公开(公告)号：US06744476B1

公开(公告)日：2004-06-01

申请号：US09589240

申请日：2000-06-07

申请人： Masaki Kobayashi ,  Makoto Sube

发明人： Masaki Kobayashi ,  Makoto Sube

IPC分类号： H04N5907

CPC分类号： H04N7/0135 ,  G11C19/282 ,  H04N5/14 ,  H04N5/23248 ,  H04N5/907 ,  H04N9/64

摘要： Imaging apparatus having a video memory function includes a video memory having a plurality of read ports and a capacity of storing images in two fields or more, wherein CCD storage sensitivity enhancement means is connected to a write port; a write control circuit for storing a single-field image in each memory area provided by dividing the storage space of the video memory into a plurality of sub-spaces; a plurality of read control sections for reading a single-field image stored in each memory area; and memory control means for reading an image from the video memory by a delay amount corresponding to the timing of a synchronization signal from the CCD storage sensitivity enhancement means. This configuration allows adjustment of the delay amount and prevents an image write address from passing by an image read address so that image data given CCD storage sensitivity enhancement is processed normally.

摘要翻译： 具有视频存储功能的成像设备包括：具有多个读取端口的视频存储器和存储两个或更多场景图像的能力，其中CCD存储灵敏度增强装置连接到写入端口; 写入控制电路，用于将通过将视频存储器的存储空间分割成多个子空间而提供的每个存储区域中的单场图像存储; 多个读取控制部分，用于读取存储在每个存储区域中的单场图像; 以及存储器控制装置，用于从来自CCD存储灵敏度增强装置的与同步信号的定时相对应的延迟量从视频存储器读取图像。 该配置允许调整延迟量并且防止图像写入地址通过图像读取地址，使得给定CCD存储灵敏度增强的图像数据被正常处理。

公开(公告)号：US06750907B1

公开(公告)日：2004-06-15

申请号：US09497127

申请日：2000-02-03

申请人： Makoto Sube

发明人： Makoto Sube

IPC分类号： H04N5235

CPC分类号： H04N5/243

摘要： Low illuminance shooting is achieved by raising the gain or sensitivity through noise reduction while mitigating the deterioration in resolution. An image signal that has been imaged by CCD and amplified CDS is converted into a series of digital pixel values. A weighted moving average of a current pixel value and pixel values of at least two pixels spatially adjacent to the pixel of the current pixel value are calculated. The weighted moving average is divided by a division factor smaller than the sum of weights used in the weighted moving average calculation. If the image signal is smaller than a predetermined value, a selector supplies the divided weighted moving average as the current pixel value to the next stage. This enables not only a gain increase due to noise reduction but also a mitigation of the deterioration in resolution.

摘要翻译： 通过降低噪音降低增益或提高灵敏度，同时降低分辨率的降低，实现低照度拍摄。 已经通过CCD和放大的CDS成像的图像信号被转换成一系列数字像素值。 计算当前像素值的加权移动平均值和与当前像素值的像素空间上相邻的至少两个像素的像素值。 加权移动平均值除以小于加权移动平均计算中使用的权重之和的除数。 如果图像信号小于预定值，则选择器将分配的加权移动平均值作为当前像素值提供给下一级。 这不仅使得由于降噪引起的增益增加，而且还降低了分辨率的劣化。

公开(公告)号：US20090232395A1

公开(公告)日：2009-09-17

申请号：US12097962

申请日：2007-03-06

申请人： Kazunori Sumiya ,  Manabu Yata ,  Taro Hizume ,  Makoto Sube ,  Masayuki Serizawa ,  Takeshi Nakajima ,  Hideki Iwata

发明人： Kazunori Sumiya ,  Manabu Yata ,  Taro Hizume ,  Makoto Sube ,  Masayuki Serizawa ,  Takeshi Nakajima ,  Hideki Iwata

IPC分类号： G06K9/40 ,  H04N5/225

CPC分类号： H04N9/07 ,  H04N5/208 ,  H04N9/045 ,  H04N9/646

摘要： An image signal inputted from an image signal input unit (10) is passed through LPFs (14 and 16) having different frequency response characteristics to remove a color signal component. A feature value calculator (20) calculates an edge value, saturation, and hue from pixels surrounding a target pixel, and a weighting coefficient calculator (22) determines a weighting coefficient k from the feature values calculated by the feature value calculator (20) and from the amounts of changes therein. According to weighting coefficient k calculated by the weighting coefficient calculator (22), a weighted adder (24) performs weighted addition in such a way that it uses a greater amount of a signal of the LPF (14), which passes high-frequency components, for an achromatic color area or even for a chromatic color area if the area has little saturation and change in hue; and that it uses a greater amount of a signal of the LPF (16), which causes little aliasing, for a chromatic color area with some saturation and change in hue. A horizontal contour correction unit (26) receives an output signal of the weighted adder (24) and generates a horizontal contour correction signal. Consequently, a high-quality image having high resolution and little aliasing can be obtained with the scale of the circuit being limited.

摘要翻译： 从图像信号输入单元（10）输入的图像信号通过具有不同频率响应特性的LPF（14和16）以去除颜色信号分量。 特征值计算器（20）从目标像素周围的像素计算边缘值，饱和度和色调，加权系数计算器（22）根据由特征量计算器（20）计算出的特征量和 从其中的变化量。 根据由加权系数计算器（22）计算的加权系数k，加权加法器（24）以这样一种方式进行加权相加，使得它使用更大量的LPF（14）的信号，LPF（14）的信号通过高频分量 对于无色区域，或者如果该区域几乎没有饱和度并且色调改变，则为彩色区域; 并且对于具有一些饱和度和色相改变的彩色区域，其使用更大量的LPF（16）的信号，这导致很少的混叠。 水平轮廓校正单元（26）接收加权加法器（24）的输出信号，并产生水平轮廓校正信号。 因此，由于限制了电路规模，所以可以获得高分辨率和少量混叠的高质量图像。

公开(公告)号：US06710818B1

公开(公告)日：2004-03-23

申请号：US09680216

申请日：2000-10-06

申请人： Misa Kasahara ,  Kenji Tabei ,  Makoto Sube

发明人： Misa Kasahara ,  Kenji Tabei ,  Makoto Sube

IPC分类号： H04N521

CPC分类号： H04N5/2357 ,  H04N5/235

摘要： A video signal including illumination flicker component is integrated at each of unit areas (horizontal lines) in a frame (field) of the video signal. The integrated level at each of the unit areas at the frame and the integrated level at the corresponding unit area of an adjacent frame are averaged. Dividing is effected between results of the averaging and integrating every unit area. It is judged whether flicker exists in the video signal by frequency-analyzing results of the dividing result at the unit areas. The unit area may be plural adjacent lines where flickering are negligible. The averaging circuit may be circulation type of or FIR filter. Threshold level for judging the flicker is changed according to a shutter speed control signal. Flicker compensation may be executed by controlling shutter speed or the AGC according to flicker judging result. A still condition at a block in a frame may be detected from the integration result at plural frames. When the block is judged to be still, the flicker is judged. An ac line frequency detection is also disclosed to detect the frequency of the ac line from a video signal generated under illumination including flicker. An imaging circuit may be provided to generate the video signal therein.

摘要翻译： 包括照明闪烁分量的视频信号被集成在视频信号的帧（场）中的每个单位区域（水平行）处。 在帧的每个单位区域和相邻帧的相应单位区域处的积分水平的积分水平被平均。 在每个单位面积的平均和积分结果之间进行分割。 通过频率分析在单位区域的分割结果的结果来判断视频信号中是否存在闪烁。 单位面积可以是多个相邻的线，其中闪烁是可忽略的。 平均电路可以是循环型或FIR滤波器。 用于判断闪烁的阈值水平根据快门速度控制信号而改变。 可以通过根据闪烁判断结果控制快门速度或AGC来执行闪烁补偿。 可以从多个帧的积分结果检测帧中的块处的静止条件。 当判断为静止时，判断闪烁。 还公开了一种交流线路频率检测，以从包括闪烁在内的照明下产生的视频信号检测交流线路的频率。 可以提供成像电路以在其中产生视​​频信号。

公开(公告)号：US5280359A

公开(公告)日：1994-01-18

申请号：US856648

申请日：1992-03-24

申请人： Hidetoshi Mimura ,  Haruo Kogane ,  Makoto Sube

发明人： Hidetoshi Mimura ,  Haruo Kogane ,  Makoto Sube

IPC分类号： H04N5/232 ,  H04N5/235 ,  H04N5/238 ,  H04N5/30

CPC分类号： H04N5/2351 ,  H04N5/23293 ,  H04N5/238

摘要： A video camera specifies as a photometric area any block of a field of image to be picked up and picks up a subject to be seen by optimizing the amount of light regardless of the position where a television camera is located. The video camera comprises a solid-state image pick-up element (CCD), a display device and devices for controlling the diaphragm of a lens. In operation, the image picked up by the solid-state image pick-up element is divided into plural blocks to be displayed. Any block of these plural blocks can be specified as a photometric area. The amount of light for the photometric area is calculated and the diaphragm of the lens is controlled so that the subject can be seen by optimizing amount of light.

摘要翻译： 视频摄像机指定要拍摄的图像场的任何块的光度区域，并且无论电视摄像机所处的位置如何，通过优化光量来拾取要被看到的被摄体。 该摄像机包括固态图像拾取元件（CCD），显示装置和用于控制透镜的光阑的装置。 在操作中，由固态图像拾取元件拾取的图像被划分为要显示的多个块。 可以将这些多个块的任何块指定为测光区域。 计算用于测光面积的光量，并且控制透镜的光阑，使得通过优化光量可以看到被摄体。

公开(公告)号：US07053946B2

公开(公告)日：2006-05-30

申请号：US10091406

申请日：2002-03-07

申请人： Yuichiro Takahashi ,  Makoto Sube

发明人： Yuichiro Takahashi ,  Makoto Sube

IPC分类号： H04N3/14 ,  H04N5/335

CPC分类号： H04N5/235 ,  H04N7/012

摘要： An inventive video camera imager supports an interlace scan mode, a dynamic range-widening scan (WS) mode and a sequential scan mode with a limited amount of circuitry. For this, a WS image signal of 2N lines and a sequential scan image signal of 2N lines (N is the number of scan lines of an image to be obtained) is used. Every other line of WS image signal is longer in exposure time than adjacent lines of the WS image signal. A simplified imager may support only interlace scan mode and sequential scan mode, or may support only WS mode and sequential scan mode.

摘要翻译： 本发明的摄像机成像器支持隔行扫描模式，动态范围扩大扫描（WS）模式和具有有限量的电路的顺序扫描模式。 为此，使用2N行的WS图像信号和2N行的顺序扫描图像信号（N是要获得的图像的扫描线的数量）。 WS图像信号的每隔一行在曝光时间比WS图像信号的相邻行更长。 简化的成像器可以仅支持隔行扫描模式和顺序扫描模式，或者可以仅支持WS模式和顺序扫描模式。

公开(公告)号：US06972800B2

公开(公告)日：2005-12-06

申请号：US09759257

申请日：2001-01-16

申请人： Toshiyuki Sano ,  Makoto Sube ,  Masayuki Kamiya

发明人： Toshiyuki Sano ,  Makoto Sube ,  Masayuki Kamiya

IPC分类号： H04N5/235 ,  H04N5/243 ,  H04N5/335 ,  H04N5/355 ,  H04N5/378

CPC分类号： H04N5/243 ,  H04N5/235

摘要： A period for a long-term exposure signal is discriminated from a period for a short-term exposure signal. Based on a discrimination signal, an AGC gain selector switches a set value for the gain and a knee point selector switches a set value for the knee point, thereby independently controlling the gain and the knee point for each of the long-term exposure signal and the short-term exposure signal.

摘要翻译： 用于长期曝光信号的周期与短期曝光信号的周期进行区分。 基于判别信号，AGC增益选择器切换增益的设定值，拐点选择器切换拐点的设定值，从而独立地控制长期曝光信号中的每一个的增益和拐点，以及 短期曝光信号。

公开(公告)号：US06760067B1

公开(公告)日：2004-07-06

申请号：US09644844

申请日：2000-08-24

申请人： Toshiyuki Sano ,  Makoto Sube

发明人： Toshiyuki Sano ,  Makoto Sube

IPC分类号： H04N314

CPC分类号： H04N5/217

摘要： An imaging apparatus includes a CCD for accumulating an image signal by an n-times long-time-accumulation (n is an integer of “1” or more); a timing control circuit for controlling to read out the image signal accumulated in the CCD according to the n-times long-time-accumulation; a memory for storing the read-out image signal for one frame period or more; and a recursive noise reduction circuit for performing a noise reduction process on the basis of the image signal read out from the CCD and the one-frame-period-or-more delayed image signal read out from the memory. In case of the 2n-times long-time-accumulation, in a vertical scanning period in which the image signal is output from the CCD, the image signal from the recursive noise reduction circuit is written to the memory. On the other hand, in a vertical scanning period in which the image signal is not output from the CCD, the writing of the image signal generated by the recursive noise reduction circuit to the memory is inhibited, and the image signal is output as an output signal as it is.

摘要翻译： 一种成像装置包括用于通过n次长时间累积（n为“1”以上的整数）累积图像信号的CCD。 定时控制电路，用于根据n次长时间累加来读出累积在CCD中的图像信号; 存储器，用于存储所读出的图像信号一帧或更长时间; 以及用于基于从CCD读出的图像信号和从存储器读出的一帧周期或更多延迟的图像信号执行降噪处理的递归噪声降低电路。 在2n倍长时间累积的情况下，在从CCD输出图像信号的垂直扫描期间，将来自递归降噪电路的图像信号写入存储器。 另一方面，在不从CCD输出图像信号的垂直扫描期间，禁止将由递归噪声降低电路生成的图像信号写入存储器，并将图像信号作为输出输出 信号就是这样。

公开(公告)号：US20060177148A1

公开(公告)日：2006-08-10

申请号：US10544430

申请日：2004-02-05

申请人： Kazunori Sumiya ,  Manabu Yata ,  Tarou Hizume ,  Makoto Sube

发明人： Kazunori Sumiya ,  Manabu Yata ,  Tarou Hizume ,  Makoto Sube

IPC分类号： G06K9/40 ,  H04N5/235

CPC分类号： H04N5/35536 ,  H04N5/235 ,  H04N5/2355 ,  H04N5/353 ,  H04N5/35509

摘要： The present invention provides an image processing apparatus, comprising: an image signal inputting unit 11 for inputting a plurality of image signals different from one another in exposure time, first and second level converting factor calculating units 12, 13 for calculating a level converting factor for each of the image signals, a weighting factor calculating unit 14 for calculating a weighting factor for each of the image signals; and an adding unit 17 for adding up the image signals respectively multiplied by the level converting factors multiplied by the weighting factors. The image processing apparatus thus constructed can obtain images of wide dynamic range in a simply manner as well as reduce loss of minute image information due to accumulated processing delays and computing errors.

摘要翻译： 本发明提供一种图像处理装置，包括：图像信号输入单元11，用于在曝光时间内输入彼此不同的多个图像信号;第一和第二电平转换因子计算单元12,13，用于计算电平转换因子 每个图像信号，用于计算每个图像信号的加权因子的加权因子计算单元14; 以及加法单元17，用于将分别乘以乘以加权因子的电平转换因子的图像信号相加。 这样构成的图像处理装置可以简单地获得宽动态范围的图像，并且减少由于累积的处理延迟和计算错误导致的微小图像信息的损失。

公开(公告)号：US5926577A

公开(公告)日：1999-07-20

申请号：US637490

申请日：1996-04-25

申请人： Misa Kasahara ,  Makoto Sube ,  Jun Ebisawa

发明人： Misa Kasahara ,  Makoto Sube ,  Jun Ebisawa

IPC分类号： H04N5/208 ,  H04N5/14 ,  H04N5/21 ,  H04N1/409 ,  G06T5/00

CPC分类号： H04N5/142 ,  H04N5/21

摘要： A video signal processing circuit for processing a video signal including a noise is disclosed which comprises: an edge enhancement signal generation circuit for generating an edge enhancement signal from the video signal; a noise reduction circuit for reducing a level of the noise to generate a noise reduced video signal; and an adder for adding the edge enhancement signal to the noise reduction video signal to output a processed video signal. The apparatus may further comprise an input terminal for receiving the video signal, wherein the edge enhancement signal generation circuit and the noise reduction circuit coupled to the input terminal are in parallel. This apparatus may further comprise a first delay circuit for delaying the video signal by one horizontal line period to generate a 1-H delayed video signal and a second delay circuit responsive to the video signal for generating a 2-H delayed video signal, wherein the edge enhancement signal generation circuit generates the edge enhanced signal from the video signal, the 1-H delayed video signal, and the 2-H delayed video signal and the noise reduction circuit generates the noise reduced video signal from the video signal, the 1-H delayed video signal, and the 2-H-delayed video signal.

摘要翻译： 公开了一种用于处理包括噪声的视频信号的视频信号处理电路，其包括：边缘增强信号产生电路，用于从视频信号产生边缘增强信号; 用于降低噪声电平以产生降噪视频信号的噪声降低电路; 以及加法器，用于将边缘增强信号与降噪视频信号相加以输出经处理的视频信号。 该装置还可以包括用于接收视频信号的输入端，其中耦合到输入端的边缘增强信号产生电路和降噪电路是并联的。 该装置还可以包括用于将视频信号延迟一个水平行周期以产生1-H延迟视频信号的第一延迟电路和响应于视频信号产生2-H延迟视频信号的第二延迟电路，其中， 边缘增强信号发生电路从视频信号，1-H延迟视频信号和2-H延迟视频信号产生边缘增强信号，并且噪声降低电路从视频信号产生降噪视频信号， H延迟视频信号和2-H延迟的视频信号。