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    • 5. 发明授权
    • Image processing apparatus and image processing method including adjustment of coded data to specified target size
    • 图像处理装置和图像处理方法,包括将编码数据调整到指定的目标尺寸
    • US07321693B2
    • 2008-01-22
    • US10695473
    • 2003-10-27
    • Yukio Kadowaki
    • Yukio Kadowaki
    • G06K9/36G06K9/46G06K9/48H04N7/12H04N1/32H04B1/66
    • H04N19/16H04N19/13H04N19/63H04N19/645
    • An image processing apparatus and an image processing method are disclosed for generating coded data having a desired data size at a high speed. The image processing apparatus includes a coding part, two memories, a setting part and a data size adjustment part. The coding part partitions a wavelet coefficient of image data into bit-planes and generates coded data of the image data through entropy coding on the wavelet coefficient for each of the bit-planes. The data size adjustment part adjusts a size of the coded data such that the size falls within an acceptable range including the target size set by the setting part by sequentially discarding a portion of the coded data in a least significant order based on the size of the coded data portion corresponding to each of the bit-planes.
    • 公开了一种用于以高速产生具有所需数据大小的编码数据的图像处理装置和图像处理方法。 图像处理装置包括编码部分,两个存储器,设置部分和数据大小调整部分。 编码部分将图像数据的小波系数分割成位平面,并通过对每个位平面的小波系数进行熵编码来生成图像数据的编码数据。 数据大小调整部分,通过以最小有序的顺序依次丢弃一部分编码数据,调整编码数据的大小,使其大小落入由设定部设定的目标尺寸的可接受范围内 对应于每个位平面的编码数据部分。
    • 7. 发明授权
    • Partial product generating circuit
    • 部分产品生成电路
    • US6066978A
    • 2000-05-23
    • US186581
    • 1998-11-05
    • Yukio Kadowaki
    • Yukio Kadowaki
    • G06F7/53G06F7/52G06F7/533H03K17/62
    • G06F7/5338
    • A group of pass transistors causes x.sub.i, x.sub.i-- B to pass therethrough when 1X indicates affirmation but not pass therethrough when 1X indicates negation, and causes x.sub.i-1, x.sub.i-1-- B to pass therethrough when 2X indicates affirmation but not pass therethrough when 2X indicates negation. In a switch-transistor arrangement portion, when each of 1X and 2X has a value indicating negation, a first electric potential appears at a first node, and a second electric potential appears at a second node. A positive-and-negative-responding pass-transistor group causes the value of the first node to pass therethrough when COMP has a value indicating negation, and causes the value of the second node to pass therethrough when COMP has a value indicating affirmation.
    • 当1X表示肯定但是当1X表示否定时,一组通过晶体管导致xi,xi-B通过,当1X表示否定时,xi-1,xi-1-B通过,当2X表示肯定但不通过时, 2X表示否定。 在开关晶体管布置部分中,当1X和2X中的每一个具有指示否定的值时,在第一节点处出现第一电位,并且在第二节点处出现第二电位。 当COMP具有指示否定的值时,正和负反应的传输晶体管组导致第一节点的值通过,并且当COMP具有表示肯定的值时,使第二节点的值通过。
    • 9. 发明授权
    • Image compressing apparatus that achieves desired code amount
    • 实现期望代码量的图像压缩装置
    • US07440630B2
    • 2008-10-21
    • US10550264
    • 2004-03-24
    • Yukio Kadowaki
    • Yukio Kadowaki
    • G06K9/36
    • H04N19/61H04N19/115H04N19/146H04N19/63
    • An apparatus for compressing an image, comprising: a coding unit configured to generate code data by encoding data derived from image data; a memory unit which stores truncation data items identified by respective data sequence numbers, wherein a truncation data item specifies a way in which code data is removed from the generated code data, such that the larger the data sequence number, the higher a quality of a reproduced image obtained by decoding the generated code data after the removal of code data, or such that the larger the data sequence number, the lower the quality of the reproduced image; and a rate control unit configured to identify a data sequence number of a truncation data item that provides a code data parameter substantially equal to a desired value, said code data parameter being responsive to an amount of code data removal.
    • 一种用于压缩图像的装置,包括:编码单元,被配置为通过对从图像数据导出的数据进行编码来生成代码数据; 存储单元,其存储由各个数据序列号识别的截断数据项,其中截断数据项指定从所生成的代码数据中去除代码数据的方式,使得数据序列号越大,a的质量越高 通过在删除代码数据之后对生成的代码数据进行解码获得的再现图像,或者使得数据序列号越大,再现图像的质量越低; 以及速率控制单元,被配置为识别提供基本上等于期望值的代码数据参数的截断数据项的数据序列号,所述代码数据参数响应于代码数据移除量。