公开(公告)号：US20080316355A1

公开(公告)日：2008-12-25

申请号：US12137774

申请日：2008-06-12

申请人： Kohei Fukugawa ,  Kazuhiro Tsujino

发明人： Kohei Fukugawa ,  Kazuhiro Tsujino

IPC分类号： H04N5/235 ,  H04N9/68 ,  H04N5/238

CPC分类号： H04N5/2351 ,  H04N5/2353 ,  H04N2101/00

摘要： A camera includes an image sensor, and a plurality of metering areas are assigned to an object scene captured by the image sensor. A CPU evaluates a luminance of the object scene for each metering area, and binarizes each of the plurality of obtained luminance evaluated values. Furthermore, on the basis of the plurality of binarized luminance evaluated values, a width of a high luminance area included in the object scene is calculated while a width of an adjacent area adjacent to the high luminance area out of a low luminance area included in the object scene is calculated. Then, each of the plurality of luminance evaluated values is corrected on the basis of a ratio between the width of the calculated adjacent area and the width of the calculated high luminance area. An exposure amount to the image sensor is adjusted on the basis of the luminance evaluated values thus corrected.

摘要翻译： 相机包括图像传感器，并且将多个测光区域分配给由图像传感器捕获的对象场景。 CPU对每个计量区域评估对象场景的亮度，并且对所获得的多个亮度评估值中的每一个进行二值化。 此外，基于多个二值化的亮度评估值，计算包括在对象场景中的高亮度区域的宽度，同时包括在低亮度区域中的与高亮度区域相邻的相邻区域的宽度 对象场景被计算。 然后，基于计算出的相邻区域的宽度与计算出的高亮度区域的宽度之间的比率来校正多个亮度评估值中的每一个。 基于由此校正的亮度评估值来调整图像传感器的曝光量。

公开(公告)号：US20090059059A1

公开(公告)日：2009-03-05

申请号：US12197713

申请日：2008-08-25

申请人： Kohei FUKUGAWA ,  Kazuhiro Tsujino

发明人： Kohei FUKUGAWA ,  Kazuhiro Tsujino

IPC分类号： H04N5/232

CPC分类号： H04N5/23212 ,  G03B13/36 ,  H04N5/23219

摘要： An electronic camera includes an image sensor having an imaging surface for capturing an object scene through a focus lens. When the object scene captured by the imaging surface includes a face portion of a human, a CPU designates, as a focal-point search area a first imaging area for covering an outline of the face portion. The CPU also designates, as a frequency-component detection area, a second imaging area that is smaller than the first imaging area and is for capturing an inner side of the outline of the face portion. Subsequently, the CPU obtains a high-frequency AF evaluation value and a mid-frequency AF evaluation value detected corresponding to the frequency-component detection area, and designates, as a lens moving range, a range different depending upon a relative ratio between the high-frequency AF evaluation value and the mid-frequency AF evaluation value. Thereafter, the CPU moves the focus lens within a designated range, and references a partial image generated on the imaging surface in a manner to correspond to the focal-point search area so as to search a focal point for the face portion.

摘要翻译： 电子照相机包括具有用于通过聚焦透镜捕获物体场景的成像表面的图像传感器。 当由成像表面拍摄的对象场景包括人脸部分时，CPU将作为焦点搜索区域的第一成像区域指定为覆盖脸部部分的轮廓的第一成像区域。 作为频率分量检测区域，CPU还将比第一摄像区域小的第二摄像区域指定并捕捉脸部的轮廓的内侧。 随后，CPU获得对应于频率分量检测区域检测到的高频AF评价值和中频AF评估值，并且将作为透镜移动范围的范围指定为根据高分辨率检测区域之间的相对比例而不同的范围 频率AF评估值和中频AF评估值。 此后，CPU将聚焦透镜移动到指定范围内，并且以与焦点搜索区域相对应的方式参考在成像表面上生成的部分图像，以搜索面部的焦点。

公开(公告)号：US08243165B2

公开(公告)日：2012-08-14

申请号：US12612447

申请日：2009-11-04

申请人： Takeshi Fujiwara ,  Kazuhiro Tsujino ,  Kohei Fukugawa

发明人： Takeshi Fujiwara ,  Kazuhiro Tsujino ,  Kohei Fukugawa

IPC分类号： H04N5/243

CPC分类号： H04N5/2351 ,  H04N5/2353 ,  H04N5/2357

摘要： A video camera includes an image sensor. The image sensor repeatedly outputs an object scene image produced on an imaging surface having a plurality of pixels lined up in a vertical direction. A driver repeatedly executes an exposing operation for exposing the imaging surface for each pixel lined up in a vertical direction. A CPU repeatedly detects a plurality of luminance values respectively corresponding to a plurality of flicker evaluation areas allocated to the imaging surface in a manner to be located at positions different from one another in a vertical direction, based on the object scene image outputted from the image sensor. Moreover, the CPU determines the presence or absence of a flicker based on the plurality of luminance values thus detected.

摘要翻译： 摄像机包括图像传感器。 图像传感器重复地输出在具有在垂直方向排列的多个像素的成像表面上产生的对象场景图像。 驾驶员重复执行曝光操作，以暴露在垂直方向排列的每个像素的成像表面。 基于从图像输出的对象场景图像，CPU以与位于彼此不同的位置的方式重复地检测分配给成像表面的多个闪烁评估区域的多个亮度值 传感器。 此外，CPU基于这样检测的多个亮度值来确定是否存在闪烁。

公开(公告)号：US20100141791A1

公开(公告)日：2010-06-10

申请号：US12612447

申请日：2009-11-04

申请人： Takeshi Fujiwara ,  Kazuhiro Tsujino ,  Kohei Fukugawa

发明人： Takeshi Fujiwara ,  Kazuhiro Tsujino ,  Kohei Fukugawa

IPC分类号： H04N9/73 ,  H04N5/00

CPC分类号： H04N5/2351 ,  H04N5/2353 ,  H04N5/2357

摘要： A video camera includes an image sensor. The image sensor repeatedly outputs an object scene image produced on an imaging surface having a plurality of pixels lined up in a vertical direction. A driver repeatedly executes an exposing operation for exposing the imaging surface for each pixel lined up in a vertical direction. A CPU repeatedly detects a plurality of luminance values respectively corresponding to a plurality of flicker evaluation areas allocated to the imaging surface in a manner to be located at positions different from one another in a vertical direction, based on the object scene image outputted from the image sensor. Moreover, the CPU determines the presence or absence of a flicker based on the plurality of luminance values thus detected.

摘要翻译： 摄像机包括图像传感器。 图像传感器重复输出在具有在垂直方向排列的多个像素的成像表面上产生的对象场景图像。 驾驶员重复执行曝光操作，以暴露在垂直方向排列的每个像素的成像表面。 基于从图像输出的对象场景图像，CPU以与位于彼此不同的位置的方式重复地检测分配给成像表面的多个闪烁评估区域的多个亮度值 传感器。 此外，CPU基于这样检测的多个亮度值来确定是否存在闪烁。

公开(公告)号：US08077252B2

公开(公告)日：2011-12-13

申请号：US12197713

申请日：2008-08-25

申请人： Kohei Fukugawa ,  Kazuhiro Tsujino

发明人： Kohei Fukugawa ,  Kazuhiro Tsujino

IPC分类号： H04N5/232 ,  G03B13/00

CPC分类号： H04N5/23212 ,  G03B13/36 ,  H04N5/23219

摘要： An electronic camera includes an image sensor having an imaging surface for capturing an object scene through a focus lens. When the object scene captured by the imaging surface includes a face portion of a human, a CPU designates, as a focal-point search area a first imaging area for covering an outline of the face portion. The CPU also designates, as a frequency-component detection area, a second imaging area that is smaller than the first imaging area and is for capturing an inner side of the outline of the face portion. Subsequently, the CPU obtains a high-frequency AF evaluation value and a mid-frequency AF evaluation value detected corresponding to the frequency-component detection area, and designates, as a lens moving range, a range different depending upon a relative ratio between the high-frequency AF evaluation value and the mid-frequency AF evaluation value. Thereafter, the CPU moves the focus lens within a designated range, and references a partial image generated on the imaging surface in a manner to correspond to the focal-point search area so as to search a focal point for the face portion.

摘要翻译： 电子照相机包括具有用于通过聚焦透镜捕获物体场景的成像表面的图像传感器。 当由成像表面拍摄的对象场景包括人脸部分时，CPU将作为焦点搜索区域的第一成像区域指定为覆盖脸部部分的轮廓的第一成像区域。 作为频率分量检测区域，CPU还将比第一摄像区域小的第二摄像区域指定并捕捉脸部的轮廓的内侧。 随后，CPU获得对应于频率分量检测区域检测到的高频AF评价值和中频AF评估值，并且将作为透镜移动范围的范围指定为根据高分辨率检测区域之间的相对比例而不同的范围 频率AF评估值和中频AF评估值。 此后，CPU将聚焦透镜移动到指定范围内，并且以与焦点搜索区域相对应的方式参考在成像表面上生成的部分图像，以搜索面部的焦点。

公开(公告)号：US08339473B2

公开(公告)日：2012-12-25

申请号：US12501586

申请日：2009-07-13

申请人： Kohei Fukugawa ,  Kazuhiro Tsujino

发明人： Kohei Fukugawa ,  Kazuhiro Tsujino

IPC分类号： H04N9/73 ,  H04N5/228

CPC分类号： H04N5/235 ,  H04N5/23212 ,  H04N5/2357

摘要： A video camera includes an image sensor. The image sensor repeatedly outputs an object scene image captured on an imaging surface. A CPU detects a luminance component of the object scene image outputted from the image sensor, i.e., an AE/AWB evaluation value, and also detects a high-frequency component of the object scene image outputted from the image sensor, i.e., an AF evaluation value. Moreover, the CPU executes a flicker determining process for determining whether or not a flicker is occurred based on the luminance component of the object scene image. However, prior to the flicker determining process, whether or not there is a dynamic object in the object scene is determined based on the high-frequency component of the object scene image. The flicker determining process is prohibited when there is the dynamic object while it is permitted when there is no dynamic object.

摘要翻译： 摄像机包括图像传感器。 图像传感器重复地输出在成像表面上捕获的对象场景图像。 CPU检测从图像传感器输出的对象场景图像的亮度分量，即AE / AWB评价值，并且还检测从图像传感器输出的对象场景图像的高频分量，即AF评价 值。 此外，CPU执行闪烁确定处理，用于基于对象场景图像的亮度分量来确定是否发生闪烁。 然而，在闪烁确定处理之前，基于对象场景图像的高频分量来确定对象场景中是否存在动态对象。 当没有动态对象时允许动态对象时，禁止闪烁确定过程。

公开(公告)号：US08174610B2

公开(公告)日：2012-05-08

申请号：US12137774

申请日：2008-06-12

申请人： Kohei Fukugawa ,  Kazuhiro Tsujino

发明人： Kohei Fukugawa ,  Kazuhiro Tsujino

IPC分类号： H04N5/238

CPC分类号： H04N5/2351 ,  H04N5/2353 ,  H04N2101/00

摘要： A camera includes an image sensor, and a plurality of metering areas are assigned to an object scene captured by the image sensor. A CPU evaluates a luminance of the object scene for each metering area, and binarizes each of the plurality of obtained luminance evaluated values. Furthermore, on the basis of the plurality of binarized luminance evaluated values, a width of a high luminance area included in the object scene is calculated while a width of an adjacent area adjacent to the high luminance area out of a low luminance area included in the object scene is calculated. Then, each of the plurality of luminance evaluated values is corrected on the basis of a ratio between the width of the calculated adjacent area and the width of the calculated high luminance area. An exposure amount to the image sensor is adjusted on the basis of the luminance evaluated values thus corrected.

摘要翻译： 相机包括图像传感器，并且将多个测光区域分配给由图像传感器捕获的对象场景。 CPU对每个计量区域评估对象场景的亮度，并且对所获得的多个亮度评估值中的每一个进行二值化。 此外，基于多个二值化的亮度评估值，计算包括在对象场景中的高亮度区域的宽度，同时包括在低亮度区域中的与高亮度区域相邻的相邻区域的宽度 对象场景被计算。 然后，基于计算出的相邻区域的宽度与计算出的高亮度区域的宽度之间的比率来校正多个亮度评估值中的每一个。 基于由此校正的亮度评估值来调整图像传感器的曝光量。

公开(公告)号：US20100013954A1

公开(公告)日：2010-01-21

申请号：US12501586

申请日：2009-07-13

申请人： Kohei Fukugawa ,  Kazuhiro Tsujino

发明人： Kohei Fukugawa ,  Kazuhiro Tsujino

IPC分类号： H04N9/73

CPC分类号： H04N5/235 ,  H04N5/23212 ,  H04N5/2357

摘要： A video camera includes an image sensor. The image sensor repeatedly outputs an object scene image captured on an imaging surface. A CPU detects a luminance component of the object scene image outputted from the image sensor, i.e., an AE/AWB evaluation value, and also detects a high-frequency component of the object scene image outputted from the image sensor, i.e., an AF evaluation value. Moreover the CPU executes a flicker determining process for determining whether or not a flicker is occurred based on the luminance component of the object scene image. However, prior to the flicker determining process, whether or not there is a dynamic object in the object scene is determined based on the high-frequency component of the object scene image. The flicker determining process is prohibited when there is the dynamic object while it is permitted when there is no dynamic object.

摘要翻译： 摄像机包括图像传感器。 图像传感器重复地输出在成像表面上捕获的对象场景图像。 CPU检测从图像传感器输出的对象场景图像的亮度分量，即AE / AWB评价值，并且还检测从图像传感器输出的对象场景图像的高频分量，即AF评价 值。 此外，CPU执行闪烁确定处理，用于基于对象场景图像的亮度分量来确定是否发生闪烁。 然而，在闪烁确定处理之前，基于对象场景图像的高频分量来确定对象场景中是否存在动态对象。 当没有动态对象时允许动态对象时，禁止闪烁确定过程。

公开(公告)号：US06903776B1

公开(公告)日：2005-06-07

申请号：US09420806

申请日：1999-10-19

申请人： Kazuhiro Tsujino ,  Junya Kaku

发明人： Kazuhiro Tsujino ,  Junya Kaku

IPC分类号： H04N5/238 ,  G03B7/093 ,  G03B19/02 ,  H04N5/235

CPC分类号： H04N5/2353

摘要： A digital camera includes a timing generator. The timing generator reads shutter speed data out of a register in response to a vertical synchronizing signal outputted from a signal generator, and controls exposure by a CCD imager according to this shutter speed data. The data in the register is updated in predetermined timing based on a vertical synchronizing signal. As a result, continuous shots of a subject are performed with different exposures.

摘要翻译： 数码相机包括定时发生器。 定时发生器响应于从信号发生器输出的垂直同步信号从存储器读出快门速度数据，并且根据该快门速度数据控制CCD成像器的曝光。 基于垂直同步信号，在预定定时更新寄存器中的数据。 结果，以不同的曝光进行拍摄对象的连续拍摄。

公开(公告)号：US07420612B2

公开(公告)日：2008-09-02

申请号：US10220288

申请日：2001-03-07

申请人： Kazuhiro Tsujino

发明人： Kazuhiro Tsujino

IPC分类号： H04N5/238 ,  H04N5/225 ,  H04N5/232

CPC分类号： H04N5/23212 ,  H04N5/2353

摘要： A digital camera includes a CCD imager. If brightness of an object is not enough, a frame rate of the CCD imager at a time of a focus adjustment is changed from 30 fps to 15 fps. This also lowers a reading speed of a camera signal, and reduces noise included in the camera signal. An AF evaluation value is acquired by integrating a high frequency component of a Y signal generated on the basis of the camera signal, and therefore, high noise causes an error in the AF evaluation value and fails to correctly adjust focus. This is the reason why the driving speed of the CCD imager is lowered when the brightness of the object is not enough.

摘要翻译： 数码相机包括CCD成像器。 如果物体的亮度不足，则将聚焦调整时的CCD成像器的帧速率从30fps改为15fps。 这也降低了摄像机信号的读取速度，并降低了摄像机信号中包含的噪声。 通过对基于摄像机信号生成的Y信号的高频分量进行积分来获取AF评价值，因此高噪声引起AF评价值的误差，不能正确调整对焦。 这就是当对象的亮度不足时CCD成像器的驱动速度降低的原因。