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1. 发明申请

US20060045362A1 Image encoding apparatus and method, computer program, and computer-readable storage medium 有权
标题翻译：图像编码装置和方法，计算机程序和计算机可读存储介质
公开(公告)号：US20060045362A1
公开(公告)日：2006-03-02
申请号：US11193569
申请日：2005-08-01
申请人： Naoki Ito , Hirokazu Tamura , Hiroshi Kajiwara , Yuki Matsumoto , Hidefumi Osawa , Ken-ichi Ohta , Haruo Shimizu
发明人： Naoki Ito , Hirokazu Tamura , Hiroshi Kajiwara , Yuki Matsumoto , Hidefumi Osawa , Ken-ichi Ohta , Haruo Shimizu
IPC分类号： G06K9/36
CPC分类号： H04N19/12 , H04N19/15
摘要： According to this invention, encoded data of a target data amount is generated by one image input operation while both lossless encoding and lossy encoding are adopted. For this purpose, a first memory stores encoded data of a shorter encode length among encoded data generated by a first encoding unit which performs lossy encoding and encoded data generated by a second encoding unit which performs lossless encoding. A second memory stores encoded data from a second encoding unit. When an encoding sequence control unit determines that the encoded data amount in the first memory has exceeded the target data amount, the encoding sequence control unit discards data in the first memory, sets a quantization parameter for a higher compression ratio for the first encoding unit, and causes the first encoding unit to execute encoding. Encoded data before the encoded data amount is determined to have exceeded the target data amount is re-encoded by a re-encoding unit.
摘要翻译：根据本发明，通过一个图像输入操作产生目标数据量的编码数据，同时采用无损编码和有损编码。为此，第一存储器存储由执行有损编码的第一编码单元生成的编码数据中的较短编码长度的编码数据和进行无损编码的第二编码单元生成的编码数据。第二存储器存储来自第二编码单元的编码数据。当编码序列控制单元确定第一存储器中的编码数据量已经超过目标数据量时，编码序列控制单元丢弃第一存储器中的数据，为第一编码单元设置较高压缩比的量化参数，并使第一编码单元执行编码。确定已经超过目标数据量的编码数据量之前的编码数据被重新编码单元重新编码。

2. 发明授权

US07680345B2 Image encoding apparatus and method, computer program, and computer-readable storage medium 有权
标题翻译：图像编码装置和方法，计算机程序和计算机可读存储介质
公开(公告)号：US07680345B2
公开(公告)日：2010-03-16
申请号：US11193569
申请日：2005-08-01
申请人： Naoki Ito , Hirokazu Tamura , Hiroshi Kajiwara , Yuki Matsumoto , Hidefumi Osawa , Ken-ichi Ohta , Haruo Shimizu
发明人： Naoki Ito , Hirokazu Tamura , Hiroshi Kajiwara , Yuki Matsumoto , Hidefumi Osawa , Ken-ichi Ohta , Haruo Shimizu
IPC分类号： G06K9/36
CPC分类号： H04N19/12 , H04N19/15
摘要： According to this invention, encoded data of a target data amount is generated by one image input operation while both lossless encoding and lossy encoding are adopted. For this purpose, a first memory stores encoded data of a shorter encode length among encoded data generated by a first encoding unit which performs lossy encoding and encoded data generated by a second encoding unit which performs lossless encoding. A second memory stores encoded data from a second encoding unit. When an encoding sequence control unit determines that the encoded data amount in the first memory has exceeded the target data amount, the encoding sequence control unit discards data in the first memory, sets a quantization parameter for a higher compression ratio for the first encoding unit, and causes the first encoding unit to execute encoding. Encoded data before the encoded data amount is determined to have exceeded the target data amount is re-encoded by a re-encoding unit.
摘要翻译：根据本发明，通过一个图像输入操作产生目标数据量的编码数据，同时采用无损编码和有损编码。为此，第一存储器存储由执行有损编码的第一编码单元生成的编码数据中的较短编码长度的编码数据和进行无损编码的第二编码单元生成的编码数据。第二存储器存储来自第二编码单元的编码数据。当编码序列控制单元确定第一存储器中的编码数据量已经超过目标数据量时，编码序列控制单元丢弃第一存储器中的数据，为第一编码单元设置较高压缩比的量化参数，并使第一编码单元执行编码。确定已经超过目标数据量的编码数据量之前的编码数据被重新编码单元重新编码。

3. 发明授权

US07194140B2 Image processing apparatus and method which compresses image data of each region using a selected encoding method 失效
标题翻译：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
申请人： Naoki Ito , Tadayoshi Nakayama , Ken-ichi Ohta , Hidefumi Osawa , Shinichi Kato
发明人： Naoki Ito , Tadayoshi Nakayama , Ken-ichi Ohta , Hidefumi Osawa , Shinichi Kato
IPC分类号： G06K9/36 , G06K1/00
CPC分类号： H04N1/3333 , G06K15/1852 , H04N1/32128 , H04N1/40062 , H04N1/41 , H04N2201/3243 , H04N2201/3278 , H04N2201/33357
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。

4. 发明授权

US07257264B2 Image processing apparatus and method for compression-encoding image area information 有权
标题翻译：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
申请人： Tadayoshi Nakayama , Ken-Ichi Ohta , Hidefumi Osawa , Shinichi Kato , Naoki Ito
发明人： Tadayoshi Nakayama , Ken-Ichi Ohta , Hidefumi Osawa , Shinichi Kato , Naoki Ito
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N1/411 , H04N19/124 , H04N19/15 , H04N19/192 , H04N19/40 , H04N19/423 , H04N19/436 , H04N19/60
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。

5. 发明授权

US07127115B2 Image processing apparatus and method, computer program, and storage medium 失效
标题翻译：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
申请人： Hidefumi Osawa , Tadayoshi Nakayama , Ken-ichi Ohta , Shinichi Kato , Naoki Ito
发明人： Hidefumi Osawa , Tadayoshi Nakayama , Ken-ichi Ohta , Shinichi Kato , Naoki Ito
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。

6. 发明授权

US07106911B2 Image processing apparatus and control method for inputting image data and encoding the data 有权
标题翻译：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
申请人： Ken-ichi Ohta , Tadayoshi Nakayama , Hidefumi Osawa , Shinichi Kato , Naoki Ito
发明人： Ken-ichi Ohta , Tadayoshi Nakayama , Hidefumi Osawa , Shinichi Kato , Naoki Ito
IPC分类号： G06K9/36 , G06K1/00
CPC分类号： H04N1/41 , H04N19/126 , H04N19/15 , H04N19/156 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/192 , H04N19/42 , H04N19/423 , H04N19/60
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。

7. 发明申请

US20100142840A1 IMAGE ENCODING APPARATUS AND METHOD OF CONTROLLING THE SAME 有权
标题翻译：图像编码装置及其控制方法
公开(公告)号：US20100142840A1
公开(公告)日：2010-06-10
申请号：US12620241
申请日：2009-11-17
申请人： Hiroshi Kajiwara , Yuki Shiraishi , Naoki Ito , Hirokazu Tamura
发明人： Hiroshi Kajiwara , Yuki Shiraishi , Naoki Ito , Hirokazu Tamura
IPC分类号： G06K9/36
CPC分类号： H04N19/59 , H04N19/12 , H04N19/14 , H04N19/17 , H04N19/176 , H04N19/46 , H04N19/587 , H04N19/60 , H04N19/70
摘要： Resolution interpolation data is generated by relatively simple processing. This enables image encoding by simple and quick processing to attain high image quality and high compression performance. To do this, a tile divider extracts tile data of 32×32 pixels from encoding target original image data. A resolution converter samples one pixel of a block of 2×2 pixels in the tile data, thereby generating reduced tile data of a reduced image. An interpolation data generator generates interpolation data to be used to generate tile data having the original resolution from the reduced tile data. Based on the interpolation data of a tile of interest, an encoding method selector outputs a control signal indicating which one of lossless encoding and lossy encoding should be executed for the reduced tile data. A code stream generator outputs the generated encoded data and interpolation data as encoded image data.
摘要翻译：通过相对简单的处理生成分辨率插值数据。这使得能够通过简单快速的处理实现图像编码，从而获得高图像质量和高压缩性能。为此，瓦片分割器从编码目标原始图像数据中提取32×32像素的图块数据。分辨率转换器对瓦片数据中的2×2像素的块的一个像素进行采样，从而生成缩小图像的减少的瓦片数据。内插数据生成器生成用于从缩小的瓦片数据生成具有原始分辨率的瓦片数据的内插数据。基于感兴趣的图块的内插数据，编码方法选择器输出指示对于缩小的瓦片数据应当执行哪一个无损编码和有损编码的控制信号。代码流生成器将生成的编码数据和内插数据输出为编码图像数据。

8. 发明授权

US08331705B2 Image encoding apparatus and method of controlling the same 有权
标题翻译：图像编码装置及其控制方法
公开(公告)号：US08331705B2
公开(公告)日：2012-12-11
申请号：US12620194
申请日：2009-11-17
申请人： Yuki Shiraishi , Hiroshi Kajiwara , Naoki Ito , Hirokazu Tamura
发明人： Yuki Shiraishi , Hiroshi Kajiwara , Naoki Ito , Hirokazu Tamura
IPC分类号： G06K9/36
CPC分类号： H04N1/41 , H04N19/105 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/70
摘要： This invention generates efficient encoded data to restore original image data from reduced image data. An input unit inputs block data of 2×2 pixels from original image data. A converter generates reduced image data having a size smaller than the original image data by sampling one pixel data at a preset position in the input block data. A generator generates encoded data to restore three non-sampling target pixel data in each block data so as to restore the original image data from the reduced image data generated by the resolution converter. To do this, the generator determines whether all non-sampling target pixels in a block of interest are restorable from a sampling target pixel in the block of interest or from sampling target pixels in three blocks adjacent to the block of interest, and generates and outputs three kinds of additional information based on the determination result.
摘要翻译：本发明生成有效的编码数据，以从减少的图像数据恢复原始图像数据。输入单元从原始图像数据输入2×2像素的块数据。 A转换器通过在输入块数据中的预设位置处采样一个像素数据来生成尺寸小于原始图像数据的缩小图像数据。发生器产生编码数据以恢复每个块数据中的三个非采样目标像素数据，以便从分辨率转换器产生的缩小图像数据恢复原始图像数据。为此，发生器确定感兴趣块中的所有非采样目标像素是否可以从感兴趣块中的采样目标像素或与感兴趣块相邻的三个块中的采样目标像素恢复，并且生成并输出基于确定结果的三种附加信息。

9. 发明授权

US08396308B2 Image coding based on interpolation information 有权
标题翻译：基于插值信息的图像编码
公开(公告)号：US08396308B2
公开(公告)日：2013-03-12
申请号：US12620241
申请日：2009-11-17
申请人： Hiroshi Kajiwara , Yuki Shiraishi , Naoki Ito , Hirokazu Tamura
发明人： Hiroshi Kajiwara , Yuki Shiraishi , Naoki Ito , Hirokazu Tamura
IPC分类号： G06K9/36
CPC分类号： H04N19/59 , H04N19/12 , H04N19/14 , H04N19/17 , H04N19/176 , H04N19/46 , H04N19/587 , H04N19/60 , H04N19/70
摘要： Resolution interpolation data is generated by relatively simple processing. This enables image encoding by simple and quick processing to attain high image quality and high compression performance. To do this, a tile divider extracts tile data of 32×32 pixels from encoding target original image data. A resolution converter samples one pixel of a block of 2×2 pixels in the tile data, thereby generating reduced tile data of a reduced image. An interpolation data generator generates interpolation data to be used to generate tile data having the original resolution from the reduced tile data. Based on the interpolation data of a tile of interest, an encoding method selector outputs a control signal indicating which one of lossless encoding and lossy encoding should be executed for the reduced tile data. A code stream generator outputs the generated encoded data and interpolation data as encoded image data.
摘要翻译：通过相对简单的处理生成分辨率插值数据。这使得能够通过简单快速的处理实现图像编码，从而获得高图像质量和高压缩性能。为此，瓦片分割器从编码目标原始图像数据中提取32×32像素的图块数据。分辨率转换器对瓦片数据中的2×2像素的块的一个像素进行采样，从而生成缩小图像的减少的瓦片数据。内插数据生成器生成用于从缩小的瓦片数据生成具有原始分辨率的瓦片数据的内插数据。基于感兴趣的图块的内插数据，编码方法选择器输出指示对于缩小的瓦片数据应当执行哪一个无损编码和有损编码的控制信号。代码流生成器将生成的编码数据和内插数据输出为编码图像数据。

10. 发明申请

US20100124380A1 IMAGE ENCODING APPARATUS AND METHOD OF CONTROLLING THE SAME 有权
标题翻译：图像编码装置及其控制方法
公开(公告)号：US20100124380A1
公开(公告)日：2010-05-20
申请号：US12620194
申请日：2009-11-17
申请人： Yuki Shiraishi , Hiroshi Kajiwara , Naoki Ito , Hirokazu Tamura
发明人： Yuki Shiraishi , Hiroshi Kajiwara , Naoki Ito , Hirokazu Tamura
IPC分类号： G06K9/36 , G06K9/32
CPC分类号： H04N1/41 , H04N19/105 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/70
摘要： This invention generates efficient encoded data to restore original image data from reduced image data. An input unit inputs block data of 2×2 pixels from original image data. A converter generates reduced image data having a size smaller than the original image data by sampling one pixel data at a preset position in the input block data. A generator generates encoded data to restore three non-sampling target pixel data in each block data so as to restore the original image data from the reduced image data generated by the resolution converter. To do this, the generator determines whether all non-sampling target pixels in a block of interest are restorable from a sampling target pixel in the block of interest or from sampling target pixels in three blocks adjacent to the block of interest, and generates and outputs three kinds of additional information based on the determination result.
摘要翻译：本发明生成有效的编码数据，以从减少的图像数据恢复原始图像数据。输入单元从原始图像数据输入2×2像素的块数据。 A转换器通过在输入块数据中的预设位置处采样一个像素数据来生成尺寸小于原始图像数据的缩小图像数据。发生器产生编码数据以恢复每个块数据中的三个非采样目标像素数据，以便从分辨率转换器产生的缩小图像数据恢复原始图像数据。为此，发生器确定感兴趣块中的所有非采样目标像素是否可以从感兴趣块中的采样目标像素或与感兴趣块相邻的三个块中的采样目标像素恢复，并且生成并输出基于确定结果的三种附加信息。

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