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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 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。

7. 发明授权

US08983219B2 Image processing apparatus and control method therefor 有权
标题翻译：图像处理装置及其控制方法
公开(公告)号：US08983219B2
公开(公告)日：2015-03-17
申请号：US13362625
申请日：2012-01-31
申请人： Hiroki Kishi , Yuki Shiraishi , Naoki Ito
发明人： Hiroki Kishi , Yuki Shiraishi , Naoki Ito
IPC分类号： G06K9/36 , G06K9/46 , H04N19/40 , H04N19/132 , H04N19/146 , H04N19/18 , H04N19/635
CPC分类号： H04N19/40 , H04N19/132 , H04N19/146 , H04N19/18 , H04N19/635
摘要： An image processing apparatus which re-encodes encoded data, encoded with a pixel block having a predetermined number of pixels as a coding unit, while suppressing degradation of image quality, with a higher compressibility. For this purpose, when an encoded-image-data input unit inputs JPEG encoded data with an 8×8 pixel block as a coding unit, a redundancy estimation unit performs encoding on the encoded data, and sets an encoded data amount obtained by the coding, as a target code amount for a recompressor to perform coding in accordance with JPEG 2000 coding. The inputted encoded data is decompressed by a decompressor, and the recompressor generates encoded data in the previously-determined target code amount. The code amount control is performed by deleting the encoded data in bit planes in an order from a least significant bit plane toward a high-order bit plane.
摘要翻译：一种图像处理装置，其将具有预定数量的像素的像素块编码的编码数据重新编码为编码单元，同时以更高的可压缩性抑制图像质量的劣化。为此，当编码图像数据输入单元输入具有8×8像素块的JPEG编码数据作为编码单位时，冗余度估计单元对编码数据进行编码，并且设定通过编码获得的编码数据量，作为再压缩器根据JPEG2000编码执行编码的目标代码量。输入的编码数据由解压缩器解压缩，并且再压缩器以先前确定的目标代码量生成编码数据。通过以从最低有效位平面朝向高位位平面的顺序删除位平面中的编码数据来执行码量控制。

8. 发明申请

US20120219234A1 IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREFOR 有权
标题翻译：图像处理装置及其控制方法
公开(公告)号：US20120219234A1
公开(公告)日：2012-08-30
申请号：US13362625
申请日：2012-01-31
申请人： Hiroki Kishi , Yuki Shiraishi , Naoki Ito
发明人： Hiroki Kishi , Yuki Shiraishi , Naoki Ito
IPC分类号： G06K9/36
CPC分类号： H04N19/40 , H04N19/132 , H04N19/146 , H04N19/18 , H04N19/635
摘要： An image processing apparatus which re-encodes encoded data, encoded with a pixel block having a predetermined number of pixels as a coding unit, while suppressing degradation of image quality, with a higher compressibility. For this purpose, when an encoded-image-data input unit inputs JPEG encoded data with an 8×8 pixel block as a coding unit, a redundancy estimation unit performs encoding on the encoded data, and sets an encoded data amount obtained by the coding, as a target code amount for a recompressor to perform coding in accordance with JPEG 2000 coding. The inputted encoded data is decompressed by a decompressor, and the recompressor generates encoded data in the previously-determined target code amount. The code amount control is performed by deleting the encoded data in bit planes in an order from a least significant bit plane toward a high-order bit plane.
摘要翻译：一种图像处理装置，其将具有预定数量的像素的像素块编码的编码数据重新编码为编码单元，同时以更高的可压缩性抑制图像质量的劣化。为此，当编码图像数据输入单元输入具有8×8像素块的JPEG编码数据作为编码单位时，冗余度估计单元对编码数据进行编码，并且设定通过编码获得的编码数据量，作为再压缩器根据JPEG2000编码执行编码的目标代码量。输入的编码数据由解压缩器解压缩，并且再压缩器以先前确定的目标代码量生成编码数据。通过以从最低有效位平面朝向高位位平面的顺序删除位平面中的编码数据来执行码量控制。

9. 发明授权

US08224101B2 Image processing apparatus and control method thereof with color data and monochrome data selection 有权
标题翻译：图像处理装置及其控制方法，具有彩色数据和单色数据选择
公开(公告)号：US08224101B2
公开(公告)日：2012-07-17
申请号：US11834890
申请日：2007-08-07
申请人： Hirokazu Tamura , Naoki Ito
发明人： Hirokazu Tamura , Naoki Ito
IPC分类号： G06K9/36
CPC分类号： H04N1/64 , H04N19/12 , H04N19/146 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/59 , H04N19/60
摘要： In this invention, image data expressed by one component is encoded at a high speed by using a color image lossless encoder. To do this, a color conversion unit converts color image data read by a document reading unit into C, M, Y, and K data. In a color reading mode, a switching unit directly outputs the C, M, Y, and K data to an encoding unit. If the reading mode is a monochrome reading mode, the switching unit neglects the C, M, and Y components of the C, M, Y, and K data. Every time four K components are input, the switching unit supplies the four K components to the encoding unit as pseudo data of C, M, Y, and K color components. The encoding unit lossless-encodes the received C, M, Y, and K component data.
摘要翻译：在本发明中，通过使用彩色图像无损编码器，以高速编码由一个分量表示的图像数据。为此，颜色转换单元将由文档读取单元读取的彩色图像数据转换为C，M，Y和K数据。在彩色读取模式中，切换单元直接将C，M，Y和K数据输出到编码单元。如果读取模式是单色读取模式，则切换单元忽略C，M，Y和K数据的C，M和Y分量。每当输入四个K分量时，开关单元将四个K分量作为C，M，Y和K颜色分量的伪数据提供给编码单元。编码单元对所接收的C，M，Y和K分量数据进行无损编码。

10. 发明授权

US07454070B2 Image encoding apparatus and method, computer program, and computer-readable storage medium 失效
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：US07454070B2
公开(公告)日：2008-11-18
申请号：US11220541
申请日：2005-09-08
申请人： Naoki Ito , Hirokazu Tamura
发明人： Naoki Ito , Hirokazu Tamura
IPC分类号： G06K9/36
CPC分类号： H04N19/124 , H04N19/15 , H04N19/192
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, an encoding sequence control unit controls a first encoding unit for lossy (JPEG) encoding, a second encoding unit for lossless (JPEG-LS) encoding, first and second memories, and a re-encoding unit, and stores, in a first memory, encoded data of a target data amount or less that contains both losslessly and lossily encoded data. A correction unit corrects, of encoded data stored in the first memory, encoded data of an isolated type to the type of neighboring encoded data, and outputs the corrected data.
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，编码序列控制单元控制用于有损（JPEG）编码的第一编码单元，用于无损（JPEG-LS）编码的第二编码单元，第一和第二存储器和重新编码单元，并将其存储在第一存储器，包含无损和有损编码数据的目标数据量或更少的编码数据。校正单元将存储在第一存储器中的编码数据校正为隔离类型的编码数据到相邻编码数据的类型，并输出校正数据。

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