Abstract: An inverse wavelet transformer causes a level-graded buffer to store one of two lines of coefficient data generated through a synthesis filtering operation. In order to adjust an output timing of image data, the inverse wavelet transformer causes an output buffer to store temporarily the other line of the two lines of coefficient data in a period throughout which the output buffer stores no baseband image data and then causes the level-graded buffer to store the other line of the two lines of coefficient data. In this way, the level-graded buffer stores coefficients generated through the synthesis filtering operation on a line-by-line basis.

Abstract: An information processing device to execute programs performing encoding processing configured from a plurality of processes, includes: a program storage unit to store a plurality of encoding programs wherein an allocation pattern for a computation processing unit as to each of a plurality of processes comprising the encoding processes or the disposal pattern of memory utilized in the plurality of processes are each different; a program selecting unit to select an encoding program to be utilized in the event of executing encoding processing from a plurality of encoding programs stored with the program storage unit, as a utilized encoding program; and a program executing unit to execute the encoding processing employing a utilized encoding program selected with the program selecting unit.

Abstract: An information processing device includes: a synthesis filter processing unit to subject image data to analysis filtering for dividing the frequency components of the image data into highband components and lowband components hierarchically, and subject the frequency components of the image data divided into a plurality of frequency components to synthesis filtering for mutually synthesizing the frequency components of the frequency band of the same division level recursively; a frequency component holding unit to hold frequency components of a division level one order lower, generated by the synthesis filtering performed by the synthesis filter processing unit; and a control unit to cause the synthesis filter processing unit to recursively perform the synthesis filtering processing on each frequency component held in the frequency component holding unit, in an order whereby the image data is restored in order from the top of the image, a plurality of lines at a time.

Abstract: An image data processing apparatus includes a memory for storing coefficient data obtained by performing a wavelet transform on image data, a calculation unit for calculating a memory address of the memory storing the coefficient data, based on an encoding parameter of the image data and an amount of data of the coefficient data, a memory area reservation unit for reserving a memory area where the coefficient data is to be written, in accordance with the memory address calculated by the calculation unit, and a write unit for rearranging the coefficient data in the order of inverse wavelet transform and writing the order-rearranged coefficient data onto the memory area reserved by the memory area reservation unit.

Abstract: An information processing device, configured to divide the frequency components of image data into a plurality of frequency bands, includes an analysis filtering unit configured to perform analysis filtering for dividing the frequency components into highband components and lowband components recursively, and a holding unit configured to supply, in sync with timing for holding data supplied as a computation result of the analysis filtering by the analysis filtering unit, the data already held, which is data necessary for computation of next analysis filtering to the analysis filtering unit.

Abstract: A wavelet transformer performs an analysis filtering operation on image data while storing coefficient data generated in the middle of the analysis filtering operation onto an intermediate calculation buffer. The wavelet transform segments the generated coefficient data into subbands using write buffers and writes the coefficient data on a per subband by subband basis onto a ring buffer of a coefficient rearranging buffer in a main memory. An entropy encoder reads the coefficient data stored on the ring buffer of the coefficient rearranging buffer via read buffers in an order of a synthesis process, entropy encodes the read coefficient data, writes the encoded coefficient data onto the main memory via a write buffer and outputs the resulting coefficient data.

Abstract: An information processing device includes: an analysis filtering section that applies to image data an analysis filtering process of decomposing frequency components of the image data into each frequency band by lifting operations; an encoding section that performs an encoding process of encoding the frequency components decomposed into each frequency band by the analysis filtering section; and a control section that controls execution of the encoding process by the encoding section with respect to each of the frequency components, so that the encoding process with respect to each of the frequency components is executed during a period after the analysis filtering process is finished with respect to a plurality of lines of the image data that are inputted, until a plurality of lines of next image data are inputted.

Abstract: An information processing apparatus for encoding image data, includes a filter unit for performing a filtering operation on the image data in a layer fashion to generate a plurality of subbands including coefficient data segmented on a per frequency band basis, an intermediate data storage unit for storing intermediate data generated in the middle of the filtering operation of the filter unit, a coefficient storage unit for storing the coefficient data generated in the filtering operation of the filter unit, and a coefficient rearranging unit for performing a rearranging operation to rearrange the coefficient data stored on the coefficient storage unit so that the coefficient data is output in a predetermined order. The intermediate data storage unit writes and reads data thereon at a speed higher than the coefficient storage unit and being smaller in storage capacity than the coefficient storage unit.

Abstract: In an information processing apparatus, a synthesis filtering process is performed on image data which has been subjected to hierarchical executions of an analysis filtering process, each execution of the analysis filtering process having caused frequency components of the image data to be divided into high-frequency components and low-frequency components, the total hierarchical executions of the analysis filtering process having caused the image data to be divided into a plurality of frequency bands, the synthesis filtering process involving synthesizing frequency components of frequency bands in each division level by performing a lifting calculation. The execution of the synthesis filtering process is controlled for each lifting calculation such that the lifting calculations are performed in an order that allows image data to be produced part by part, each part including a plurality of lines.

Abstract: In wavelet transform encoding, high-quality encoding is to be realized by enabling picture quality control from one fractional area to another. An input picture 100 is read out in an amount corresponding to a number of lines required for wavelet transform and buffered in a memory unit 6. The input picture then is wavelet transformed in a wavelet transform unit 2 and quantized in a coefficient quantizing unit 3. In quantizing wavelet transform coefficients, the wavelet transform coefficients are multiplied by weighting coefficients from one sub-band to another. The weighting coefficients are determined using the analysis information of a specified block area in a picture, such as motion information and texture fineness information. This enables fine quantization control in terms of a picture block as a unit.

Abstract: The present invention is applied to imaging apparatuses including video cameras for recording moving pictures, electronic still cameras, monitoring devices and such. An image pickup means 3 and an image compressing means 5 are connected integrally by a wiring layer formed on a surface of the image pickup means 3 opposite a light-receiving surface of the image pickup means 3. The image pickup means 3 provides processing units of image data S1 relating to an image compressing process sequentially. Image data on a partial area in an effective image area is compressed to detect a code amount in advance. A data compressing ratio is determined on the basis of the code amount, and the image data is compressed at the image compressing ratio.

Abstract: In an image synthesizer (1), code stream analyzers (10, 11), code block extraction units (12, 13) and EBCOT decoders (14, 15) work together to decode encoded code streams (D10, D11) encoded according to the MPEG-2000 Standard and generate quantization coefficients (D16, D17) for each code block. In a cross-fading unit (16), multipliers (17, 18) multiply the quantization coefficients (D16, D17) by coefficients (?(t), (1??(t))) and an adder (19) adds together the results of multiplication to provide a cross-fading quantization coefficient (D20). An EBCOT encoder (20), rate controller (21) and code stream generator (22) work together to encode the cross-fading quantization coefficient (D20) to provide a final encoded code stream (D23). Therefore, the image synthesizer (1) can combine two encoded code streams easily and effectively with a reduced use of a memory capacity.

Abstract: An information processing apparatus for encoding image data includes: a rearranging unit for rearranging coefficient data divided for each frequency band in order of executing synthesis processing for synthesizing the coefficient data of multiple sub-bands divided into frequency bands to generate image data for each line block including image data equivalent to the number of lines necessary for generating coefficient data equivalent to one line of the sub-band of the lowest frequency components; a control unit for calculating a new quantization step size at the time of encoding the image data for each coding unit using the ratio between the generated code amount at the time of encoding with a known quantization step size and a target code amount at the time of encoding the image data; and an encoding unit for encoding the coefficient data for each coding unit to generate encoded data using the calculated quantization step size.

Abstract: An information processing apparatus includes: a rearranging unit for rearranging coefficient data divided for each frequency band in order of executing synthesis processing for synthesizing the coefficient data of multiple sub-bands divided into frequency bands to generate image data for each line block; a calculating unit for calculating a quantization step size when encoding the image data for each coding unit which is the processing increment of encoding; a correcting unit for correcting the value of the quantization step size calculated by the calculating unit using a variable that exhibits the evenness of the code amount within a picture of the image data and takes such a large value that there is little deviation of the code amount; and an encoding unit for encoding the coefficient data rearranged by the rearranging unit for each coding unit to generate encoded data using the quantization step size corrected by the correcting unit.

Abstract: A system allows data transfer in which the most appropriate packet processing is executed according to the performance of a terminal. A data transmission side stores scalable-encoded data in a packet as a payload, assigns priority-level information corresponding to a layer level of the encoded data stored in the packet to a packet header, and transmits the packet. A data receiving side performs processing by referring to the priority-level information. A level of priority dependent on an application is specified in an RTP payload header according to the degree of importance of scalable-encoded data, and a level of priority is further specified in an IP header. The most appropriate packet processing based on the performance of a terminal is allowed. Re-transmission control based on the layer level of encoded data is also allowed.

Abstract: In a color converter unit of an image encoding apparatus, a subtractor unit subtracts Y from Z and a divider unit divides the result of this subtraction (Z?Y) by 2 and supplies the result to a component signal Y1 to an image coding unit. Another subtractor unit subtracts Y from X and another divider unit divides the result of this subtraction (X?Y) by 2 and supplies the result as a component signal Y2 to the image coding unit. Y remains unprocessed and is supplied as a component signal Y0 to the image coding unit. The image coding unit compression-codes the converted three component signals Y0, Y1, Y2 according to the JPEG-2000 system to generate an encoded code stream. Thus, an image in the XYZ color space is compressed and expanded highly efficiently.

Abstract: An information processing device configured to process moving image data includes a plurality of calculating units configured to transform a frame rate by subjecting two pieces of frame data to addition and subtraction; and a control unit configured to control the plurality of calculating units to subject each frame data of the moving image data to at least one of the addition and the subtraction by the number of times necessary for transforming the frame rate of the moving image data into a desired rate.

Abstract: In wavelet transform encoding, high-quality encoding is to be realized by enabling picture quality control from one fractional area to another. An input picture 100 is read out in an amount corresponding to a number of lines required for wavelet transform and buffered in a memory unit 6. The input picture then is wavelet transformed in a wavelet transform unit 2 and quantized in a coefficient quantizing unit 3. In quantizing wavelet transform coefficients, the wavelet transform coefficients are multiplied by weighting coefficients from one sub-band to another. The weighting coefficients are determined using the analysis information of a specified block area in a picture, such as motion information and texture fineness information. This enables fine quantization control in terms of a picture block as a unit.

Abstract: In an image encoder is provided, including a to-be-encoded object prediction unit which counts quantization coefficients which are newly made significant, for example, when each bit plane is encoded, on the basis of quantization coefficient for each bit plane in all code blocks to provide a feature amount, estimates the number of generated codes on the basis of the feature amount, and adds the estimated number of codes in a predetermined order. When an initial target number of codes is reached, the to-be-encoded object prediction unit stops the addition, and supplies the entropy encoder with information on the bit planes having the quantization coefficients thereof been added as to-be-encoded object information. In this entropy encoder, only the quantization coefficient in the bit planes represented by the to-be-encoded object information, is processed by three types of encoding passes while truncating the quantization coefficients of the other bit planes.

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.