公开(公告)号：US07751619B2

公开(公告)日：2010-07-06

申请号：US12264500

申请日：2008-11-04

申请人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

发明人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

IPC分类号： G06K9/00 ,  G06K9/40

CPC分类号： H04N5/243 ,  H04N5/217 ,  H04N5/23296 ,  H04N9/646

摘要： For each pixel read from an imaging device, a horizontal counter value and a vertical counter value corresponding to the pixel are supplied from a signal generator to a distance computation section via an optical-axis-center coordinate setting section and an up-and-down and right-and-left weighting section. In the distance computation section, the distance to the optical-axis center is computed, and correction coefficients for the zoom wide end and for the zoom tele end, which correspond to the distance, are obtained by look-up tables. The two obtained correction coefficients are blended at a mixture ratio determined by a blend ratio setting section. The blended shading correction coefficients are gain adjusted by a gain adjustment section, after which they are supplied to a correction section. As a result, a correction corresponding to the distance to the optical-axis-center position is performed on the signal of each pixel supplied from an imaging section.

摘要翻译： 对于从成像装置读取的每个像素，将与像素相对应的水平计数器值和垂直计数器值经由光轴中心坐标设定部和上下方向从信号发生器供给到距离计算部 和右，右加权部分。 在距离计算部分中，计算到光轴中心的距离，并且通过查找表获得与距离对应的变焦宽端和变焦远端的校正系数。 将两个获得的校正系数以由混合比设置部确定的混合比混合。 混合阴影校正系数是通过增益调整部分调整的增益，之后将它们提供给校正部分。 结果，对从摄像部提供的每个像素的信号执行与光轴中心位置的距离相对应的校正。

公开(公告)号：US07460728B2

公开(公告)日：2008-12-02

申请号：US10921284

申请日：2004-08-19

申请人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

发明人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

IPC分类号： G06K9/40

CPC分类号： H04N5/243 ,  H04N5/217 ,  H04N5/23296 ,  H04N9/646

摘要： For each pixel read from an imaging device, a horizontal counter value and a vertical counter value corresponding to the pixel are supplied from a signal generator to a distance computation section via an optical-axis-center coordinate setting section and an up-and-down and right-and-left weighting section. In the distance computation section, the distance to the optical-axis center is computed, and correction coefficients for the zoom wide end and for the zoom tele end, which correspond to the distance, are obtained by look-up tables. The two obtained correction coefficients are blended at a mixture ratio determined by a blend ratio setting section. The blended shading correction coefficients are gain adjusted by a gain adjustment section, after which they are supplied to a correction section. As a result, a correction corresponding to the distance to the optical-axis-center position is performed on the signal of each pixel supplied from an imaging section.

摘要翻译： 对于从成像装置读取的每个像素，将与像素相对应的水平计数器值和垂直计数器值经由光轴中心坐标设定部和上下方向从信号发生器供给到距离计算部 和右，右加权部分。 在距离计算部分中，计算到光轴中心的距离，并且通过查找表获得与距离对应的变焦宽端和变焦远端的校正系数。 将两个获得的校正系数以由混合比设置部确定的混合比混合。 混合阴影校正系数是通过增益调整部分调整的增益，之后将它们提供给校正部分。 结果，对从摄像部提供的每个像素的信号执行与光轴中心位置的距离相对应的校正。

公开(公告)号：US20050089241A1

公开(公告)日：2005-04-28

申请号：US10921284

申请日：2004-08-19

申请人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

发明人： Isao Kawanishi ,  Miyuki Okada ,  Nobuyuki Sato ,  Ken Nakajima

IPC分类号： G06T1/00 ,  G06T5/00 ,  H04N1/19 ,  H04N1/40 ,  H04N1/409 ,  H04N5/225 ,  H04N5/243 ,  H04N9/07 ,  H04N9/64 ,  H04N101/00

CPC分类号： H04N5/243 ,  H04N5/217 ,  H04N5/23296 ,  H04N9/646

摘要： For each pixel read from an imaging device, a horizontal counter value and a vertical counter value corresponding to the pixel are supplied from a signal generator to a distance computation section via an optical-axis-center coordinate setting section and an up-and-down and right-and-left weighting section. In the distance computation section, the distance to the optical-axis center is computed, and correction coefficients for the zoom wide end and for the zoom tele end, which correspond to the distance, are obtained by look-up tables. The two obtained correction coefficients are blended at a mixture ratio determined by a blend ratio setting section. The blended shading correction coefficients are gain adjusted by a gain adjustment section, after which they are supplied to a correction section. As a result, a correction corresponding to the distance to the optical-axis-center position is performed on the signal of each pixel supplied from an imaging section.

摘要翻译： 对于从成像装置读取的每个像素，将与像素相对应的水平计数器值和垂直计数器值经由光轴中心坐标设定部和上下方向从信号发生器供给到距离计算部 和右，右加权部分。 在距离计算部分中，计算到光轴中心的距离，并且通过查找表获得与距离对应的变焦宽端和变焦远端的校正系数。 将两个获得的校正系数以由混合比设置部确定的混合比混合。 混合阴影校正系数是通过增益调整部分调整的增益，之后将它们提供给校正部分。 结果，对从摄像部提供的每个像素的信号执行与光轴中心位置的距离相对应的校正。

公开(公告)号：US07881543B2

公开(公告)日：2011-02-01

申请号：US11597333

申请日：2005-06-22

申请人： Miyuki Okada ,  Isao Kawanishi ,  Mikiko Hama ,  Takeshi Harano

发明人： Miyuki Okada ,  Isao Kawanishi ,  Mikiko Hama ,  Takeshi Harano

IPC分类号： G06K9/36 ,  G06K9/00 ,  G06K9/40 ,  H04N1/00 ,  H04N7/12 ,  H04N11/02

CPC分类号： H04N19/85 ,  H04N19/115 ,  H04N19/14 ,  H04N19/149 ,  H04N19/48

摘要： A high-frequency integrating circuit 32 detects characteristics of horizontal high-frequency components and vertical high-frequency components of the image formed by a processing-target image signal. Based on the detection result, a CPU 61 obtains the number of bits of the after-compression-coding data of the image signal, and calculates the compression rate dependent upon the number of bits. The CPU 61 controls an image codec 36 so that the processing-target image signal is compression-coded through only one time of compression coding processing by use of the calculated compression rate. This configuration allows the image compression processing (compression coding) to be rapidly executed with high accuracy.

摘要翻译： 高频积分电路32检测由处理对象图像信号形成的图像的水平高频分量和垂直高频分量的特性。 基于检测结果，CPU 61获得图像信号的压缩后编码数据的位数，并且根据比特数来计算压缩率。 CPU61控制图像编解码器36，使得处理对象图像信号仅通过使用计算的压缩率的压缩编码处理的一次进行压缩编码。 该配置允许以高精度快速执行图像压缩处理（压缩编码）。

公开(公告)号：US20070110328A1

公开(公告)日：2007-05-17

申请号：US11597333

申请日：2005-06-22

申请人： Miyuki Okada ,  Isao Kawanishi ,  Mikiko Hama ,  Takeshi Harano

发明人： Miyuki Okada ,  Isao Kawanishi ,  Mikiko Hama ,  Takeshi Harano

IPC分类号： G06K9/00 ,  G06K9/36

CPC分类号： H04N19/85 ,  H04N19/115 ,  H04N19/14 ,  H04N19/149 ,  H04N19/48

摘要： A high-frequency integrating circuit 32 detects characteristics of horizontal high-frequency components and vertical high-frequency components of the image formed by a processing-target image signal. Based on the detection result, a CPU 61 obtains the number of bits of the after-compression-coding data of the image signal, and calculates the compression rate dependent upon the number of bits. The CPU 61 controls an image codec 36 so that the processing-target image signal is compression-coded through only one time of compression coding processing by use of the calculated compression rate. This configuration allows the image compression processing (compression coding) to be rapidly executed with high accuracy.

摘要翻译： 高频积分电路32检测由处理对象图像信号形成的图像的水平高频分量和垂直高频分量的特性。 基于检测结果，CPU 61获得图像信号的压缩后编码数据的位数，并且根据比特数来计算压缩率。 CPU61控制图像编解码器36，使得处理对象图像信号仅通过使用计算的压缩率的压缩编码处理的一次进行压缩编码。 该配置允许以高精度快速执行图像压缩处理（压缩编码）。

公开(公告)号：US20050264661A1

公开(公告)日：2005-12-01

申请号：US10517025

申请日：2003-06-09

申请人： Isao Kawanishi ,  Ken Nakajima

发明人： Isao Kawanishi ,  Ken Nakajima

IPC分类号： H04N5/235 ,  H04N5/335 ,  H04N5/353 ,  H04N5/359 ,  H04N5/369 ,  H04N5/372 ,  H04N9/04 ,  H04N9/64

CPC分类号： H04N5/3595 ,  H04N5/2352 ,  H04N9/045

摘要： The automatic exposure adjustment control that is not affected by the smear is obtained in an image pick-up device control system of an electronic shutter, a lens aperture and an automatic gain control, without performing measures against a change of the dark electric-current of vertical OP, the behavior of the dark noise and defective pixels of vertical OP, and a smear amount is calculated precisely even if the weak smear phenomenon which does not reach a saturation level occurs. Therefore, when the smear is detected, the first electronic shutter speed and the first lens aperture value are measured and the first color information integral values of red, green and blue are measured respectively in a predetermined color measurement area of an effective pixel region of an image pick-up unit and the electronic shutter speed is slowed to a predetermined amount to become the same exposure amount as the exposure amount at the first electronic shutter speed and the first lens aperture value, and the lens aperture is narrowed only to that amount, to measure the second color information integral values of the red, green and blue in the color measurement area, and the smear amount is calculated from the color integral values of the red, green and blue.

摘要翻译： 在电子快门，透镜孔径和自动增益控制的图像拾取装置控制系统中获得不受拖影影响的自动曝光调节控制，而不对黑暗电流的变化进行措施 即使发生不达到饱和水平的弱涂片现象，也能精确地计算出垂直OP的暗噪声和垂直OP的缺陷像素的行为以及拖尾量。 因此，当检测到涂片时，测量第一电子快门速度和第一透镜光圈值，并且在一个有效像素区域的预定颜色测量区域中分别测量红色，绿色和蓝色的第一颜色信息积分值 摄像单元和电子快门速度被放慢到预定量，以变成与第一电子快门速度和第一透镜光圈值下的曝光量相同的曝光量，并且透镜孔径仅变窄到该量， 测量颜色测量区域中的红色，绿色和蓝色的第二颜色信息积分值，并根据红色，绿色和蓝色的颜色积分值计算涂片量。

公开(公告)号：US20050018907A1

公开(公告)日：2005-01-27

申请号：US10468981

申请日：2002-12-10

申请人： Isao Kawanishi ,  Tomohiko Naruse ,  Ken Nakajima

发明人： Isao Kawanishi ,  Tomohiko Naruse ,  Ken Nakajima

IPC分类号： H04N5/91 ,  G06T9/00 ,  H04N1/41 ,  H04N5/77 ,  H04N5/907 ,  H04N9/804 ,  H04N9/82 ,  H04N19/126 ,  H04N19/136 ,  H04N19/14 ,  H04N19/146 ,  H04N19/426 ,  H04N19/59 ,  H04N19/60 ,  H04N19/625 ,  H04N19/85 ,  G06K9/36

CPC分类号： H04N5/772 ,  H04N5/907 ,  H04N9/8047 ,  H04N9/8227 ,  H04N19/115 ,  H04N19/117 ,  H04N19/124 ,  H04N19/136 ,  H04N19/149 ,  H04N19/15 ,  H04N19/162 ,  H04N19/176 ,  H04N19/59 ,  H04N19/60 ,  H04N19/80 ,  H04N2101/00 ,  H04N2201/33357

摘要： The present invention relates to an image capturing apparatus and method in which the image recording time is reduced and the memory capacity required for compression is also reduced. A number-of-bytes calculation unit 302 determines the number of bytes after compression based on an integrated value of high-frequency integrated data supplied from a high-frequency integration processor. Based on the determined number of bytes, a Q-scale calculation unit 303 determines a Q-scale based on which the image data can be compressed one time to a predetermined data size. A Q-table generation unit 304 generates a Q-table based on the Q-scale. A DCT unit 321 performs a discrete cosine transform on the input image data. A quantization processor 322 adjusts the compression ratio of the image data based on the up-to-date Q-table supplied from the Q-table generation unit 304. A variable-length coding processor 323 encodes the image data with variable length coding such as Huffman coding, and outputs the resulting compressed image data. The present invention is applicable to digital cameras.

摘要翻译： 本发明涉及图像记录时间缩短并且压缩所需的存储容量也降低的图像捕获装置和方法。 字节数计算单元302基于从高频积分处理器提供的高频综合数据的积分值来确定压缩后的字节数。 基于所确定的字节数，Q尺度计算单元303根据其可以将图像数据压缩一次到预定数据大小来确定Q标度。 Q表生成单元304基于Q量表生成Q表。 DCT单元321对输入图像数据执行离散余弦变换。 量化处理器322基于从Q表生成单元304提供的最新Q表来调整图像数据的压缩比。可变长度编码处理器323对具有可变长度编码的图像数据进行编码，例如 霍夫曼编码，并输出所得到的压缩图像数据。 本发明适用于数码相机。

公开(公告)号：US07358993B2

公开(公告)日：2008-04-15

申请号：US10517025

申请日：2003-06-09

申请人： Isao Kawanishi ,  Ken Nakajima

发明人： Isao Kawanishi ,  Ken Nakajima

IPC分类号： H04N9/64

CPC分类号： H04N5/3595 ,  H04N5/2352 ,  H04N9/045

摘要： Automatic exposure adjustment control that is not affected by smear. An image pick-up device control system of an electronic shutter, a lens aperture and an automatic gain control. Smear amount is calculated precisely even if weak smear phenomenon does not reach a saturation level. When smear is detected, a first electronic shutter speed and a first lens aperture value are measured and first color information integral values of red, green and blue are measured in a predetermined color measurement area of an effective pixel region of an image pick-up unit. The electronic shutter speed is slowed to a predetermined amount to provide the same exposure as the exposure at the first electronic shutter speed and first lens aperture, and the lens aperture is narrowed only to that amount to measure the second color information integral values of the red, green and blue in the color measurement area. The smear amount is calculated from the color integral values of the red, green and blue.

摘要翻译： 自动曝光调整控制，不受涂片影响。 电子快门的摄像装置控制系统，透镜孔径和自动增益控制。 涂抹量即使在弱涂片现象未达到饱和水平时也能精确计算。 当检测到污迹时，测量第一电子快门速度和第一透镜孔径值，并且在图像拾取单元的有效像素区域的预定颜色测量区域中测量红色，绿色和蓝色的第一颜色信息积分值 。 电子快门速度减慢到预定的量以提供与第一电子快门速度和第一透镜孔径处的曝光相同的曝光，并且透镜孔径仅变窄到该量，以测量红色的第二颜色信息积分值 ，绿色和蓝色在颜色测量区域。 涂抹量根据红色，绿色和蓝色的颜色积分值计算。

公开(公告)号：US20090009659A1

公开(公告)日：2009-01-08

申请号：US12185386

申请日：2008-08-04

申请人： Isao Kawanishi ,  Tomohiko Naruse ,  Ken Nakajima

发明人： Isao Kawanishi ,  Tomohiko Naruse ,  Ken Nakajima

IPC分类号： H04N11/02 ,  G06K9/36

CPC分类号： H04N5/772 ,  H04N5/907 ,  H04N9/8047 ,  H04N9/8227 ,  H04N19/115 ,  H04N19/117 ,  H04N19/124 ,  H04N19/136 ,  H04N19/149 ,  H04N19/15 ,  H04N19/162 ,  H04N19/176 ,  H04N19/59 ,  H04N19/60 ,  H04N19/80 ,  H04N2101/00 ,  H04N2201/33357

摘要： The present invention relates to an image capturing apparatus and method in which the image recording time is reduced and the memory capacity required for compression is also reduced. A number-of-bytes calculation unit 302 determines the number of bytes after compression based on an integrated value of high-frequency integrated data supplied from a high-frequency integration processor. Based on the determined number of bytes, a Q-scale calculation unit 303 determines a Q-scale based on which the image data can be compressed one time to a predetermined data size. A Q-table generation unit 304 generates a Q-table based on the Q-scale. A DCT unit 321 performs a discrete cosine transform on the input image data. A quantization processor 322 adjusts the compression ratio of the image data based on the up-to-date Q-table supplied from the Q-table generation unit 304. A variable-length coding processor 323 encodes the image data with variable length coding such as Huffman coding, and outputs the resulting compressed image data. The present invention is applicable to digital cameras.

摘要翻译： 本发明涉及图像记录时间缩短并且压缩所需的存储容量也降低的图像捕获装置和方法。 字节数计算单元302基于从高频积分处理器提供的高频综合数据的积分值来确定压缩后的字节数。 基于所确定的字节数，Q尺度计算单元303根据其可以将图像数据压缩一次到预定数据大小来确定Q标度。 Q表生成单元304基于Q量表生成Q表。 DCT单元321对输入图像数据执行离散余弦变换。 量化处理器322基于从Q表生成单元304提供的最新Q表来调整图像数据的压缩比。可变长度编码处理器323对具有可变长度编码的图像数据进行编码，例如 霍夫曼编码，并输出所得到的压缩图像数据。 本发明适用于数码相机。

公开(公告)号：US07433531B2

公开(公告)日：2008-10-07

申请号：US10468981

申请日：2002-12-10

申请人： Isao Kawanishi ,  Tomohiko Naruse ,  Ken Nakajima

发明人： Isao Kawanishi ,  Tomohiko Naruse ,  Ken Nakajima

IPC分类号： G06K9/36 ,  G06K9/38 ,  G06K9/46 ,  H04N1/41

CPC分类号： H04N5/772 ,  H04N5/907 ,  H04N9/8047 ,  H04N9/8227 ,  H04N19/115 ,  H04N19/117 ,  H04N19/124 ,  H04N19/136 ,  H04N19/149 ,  H04N19/15 ,  H04N19/162 ,  H04N19/176 ,  H04N19/59 ,  H04N19/60 ,  H04N19/80 ,  H04N2101/00 ,  H04N2201/33357

摘要： The present invention relates to an image capturing apparatus and method in which the image recording time is reduced and the memory capacity required for compression is also reduced. A number-of-bytes calculation unit 302 determines the number of bytes after compression based on an integrated value of high-frequency integrated data supplied from a high-frequency integration processor. Based on the determined number of bytes, a Q-scale calculation unit 303 determines a Q-scale based on which the image data can be compressed one time to a predetermined data size. A Q-table generation unit 304 generates a Q-table based on the Q-scale. A DCT unit 321 performs a discrete cosine transform on the input image data. A quantization processor 322 adjusts the compression ratio of the image data based on the up-to-date Q-table supplied from the Q-table generation unit 304. A variable-length coding processor 323 encodes the image data with variable length coding such as Huffman coding, and outputs the resulting compressed image data. The present invention is applicable to digital cameras.

摘要翻译： 本发明涉及图像记录时间缩短并且压缩所需的存储容量也降低的图像捕获装置和方法。 字节数计算单元302基于从高频积分处理器提供的高频综合数据的积分值来确定压缩后的字节数。 基于所确定的字节数，Q尺度计算单元303根据其可以将图像数据压缩一次到预定数据大小来确定Q标度。 Q表生成单元304基于Q量表生成Q表。 DCT单元321对输入图像数据执行离散余弦变换。 量化处理器322基于从Q表生成单元304提供的最新的Q表来调整图像数据的压缩比。 可变长度编码处理器323对诸如霍夫曼编码之类的可变长度编码的图像数据进行编码，并输出所得到的压缩图像数据。 本发明适用于数码相机。