| Patent application number | Description | Published |
|---|
| 20080199092 | Image Data Generating Method, Apparatus Thereof, Image Distributing System, Image Distributing Apparatus Thereof, and Their Programs - There are included an image data storing means for accumulating image data of JPEG format; an image dividing means for dividing the accumulated JPEG images; and a distributing means for distributing the divided image data to a client. The image dividing means decides a title area containing an image area required for display at the client, and extracts coefficient data, which corresponds to the title area, from the image data accumulated in the image data storing means. The image dividing means then calculates, as coefficient data to be distributed to the client, the values of AC components of the extracted coefficient data as they are but, as to DC components thereof, a result of addition of the values of the DC components to those in the adjacent, immediately preceding title area. The distributing means distributes, as the image data, the coefficient data as calculated to the client. | 08-21-2008 |
| 20090324116 | Encoding and decoding device and encoding method and decoding method - [Problems] To provide an encoding device capable of achieving a sufficient compression ratio even when using a prefix code such as a Huffman code as the entropy encoding method in the wavelet conversion encoding. | 12-31-2009 |
| 20100054617 | CODING AND DECODING DEVICE, CODING AND DECODING METHOD AND PROGRAM - A coding device is comprised of an initial resolution coding unit for coding an initial resolution image sub-sampled from an image at every interval of predetermined pixels, and a high resolution coding unit for coding images at sub-sampling intervals sequentially halved, wherein said high resolution coding unit comprises a pixel value predicting means for, out of the pixels that should be coded in present resolution, predicting a value of a pixel being positioned at a center of its adjacent four pixels already coded in previous resolution from said adjacent four pixels with a linear interpolation, and predicting a value of a remaining pixel from its adjacent four pixels having the above pixel at a center thereof with the linear interpolation, said adjacent four pixels being positioned in an upper, lower, left and right sides of the above pixel, a prediction error calculating means for obtaining a residual between the pixel value of the to-be-coded pixel and the predicted value, and a variable length coding means for coding the residual. | 03-04-2010 |
| 20100315547 | MOVING REGION DETECTION DEVICE - To provide a moving region detection device capable of rapidly and accurately detecting a main moving region from plot data on a computer screen. A moving region detection unit ( | 12-16-2010 |
| 20110002550 | UPDATE REGION DETECTION DEVICE - To provide an update region detection device capable of accurately detecting an update region from plot data on a computer screen. In an update region detection unit ( | 01-06-2011 |
| 20110026598 | MOTION VECTOR DETECTION DEVICE - To provide a motion vector detection device capable of rapidly and accurately detecting a main motion vector from plot data on a computer screen. An edge extraction unit ( | 02-03-2011 |
| 20110103489 | METHOD AND APPARATUS FOR ENCODING AND DECODING BY WAVELET TRANSFORM - A wavelet transform encoding apparatus includes a coefficient encoding unit which encodes each group of multiple wavelet transform coefficients LH, HL, and NH located spatially at the same position within multiple high-frequency subbands belonging to the same hierarchy. At the time, the coefficient encoding unit calculates an encoding parameter for the wavelet transform coefficient of an encoding object based on multiple encoded vicinal wavelet transform coefficients within the multiple high-frequency subbands belonging to the same hierarchy, and encodes the wavelet transform coefficient of the encoding object into a variable-length code by utilizing the calculated encoding parameter. | 05-05-2011 |
| 20110317929 | 2 DIMENSIONAL SIGNAL ENCODING/DECODING METHOD AND DEVICE - An image is divided into subbands by wavelet transform using the Haar function as the base, and the lowest-frequency LL subband is entirely encoded. LH, HL, and HH subband coefficients which belong to the wavelet decomposition level of each hierarchy are then encoded such that coefficients at the same spatial position are encoded at once. The decoding side first decompresses the lowest-frequency LL subband, and then decodes sets of the LH, HL, and HH coefficients at the same spatial position in the subband of each wavelet decomposition level one by one. The decoding side immediately performs inverse wavelet transform by using the coefficient values, thereby obtaining the LL coefficient value of the next wavelet decomposition level. This makes it possible to sufficiently increase the processing speed even when the wavelet encoding/decoding is performed using a sequential CPU. | 12-29-2011 |
