Method and apparatus of determining the best focus position of a lens
    22.
    发明授权
    Method and apparatus of determining the best focus position of a lens 有权
    确定透镜最佳对焦位置的方法和装置

    公开(公告)号:US07474846B2

    公开(公告)日:2009-01-06

    申请号:US11354126

    申请日:2006-02-15

    Applicant: Igor Subbotin

    Inventor: Igor Subbotin

    CPC classification number: G02B7/36

    Abstract: A method and apparatus for accurately auto focusing a lens of an imaging device. An imaged scene is split into an array of zones. The minimum and maximum sharpness score for each zone is determined over a plurality of lens positions. A histogram of the lens positions of the corresponding maximum weighted sharpness score for each zone is created. The peak of the histogram is determined to be the best focus position for a given scene.

    Abstract translation: 一种用于精确自动聚焦成像装置的透镜的方法和装置。 成像场景被分割成一个区域阵列。 在多个透镜位置上确定每个区域的最小和最大清晰度得分。 创建每个区域相应的最大加权锐度得分的透镜位置的直方图。 直方图的峰值被确定为给定场景的最佳对焦位置。

    Methods and apparatuses for image exposure correction
    23.
    发明申请
    Methods and apparatuses for image exposure correction 有权
    用于图像曝光校正的方法和装置

    公开(公告)号:US20080298794A1

    公开(公告)日:2008-12-04

    申请号:US11806492

    申请日:2007-05-31

    CPC classification number: H04N5/2354

    Abstract: Methods and apparatuses for image exposure include capturing a first image under a first illumination condition, determining a luminance of the first image at a plurality of sectors, capturing a second image under a second illumination condition employing an artificial light source, determining a luminance of the second image at the plurality of sectors, and determining if the artificial light source should be used to capture a final image using the luminances of the first and second images at the plurality of sectors. If the artificial light source is to be used, an output level of the light source is determined.

    Abstract translation: 用于图像曝光的方法和装置包括在第一照明条件下捕获第一图像,确定多个扇区处的第一图像的亮度,在使用人造光源的第二照明条件下拍摄第二图像,确定 并且确定是否应该使用人造光源来使用多个扇区中的第一和第二图像的亮度来捕获最终图像。 如果要使用人造光源,则确定光源的输出电平。

    METHODS AND APPARATUS PROVIDING LIGHT ASSISTED AUTOMATIC FOCUS
    24.
    发明申请
    METHODS AND APPARATUS PROVIDING LIGHT ASSISTED AUTOMATIC FOCUS 审中-公开
    提供光辅助自动聚焦的方法和装置

    公开(公告)号:US20080297649A1

    公开(公告)日:2008-12-04

    申请号:US11756282

    申请日:2007-05-31

    Applicant: Igor Subbotin

    Inventor: Igor Subbotin

    CPC classification number: G03B13/36 G02B7/36

    Abstract: Methods and apparatus for accurately auto focusing a lens of an imaging device. The method includes the steps of focusing an image of a subject on an imager, determining that the subject has moved, and refocusing the image of the subject on the imager by comparing a first brightness of a first scene captured before determining that the subject has moved and a second brightness of a second scene captured after determining that the subject has moved. The first brightness and second brightness are provided with the assistance of a light source.

    Abstract translation: 用于精确自动聚焦成像装置的透镜的方法和装置。 该方法包括以下步骤:将被摄体的图像聚焦在成像器上,确定被摄体已经移动,并且通过比较在确定被摄体已经移动之前拍摄的第一场景的第一亮度而将成像器上的图像重新聚焦在成像器上 以及在确定被摄体已经移动之后捕获的第二场景的第二亮度。 在光源的帮助下提供第一亮度和第二亮度。

    High intrascene dynamic range NTSC and PAL imager
    25.
    发明授权
    High intrascene dynamic range NTSC and PAL imager 有权
    高内嵌动态范围NTSC和PAL成像器

    公开(公告)号:US07382407B2

    公开(公告)日:2008-06-03

    申请号:US10230205

    申请日:2002-08-29

    Abstract: The invention provides a new method and apparatus for NTSC and PAL image sensors which employs fusion of adjacent row pixel charge samples to generate image data for a row. A variety of fusion schemes are possible for fusing the pixel signals from the adjacent rows. The rows of pixels are scanned so that each scan takes an odd row signal sample and, in some cases, an adjacent even row signal sample when specified conditions are met. One sampled row of the two adjacent rows integrate an image with a first integration period while the other adjacent row integrates an image with a second integration period.

    Abstract translation: 本发明提供了一种用于NTSC和PAL图像传感器的新方法和装置,其使用相邻行像素电荷样本的融合来生成行的图像数据。 各种融合方案可以用于融合来自相邻行的像素信号。 扫描像素行,使得当满足特定条件时,每个扫描采取奇数行信号采样,并且在一些情况下,采用相邻偶数行信号采样。 两个相邻行的一个采样行将第一积分周期的图像整合,而另一个相邻行将图像与第二积分周期相集成。

    Method, apparatus and system providing adjustment of pixel defect map
    26.
    发明申请
    Method, apparatus and system providing adjustment of pixel defect map 有权
    提供像素缺陷图的调整的方法,装置和系统

    公开(公告)号:US20080049125A1

    公开(公告)日:2008-02-28

    申请号:US11509712

    申请日:2006-08-25

    Applicant: Igor Subbotin

    Inventor: Igor Subbotin

    CPC classification number: H04N5/367 H04N5/3675

    Abstract: A method, apparatus and system that allows for the identification of defective pixels, for example, defective pixel clusters, in an imager device. The method, apparatus and system determine, during use of the imager device, that a pixel defect, e.g., cluster defect, exists and accurately maps the location of the defective pixel. By analyzing more than one frame of an image, the method increases the accuracy of the defect mapping, which is used to improve the quality of the resulting image data.

    Abstract translation: 一种允许在成像器装置中识别缺陷像素,例如缺陷像素簇的方法,装置和系统。 该方法,装置和系统在使用成像器装置期间确定像素缺陷(例如,簇缺陷)存在并准确地映射缺陷像素的位置。 通过分析图像的多个帧,该方法提高了缺陷映射的精度,用于提高生成的图像数据的质量。

    Imaging apparatus providing black level compensation of a successive approximation A/D converter
    27.
    发明授权
    Imaging apparatus providing black level compensation of a successive approximation A/D converter 有权
    成像装置提供逐次逼近A / D转换器的黑电平补偿

    公开(公告)号:US07317480B1

    公开(公告)日:2008-01-08

    申请号:US10000660

    申请日:2001-10-30

    Abstract: Image sensor with a successive approximation A/D converter that automatically compensates for black level and provides a signal indicative of the difference between the reset level and the signal level. Black level for each of a plurality of color pixels may be obtained. This may be obtained from, for example, an image sensor with intentionally darkened pixels. Levels from these pixels are sampled, and an average of these pixels is used to form a black level for similarly-colored pixels. That black level is stored, and used to drive a D/A converter. Another D/A converter forms the actual conversion, and is compared to a reference. The reference is selected such that the output signal is automatically compensated for black level, and also corresponds to the difference between signal and reset.

    Abstract translation: 具有逐次逼近A / D转换器的图像传感器,其自动补偿黑电平并提供指示复位电平和信号电平之间的差异的信号。 可以获得多个彩色像素中的每一个的黑色电平。 这可以从例如具有有意变暗的像素的图像传感器获得。 对这些像素的电平进行采样,并且使用这些像素的平均来形成用于类似彩色像素的黑色电平。 存储黑色电平,并用于驱动D / A转换器。 另一个D / A转换器形成实际转换,并与参考进行比较。 选择参考,使得输出信号自动补偿黑电平,并且也对应于信号和复位之间的差异。

    Method and apparatus for automatic gain and exposure control for maintaining target image brightness in video imager systems
    28.
    发明授权
    Method and apparatus for automatic gain and exposure control for maintaining target image brightness in video imager systems 有权
    用于自动增益和曝光控制的方法和装置,用于维持视频成像系统中的目标图像亮度

    公开(公告)号:US07245320B2

    公开(公告)日:2007-07-17

    申请号:US10160089

    申请日:2002-06-04

    CPC classification number: H04N5/2357 H04N5/2353 H04N5/243

    Abstract: In an image processing system, the imager gain and the exposure time are adjusted based on a predefined stepping sequence using a stepping table designed to maximize the signal-to-noise ratio in the image. This is achieved by providing a stepping sequence with each step having the largest suitable integration time (exposure) and an appropriate amplifier and digital gain setting, while achieving an equal relative percentage change in image brightness between adjacent sequence steps. The size of the executed AE steps is proportional to the distance between a current image luminance and the target luminance. This is achieved by the capability to skip one or more steps in the stepping sequence, if appropriate, for each relevant executed step, with the number of skipped steps, if any, being proportional to the magnitude of the deviation from the target brightness.

    Abstract translation: 在图像处理系统中,使用设计成使图像中的信噪比最大化的步进表,基于预定的步进序列来调整成像器增益和曝光时间。 这通过提供具有最大合适积分时间(曝光)和适当的放大器和数字增益设置的每个步骤的步进序列来实现,同时在相邻序列步骤之间实现图像亮度相等的相对百分比变化。 执行的AE步骤的大小与当前图像亮度和目标亮度之间的距离成比例。 这是通过对于每个相关的执行步骤(如果适用的话)跳过步进序列中的一个或多个步骤的能力来实现的,并且跳过的步骤的数目(如果有的话)与与目标亮度的偏差的大小成比例。

    Method and apparatus for real time identification and correction of pixel defects for image sensor arrays

    公开(公告)号:US20070058056A1

    公开(公告)日:2007-03-15

    申请号:US11598804

    申请日:2006-11-14

    CPC classification number: H04N5/3675 G06T5/005 G06T5/20

    Abstract: An image processing system and method compares each pixel of an image obtained from an image sensor array with at least eight surrounding pixels of the same color in the filter array. If the signal of a given pixel is larger than the respective signals of all eight surrounding pixels of the same color, then the value of that central pixel signal is substituted with the maximum signal value among the surrounding eight pixels of the same color. Similarly, if the signal of a given pixel is smaller than the respective signals of all eight surrounding pixels of the same color, then the value of that central pixel signal is substituted with the minimum signal value among the surrounding eight pixels of the same color.

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