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公开(公告)号：US08203643B2
公开(公告)日：2012-06-19
申请号：US12207623
申请日：2008-09-10
CPC分类号： G03B13/36 , H04N5/23212 , H04N5/3532
摘要： An automatic focusing device in accordance with the present invention comprises an image sensor being subjected to exposure performed in a rolling shutter system, a focusing system including a focus lens for focusing on the image sensor, an AF evaluation value calculating unit calculating an AF evaluation value based on an imaging signal obtained from the image sensor, and an AF control unit controlling an operation of the focusing system based on an AF evaluation value of a focusing area set in a part of the imaging picture by the image sensor, and the AF control unit makes the AF evaluation value of a focusing area of each imaging picture and a focus lens position at the time of exposure for the focusing area correspond to each other, and drives the focusing system during the period which overlaps with an exposure period while searching the focus lens position where the AF evaluation value becomes maximum.
摘要翻译： 根据本发明的自动对焦装置包括在卷帘快门系统中进行曝光的图像传感器，包括用于聚焦在图像传感器上的聚焦透镜的聚焦系统，AF评估值计算单元，其计算AF评价值 基于从图像传感器获得的成像信号，以及AF控制单元，其基于由图像传感器设置在摄像图像的一部分中的聚焦区域的AF评估值来控制聚焦系统的操作，并且AF控制 单元使得各个成像图像的聚焦区域的AF评估值和聚焦区域的曝光时的对焦透镜位置彼此对应，并且在与曝光周期重叠的时段期间驱动聚焦系统，同时搜索 AF评估值变为最大的对焦透镜位置。
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公开(公告)号：US08243165B2
公开(公告)日：2012-08-14
申请号：US12612447
申请日：2009-11-04
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。
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公开(公告)号：US20100141791A1
公开(公告)日：2010-06-10
申请号：US12612447
申请日：2009-11-04
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。
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公开(公告)号：US08169502B2
公开(公告)日：2012-05-01
申请号：US12198408
申请日：2008-08-26
申请人： Takeshi Fujiwara , Kazuhiro Tsujino
发明人： Takeshi Fujiwara , Kazuhiro Tsujino
IPC分类号： H04N9/73
CPC分类号： H04N9/735 , H04N5/235 , H04N5/2357
摘要： An image sensor has an imaging surface irradiated with an optical image of an object scene, and repeatedly generates an object scene image. A CPU repeatedly determines whether or not a specific variation exceeding a reference is generated in the object scene captured by the image sensor, in parallel with a generating process of the object scene image by the image sensor. When a determination result is updated from a negative result to an affirmative result, the CPU waits for an elapse of a designated period, then, determines presence or absence of a generation of a flicker, and executes a flicker countermeasure process, as needed.
摘要翻译： 图像传感器具有用物体场景的光学图像照射的成像表面，并且重复地生成对象场景图像。 与图像传感器的对象场景图像的生成处理并行地，CPU重复地确定在图像传感器拍摄的对象场景中是否生成超过参考的特定变化。 当确定结果从否定结果更新为肯定结果时，CPU等待指定周期的经过，然后确定闪烁的产生的存在或不存在，并且根据需要执行闪烁对策处理。
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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。
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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
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。
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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
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。
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公开(公告)号：US20070035778A1
公开(公告)日：2007-02-15
申请号：US11500428
申请日：2006-08-08
IPC分类号： H04N1/23
CPC分类号： H04N1/23 , H04N1/2112
摘要： An electronic camera includes an imaging device. The imaging device carries out an exposing operation for exposing an object scene and an amplifying operation for amplifying a raw image signal generated by the exposing operation, according to a set imaging parameter. A CPU selects one program chart satisfying a parameter condition, from a plurality of program charts stored in a flash memory, and extracts three imaging parameters from the selected program chart. The extracted imaging parameters are set to the imaging device. The imaging parameter here includes exposure time, amount of aperture, and AGC gain as parameter elements. In addition, the parameter condition includes an AGC gain condition in that each of three AGC gains defining respectively the three imaging parameters is equal to or less than a predetermined value and an exposure time condition in that three exposure times defining respectively the three imaging parameters are shorter.
摘要翻译： 电子照相机包括成像装置。 成像装置根据设定的成像参数进行用于曝光对象场景的曝光操作和用于放大由曝光操作产生的原始图像信号的放大操作。 CPU从存储在闪速存储器中的多个程序图中选择满足参数条件的一个程序图，并从所选择的程序图中提取三个成像参数。 提取的成像参数被设置到成像装置。 这里的成像参数包括曝光时间，光圈量和AGC增益作为参数元素。 此外，参数条件包括AGC增益条件，其中分别定义三个成像参数的三个AGC增益中的每一个等于或小于预定值，并且曝光时间条件分别为三个成像参数中定义的三个曝光时间 较短
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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
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。
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10.发明授权Electronic camera that adjusts the distance from an optical lens to an imaging surface 失效调整从光学透镜到成像表面的距离的电子照相机公开(公告)号：US08237850B2
公开(公告)日：2012-08-07
申请号：US12198319
申请日：2008-08-26
CPC分类号： H04N5/23212
摘要： An electronic camera includes an image sensor. The image sensor has an imaging surface irradiated with an optical image of an object scene through a focus lens and repeatedly generates an object scene image. A CPU executes an AF process for adjusting a distance from the focus lens to the imaging surface to a distance corresponding to a focal point, based on the object scene image generated by the image sensor. However, the CPU has a high-luminance excluding function for excluding from a target to be noticed of the AF process a partial image having a luminance exceeding “TH1” out of the object scene image generated by the image sensor. The CPU determines whether or not a partial image having a luminance exceeding “TH2” larger than “TH1” exists on the object scene image generated by the image sensor, and turns on the high-luminance excluding function when a determination result is affirmative and turns off the high-luminance excluding function when the determination result is negative.
摘要翻译： 电子照相机包括图像传感器。 图像传感器具有通过聚焦透镜照射物体场景的光学图像的成像表面并且重复地生成对象场景图像。 基于由图像传感器生成的对象场景图像，CPU执行AF处理，用于将从聚焦透镜到成像表面的距离调整到与焦点对应的距离。 然而，CPU具有高亮度排除功能，用于从AF图像传感器产生的对象场景图像中具有超过“TH1”的亮度的部分图像从AF处理中排除。 CPU确定在由图像传感器生成的对象场景图像上是否存在亮度超过“TH2”的亮度超过“TH1”的部分图像，并且当确定结果为肯定时打开高亮度排除功能，并且转动 当确定结果为负时，关闭高亮度排除功能。
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