Image processing apparatus and method which compresses image data of each region using a selected encoding method
    17.
    发明授权
    Image processing apparatus and method which compresses image data of each region using a selected encoding method 失效
    使用选择的编码方法对各区域的图像数据进行压缩的图像处理装置和方法

    公开(公告)号:US07194140B2

    公开(公告)日:2007-03-20

    申请号:US10286776

    申请日:2002-11-04

    IPC分类号: G06K9/36 G06K1/00

    摘要: This invention has as its object to provide an image processing apparatus, which can obviate the need for image re-input, can effectively generate encoded data that falls within a set size, and can minimize deterioration of image quality. To this end, an image processing apparatus according to this invention includes first discrimination unit for discriminating the type of image of each of a plurality of regions, which form image data input, second discrimination unit for discriminating if the image data is inputted by a continuous scan of images, selection unit for selecting an encoding method used in compression of each region on the basis of discrimination results of the first and second discrimination unit, first compression unit for compressing image data of each region using the encoding method selected by the selection unit, and second compression unit for compressing information that pertains to the type of image of each region.

    摘要翻译: 本发明的目的是提供一种可以避免对图像重新输入的需要的图像处理装置,可以有效地生成落在设定尺寸内的编码数据,并且可以最小化图像质量的劣化。 为此,根据本发明的图像处理装置包括:第一鉴别单元,用于鉴别形成图像数据的多个区域中的每一个的图像类型;第二鉴别单元,用于鉴别图像数据是否由 连续扫描图像,选择单元,用于基于第一和第二鉴别单元的鉴别结果来选择用于压缩每个区域的编码方法;第一压缩单元,用于使用所选择的编码方法压缩每个区域的图像数据 以及用于压缩与每个区域的图像类型有关的信息的第二压缩单元。

    Image processing apparatus and method for compression-encoding image area information
    18.
    发明授权
    Image processing apparatus and method for compression-encoding image area information 有权
    用于对图像区域信息进行压缩编码的图像处理装置和方法

    公开(公告)号:US07257264B2

    公开(公告)日:2007-08-14

    申请号:US10230276

    申请日:2002-08-29

    IPC分类号: G06K9/36 G06K9/46

    摘要: From inputted multilevel image data it is generated, for each pixel, image area information constituted by an image area component indicating whether the pixel exists in a character•line drawing area or halftone area and an image area component indicating whether the pixel is chromatic or achromatic. The information is encoded by a lossless encoding unit on a block basis and stored, and an amount of code is monitored. When the amount of code exceeds a target amount, the lossless encoding unit performs encoding upon changing image area components, of subsequently input image area components, which coincide with a condition. The codes that have already been stored are temporarily decoded by a lossless code re-encoding unit, and the above image area components are changed. The resultant data is then re-encoded and stored.

    摘要翻译: 从输入的多级图像数据,对于每个像素,生成由表示像素是否存在于字符线绘制区域或半色调区域中的图像区域分量构成的图像区域信息以及指示像素是彩色还是非彩色的图像区域分量 。 信息由无损编码单元以块为单位编码并存储,并且监视代码量。 当代码量超过目标量时,无损编码单元在改变与条件一致的随后输入的图像区域分量的图像区域分量时执行编码。 已经存储的代码由无损代码重新编码单元临时解码,并且上述图像区域分量被改变。 然后将所得数据重新编码并存储。

    Image processing apparatus and method, computer program, and storage medium
    19.
    发明授权
    Image processing apparatus and method, computer program, and storage medium 失效
    图像处理装置和方法,计算机程序和存储介质

    公开(公告)号:US07127115B2

    公开(公告)日:2006-10-24

    申请号:US10393069

    申请日:2003-03-21

    IPC分类号: G06K9/36 G06K9/46

    CPC分类号: G06T9/005

    摘要: The present invention allows an image to be coded within a target size without necessitating the image to be input again during the coding of the image, with a mode reflecting a user's intention for coding. To solve this problem, input image data is coded at coding unit 102 and stored into first and second memories, respectively. Coding sequence unit 108 monitors the quantity of codes. When a set value is determined to be reached, coding sequence unit 108 makes data in first memory to be discarded and directs coding means to further increase a quantization step, and continues coding. As previous coded data is stored in second memory, the data is re-coded with the same quantization step as that of coding unit 102 after changing of a parameter at re-coding unit 109, and the re-coded data is stored into first and second memory. At this moment, coding unit 102 and re-coding unit 109 perform an operation and coding on quantization error according to a mode of quantization operation designated at mode designation unit 125.

    摘要翻译: 本发明允许将图像编码在目标尺寸内,而不需要在图像编码期间再次输入图像,其中模式反映用户的编码意图。 为了解决这个问题,输入图像数据被分别编码在编码单元102中并存储到第一和第二存储器中。 编码序列单元108监视代码的数量。 当确定要达到设定值时,编码序列单元108使第一存储器中的数据被丢弃,并指示编码装置进一步增加量化步长,并继续编码。 由于先前的编码数据存储在第二存储器中,所以在重新编码单元109中改变参数之后,以与编码单元102相同的量化级重新编码数据,并将重新编码的数据存储在第一存储器 第二个记忆 此时,编码单元102和重新编码单元109根据在模式指定单元125指定的量化操作的模式来执行对量化误差的操作和编码。

    Image processing apparatus and control method for inputting image data and encoding the data
    20.
    发明授权
    Image processing apparatus and control method for inputting image data and encoding the data 有权
    用于输入图像数据并对数据进行编码的图像处理装置和控制方法

    公开(公告)号:US07106911B2

    公开(公告)日:2006-09-12

    申请号:US10171647

    申请日:2002-06-17

    IPC分类号: G06K9/36 G06K1/00

    摘要: An image input through an input unit is compressed by an encoding unit and stored in first and second memories. A first counter counts the data in its code amount. When the amount of encoded data generated reaches a predetermined size, an encoding sequence control unit sets quantization steps in the encoding unit and re-encoding unit to increase compression ratios. The encoding sequence control unit clears the first memory, causes the re-encoding unit to re-encode the encoded data stored in the second memory, and stores the resultant data in the first memory. Since the encoding unit continues encoding data with the set quantization step, the encoded data are stored in the first memory from the start of the image. Subsequently, every time the data amount stored in the first memory reaches a predetermined amount, the quantization step is increased, and the processing is repeated.

    摘要翻译: 通过输入单元输入的图像由编码单元压缩并存储在第一和第二存储器中。 第一个计数器以其代码量计数数据。 当生成的编码数据量达到预定大小时,编码序列控制单元在编码单元和再编码单元中设置量化步长以增加压缩率。 编码序列控制单元清除第一存储器,使再编码单元重新编码存储在第二存储器中的编码数据,并将结果数据存储在第一存储器中。 由于编码单元以设定的量化步长继续编码数据,所以编码数据从图像的开始被存储在第一存储器中。 随后,每当存储在第一存储器中的数据量达到预定量时,增加量化步长,并重复处理。