature obtained as a result of decoding the feature stream against a search key from a user for a match so that a video content requested by the user is retrieved.

Abstract: A plurality of moving picture transmitters (11 to 1n) encode a plurality of input objects, respectively, and transmit them onto a network (41). A moving picture receiver (21) receives bitstream data transmitted from each of the plurality of moving picture transmitters (11 to 1n), obtains information on the quality of the network (41), detects an error or the like that occurs in the bitstream data, and transmits priority information on the plurality of objects to the plurality of moving picture transmitters (11 to 1n), respectively. A registration server 31 registers information on the plurality of moving picture transmitters (11 to 1n) and information on the moving picture receiver 21 therein, and delivers them according to circumstances.

Abstract: An image coded data re-encoding apparatus (30) which generates in an image coded data analyzer (310) coded data after signal processing (221) by performing a first digital signal processing on first image coded data (220), supplies an image coded data synthesizer (320) with the coded data after signal processing (221) and multiple signals (222) associated with the first image coded data, and generates in the image coded data synthesizer (320) a second image coded data (240) by performing on the coded data after signal processing (221) a second digital signal processing based on multiple signals (222). The second image coded data is generated without once decoding the first image coded data. This makes it possible to prevent degradation in image quality, delay involved in the transform and an increase of the device size.

Abstract: In partitioning and encoding an image into multiple regions, the degree of freedom of the region shape has generally been low and setting regions based on image features was difficult. A moving image encoding apparatus includes a region partitioning section, an encoder, and a memory for motion-compensated prediction. The region partitioning section includes a partitioning processing section and a integration processing section. The partitioning processing section partitions the input image based on a criterion relating to the state of partition. The integration processing section integrates mutually close regions based on a criterion relating to the state of integration. Thereafter, each region is encoded. A large variety of region shapes can be produced by the integration processing section.

Abstract: When an electric power is supplied to an image communication device of a user to perform telephone communication between the user and a person on the other end of the communication line, an on-off switch is automatically set to an off state on user's side under control of a video mute control unit so as to disconnect a video data coding/decoding unit from a video data receiving unit. Therefore, no video data received in the video data receiving unit is transmitted from the user to the other end of the communication line. Thereafter, when the user inputs a video mute-off instruction, an on-off switch is set to an on state under control of the video mute control unit so as to connect the video data coding/decoding unit and the video data receiving unit. Therefore, video data received in the video data receiving unit is transmitted from the user to the other end of the communication line.

Abstract: In partitioning and encoding an image into multiple regions, the degree of freedom of the region shape has generally been low and setting regions based on image features was difficult. A moving image encoding apparatus includes a region partitioning section, an encoder, and a memory for motion-compensated prediction. The region partitioning section includes a partitioning processing section and a integration processing section. The partitioning processing section partitions the input image based on a criterion relating to the state of partition. The integration processing section integrates mutually close regions based on a criterion relating to the state of integration. Thereafter, each region is encoded. A large variety of region shapes can be produced by the integration processing section.

Abstract: A marker inserting part 2 adds a sync signal is added to an input image signal 1 in its available area, then a signal processing part 4 performs signal processing on a yet-to-be processed image signal 3 added with the sync signal, and a marker detecting part 6 detects the sync signal from a processed image signal 5. Based on the sync signal added to the input image signal 1 and the sync signal detected from the processed signal 5, displacement detecting part 7 detects displacements of pixels or lines of the processed image signal 5 and generates displacement information 8 accordingly, and an image sync correcting part 9 corrects displacements of pixels or lines of the processed image signal 5, based on the displacement information 8.

Abstract: In a picture coding apparatus, even though conditions such as a bit rate are changed, a burden of overhead information arranged in a picture signal is reduced, and the picture signal is coded according to an optimum coding mode without lowering a coding efficiency. A coding mode judging unit 2 has two coding mode tables A and B including identification numbers of coding modes selectable for a picture-to-be-coded, one of the coding mode tables 1 and 2 is selected according to coding mode table selection information, a coding mode corresponding to a better coding efficiency is selected from a plurality of coding modes of the selected coding mode table, and a coded picture signal is obtained.

Abstract: When a request for storage is input, a storage and reconstruction control unit transmits an intra-frame request signal to an image signal transmitting apparatus and also transmits a storage start signal to a coded signal storage unit. When the intra-frame request signal is received, a coding control unit of the image signal transmitting apparatus controls an image coding unit to code the entirety of an image in the intra-frame coding mode and transmits the coded image signal in which the entirety of an image is intra-frame coded to the image signal storage and reconstruction apparatus. The image decoding unit of the image signal storage and reconstruction apparatus decodes the coded image signal and the storage and reconstruction control unit starts the storage with the coded image signal in which the entirety of an image is coded, responsive to the storage start signal.

Abstract: It is an object of the invention to obtain a video encoder and a video decoder performing a highly accurate prediction of a picture, transformed by other than translation, within a short processing time in a small-scaled circuit. A video encoder for performing compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector including a transformed block matching unit for transforming a reference picture portion into a picture portion having a predefined shape for performing motion detection and a motion compensator including a corresponding pel determinator for determining integer pels of real sample points of the transformed reference picture portion corresponding to an integer pel of the input picture block according to the motion parameters supplied from the motion detector as a result of the comparison so as to supply prediction picture data.

Abstract: A coded stream analyzer (102) variable-length decodes an incoming coded stream and extracts encoding parameters for each macroblock, such as an encoding mode, DCT coefficient values, the amount of codes of DCT coefficients, the amount of codes of each macroblock, and a motion vector, from the coded stream. An effective macroblock identification unit (103) then identifies macroblocks each of which can be contained in a moving object as an effective macroblock by using one or more encoding parameters extracted by the coded stream analyzer (102).

Abstract: A motion compensation predicting coding apparatus includes a motion detector for comparing pixel data in an image signal with pixel data of the previous image signal to generate a motion vector. The motion vector is indicative of the displacement differences between the image signal and the previous image signal. The image signal may be organized into blocks of pixel data for a single field or for multiple fields when notion detection is performed on the image signal by the motion detector. A subtracter generates a prediction compensation error signal by subtracting the pixel data in the previous image signal from the pixel data of the image signal. A coder receives the prediction compensation error signal and generates an appropriate coded output. The apparatus may also include an adaptive blocking mechanism for receiving the prediction compensation error signal and organizing the data in the signal into blocks into one of several fashions as dictated by the motion vector.