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1. 发明授权

US06690418B1 Image sensing apparatus image signal controller and method 失效
标题翻译：图像传感装置图像信号控制器及方法
公开(公告)号：US06690418B1
公开(公告)日：2004-02-10
申请号：US08771399
申请日：1996-12-19
申请人： Ken Terasawa , Yuichiro Hattori
发明人： Ken Terasawa , Yuichiro Hattori
IPC分类号： H04N968
CPC分类号： H04N9/68 , H04N5/3653 , H04N5/3742
摘要： Two image signals from a non-interlace scanning type CCD at predetermined horizontal and vertical sampling frequencies are respectively inputted to automatic gain controllers, then to a color separator where the input signals are separated into luminance signal and color difference signals. The luminance signal is processed by a two-dimensional filter which traps frequency components having ½ of the horizontal and vertical sampling frequencies. Accordingly, a variation in amplification characteristics of the automatic gain controllers is compensated as a variation of luminance signals having Nyquist frequencies in the horizontal and vertical directions. Thereby, bad effect due to variations in amplification characteristics of the automatic gain controllers is reduced even through two output signals from the non-interlace scanning type CCD are processed by the respective automatic gain controllers.
摘要翻译：分别将预定水平和垂直采样频率的来自不隔行扫描型CCD的两个图像信号输入到自动增益控制器，然后分别输入到颜色分离器，其中输入信号被分离成亮度信号和色差信号。亮度信号由二维滤波器处理，二维滤波器捕获具有水平和垂直采样频率的1/2的频率分量。因此，自动增益控制器的放大特性的变化被补偿为在水平和垂直方向上具有奈奎斯特频率的亮度信号的变化。由此，由于自动增益控制器的放大特性的变化引起的不良影响，即使来自不隔行扫描型CCD的两个输出信号也由相应的自动增益控制器进行处理。

2. 发明授权

US06753910B1 Image processing apparatus and image processing method 失效
标题翻译：图像处理装置和图像处理方法
公开(公告)号：US06753910B1
公开(公告)日：2004-06-22
申请号：US09441824
申请日：1999-11-17
申请人： Masami Ogata , Takashi Tsuchiya , Kazuhiko Ueda
发明人： Masami Ogata , Takashi Tsuchiya , Kazuhiko Ueda
IPC分类号： H04N968
CPC分类号： H04N5/20 , H04N5/205
摘要： The invention provides an image processing apparatus and an image processing method and can be applied to an image information apparatus such as, for example, a television receiver, a video tape recorder, a television camera and a printer so that the gradation can be corrected while effectively preventing a finally obtained image from partial deterioration of the contrast. An area to which each of image data belongs is discriminated with reference to, for example, a low frequency component of a pixel value, and a correction coefficient is produced for the area. Such correction coefficients are smoothed between successive frames, and the pixel values of the image data are corrected with the smoothed correction coefficients.
摘要翻译：本发明提供一种图像处理装置和图像处理方法，并且可以应用于诸如电视接收机，录像机，电视摄像机和打印机的图像信息装置，使得可以校正灰度等级有效地防止最终获得的图像的对比度的部分劣化。参考例如像素值的低频分量来区分图像数据所属的区域，并且为该区域产生校正系数。这样的校正系数在连续帧之间被平滑，并且用平滑的校正系数来校正图像数据的像素值。

3. 发明授权

US06177962B1 Apparatus and method for preventing oversaturation of chrominance signals 有权
标题翻译：用于防止色度信号过饱和的装置和方法
公开(公告)号：US06177962B1
公开(公告)日：2001-01-23
申请号：US09343622
申请日：1999-06-30
申请人： Mark Francis Rumreich , Mark Robert Zukas , Ronald Thomas Keen
发明人： Mark Francis Rumreich , Mark Robert Zukas , Ronald Thomas Keen
IPC分类号： H04N968
CPC分类号： H04N9/68
摘要： A chrominance signal C is separated (30) into component vectors U and V and coupled via respective paths each including a controllable gain amplifier (60,62) to respective outputs (56,58). A chroma overload protection unit (50) is provided including a saturation calculator (78) determines the saturation of the vector components and provides a saturating indicating signal to a gain characteristic unit (72) which jointly controls the gain of the amplifiers to proportionally limit the vector component magnitudes as a given function of the saturation indicating signal on a pixel by pixel basis thereby providing output component vectors (U,V) exhibiting no tint shift upon limiting conditions. In a digital embodiment, the amplifiers are implemented by multipliers (512,522) having outputs subjected to symmetrical rounding (514,524), saturation is calculated (78A) by an approximation to the square root of the sum of squares of the vector components, and plural look up tables (72A) are provided for generating the gain control signal G.
摘要翻译：色度信号C被分离（30）成为分量向量U和V，并通过各自的路径耦合，每个路径包括可控增益放大器（60,62）到相应的输出端（56,58）。提供了色度过载保护单元（50），其包括饱和度计算器（78）确定矢量分量的饱和度，并向增益特征单元（72）提供饱和指示信号，该增益特性单元（72）共同控制放大器的增益以成比例地限制矢量分量幅度作为逐个像素的饱和指示信号的给定函数，从而提供在限制条件下不显示色调偏移的输出分量矢量（U，V）。在数字实施例中，放大器由具有经过对称舍入（514,524）的输出的乘法器（512,522）实现，通过近似于向量分量的平方和的平方根来计算饱和度（78A），并且多个外观提供上表（72A）用于产生增益控制信号G.

4. 发明授权

US06628841B1 Image sensing apparatus 失效
标题翻译：影像传感装置
公开(公告)号：US06628841B1
公开(公告)日：2003-09-30
申请号：US09348424
申请日：1999-07-07
申请人： Tohru Watanabe
发明人： Tohru Watanabe
IPC分类号： H04N968
CPC分类号： H04N5/2254 , H04N9/045
摘要： An electronic still camera includes, in addition to a color separation filter, a monochromatic filter which can be moved into or out of a position in from of a solid-state image sensor. The camera includes a processor for generating luminance and chrominance information from image information transferred to it from the image sensor. If the monochromatic filter is in the optical path, the processor generated chrominance information has a predetermined fixed value and the luminance information has a higher resolution than when monochromatic filter is outside of the optical path.
摘要翻译：除了分色滤光器之外，电子静态照相机还包括可以从固态图像传感器移入或移出位置的单色滤光器。该照相机包括一个处理器，用于从图像传感器传送给它的图像信息产生亮度和色度信息。如果单色滤光器在光路中，则处理器产生的色度信息具有预定的固定值，并且亮度信息具有比当单色滤光器在光路外部时高的分辨率。

5. 发明授权

US06614471B1 Luminance correction for color scanning using a measured and derived luminance value 失效
标题翻译：使用测量和派生亮度值进行彩色扫描的亮度校正
公开(公告)号：US06614471B1
公开(公告)日：2003-09-02
申请号：US09309024
申请日：1999-05-10
申请人： Cynthia D. Ott
发明人： Cynthia D. Ott
IPC分类号： H04N968
CPC分类号： H04N1/6002 , H04N1/486 , H04N1/60
摘要： A color scanning technique that maintains a high image quality while permitting improved scanning speed and improved perceived resolution. A color pixel array and a luminance pixel array are generated representative of a target object. The pixel arrays are related in that one or more luminance pixels of the luminance pixel array cover each pixel of the color pixel array. A luminance value is sensed for each luminance pixel, and three primary color values are sensed for each color pixel. A measured luminance value is then associated with each respective color pixel wherein the measured luminance value is a function of the sensed luminance values for the one or more luminance pixels covering the respective color pixel. A derived luminance value is also calculated for each respective color pixel wherein the derived luminance value is a function of the three sensed primary color values for the respective color pixel. A luminance correction factor is then determined for each respective color pixel as a function of the color pixel's derived and measured luminance values. The luminance correction factor for each respective color pixel is applied to the sensed primary color values of the color pixel, or to a linear combination thereof, to determine luminance-corrected color values. In this way the overall pixel luminance implied by the aggregate measured color values will show a consistency with the directly measured luminances. The luminance-corrected color values together with the measured luminance values may then be subjected to further appropriate transformation to determine color coordinates for each luminance pixel and/or for each color pixel, which may then be used in further processing. A logarithmic method is used for efficient computation of correction factors and luminance-corrected color values.
摘要翻译：一种彩色扫描技术，可以保持高图像质量，同时允许改进的扫描速度和改善的感知分辨率。产生代表目标对象的彩色像素阵列和亮度像素阵列。像素阵列的关联在于亮度像素阵列的一个或多个亮度像素覆盖彩色像素阵列的每个像素。感测每个亮度像素的亮度值，并且针对每个彩色像素检测三个基色值。然后将测量的亮度值与每个相应的颜色像素相关联，其中测量的亮度值是覆盖相应颜色像素的一个或多个亮度像素的感测亮度值的函数。还为每个相应颜色像素计算派生亮度值，其中导出的亮度值是相应颜色像素的三个感测的原色值的函数。然后根据颜色像素的导出和测量的亮度值，为每个相应的颜色像素确定亮度校正因子。将每个相应颜色像素的亮度校正因子应用于感测到的彩色像素的原色值或其线性组合，以确定亮度校正的颜色值。以这种方式，聚合测量的颜色值所暗示的整体像素亮度将显示与直接测量的亮度的一致性。亮度校正后的颜色值连同测得的亮度值可随后进行进一步适当的变换，以确定每个亮度像素和/或每个彩色像素的颜色坐标，然后可以将其用于进一步处理。对数方法用于校正因子和亮度校正颜色值的有效计算。

6. 发明授权

US06822694B2 Signal processing apparatus 失效
标题翻译：信号处理装置
公开(公告)号：US06822694B2
公开(公告)日：2004-11-23
申请号：US09203923
申请日：1998-12-02
申请人： Shinichiro Miyazaki , Hiroyuki Kojima , Akira Shirahama , Hiroshi Sugaya
发明人： Shinichiro Miyazaki , Hiroyuki Kojima , Akira Shirahama , Hiroshi Sugaya
IPC分类号： H04N968
CPC分类号： H04N9/76
摘要： According to the signal processing apparatus of the present invention, in a text signal processing circuit, predetermined signal processes are executed to a luminance signal Y and color difference signals U and V in which a ratio of sampling clocks is equal to (4:4:4) and resultant signals are supplied to a mixing circuit. In a video signal processing circuit, predetermined signal processes are executed to the signals Y, U, and V in which a ratio of sampling clocks is equal to (4:1:1) or (4:2:2). The signal Y is supplied to the mixing circuit through a delay adjusting circuit and the high frequency components are removed from the signals U and V by a band limiting filter and, after that, the resultant signals are supplied to the mixing circuit. The signal mixed by the mixing circuit is supplied to a LPF through a D/A converter. In the LPF, the signal is demodulated by the band limiting filter according to (4:4:4).
摘要翻译：根据本发明的信号处理装置，在文本信号处理电路中，对亮度信号Y和采样时钟的比例等于（4:4:4）的色差信号U，V执行规定的信号处理， 4），并将合成信号提供给混合电路。在视频信号处理电路中，对采样时钟的比例等于（4:1:1）或（4:2:2）的信号Y，U和V执行预定的信号处理。信号Y通过延迟调整电路提供给混合电路，并通过频带限制滤波器从信号U和V中去除高频分量，然后将所得到的信号提供给混频电路。由混合电路混合的信号通过D / A转换器提供给LPF。在LPF中，信号由（4：4：4）的带限滤波器解调。

7. 发明授权

US06542187B1 Correcting for chrominance interpolation artifacts 失效
标题翻译：纠正色度插值伪像
公开(公告)号：US06542187B1
公开(公告)日：2003-04-01
申请号：US09112555
申请日：1998-07-09
申请人： John F. Hamilton, Jr. , James E. Adams, Jr.
发明人： John F. Hamilton, Jr. , James E. Adams, Jr.
IPC分类号： H04N968
CPC分类号： G06T3/4015 , G06T3/4007 , G06T5/005 , H04N1/3935 , H04N1/4092 , H04N9/646 , H04N9/77
摘要： A method for correcting chrominance interpolation artifacts in a digital color image having color pixels in which each colored pixel is expressed as one luminance and two chrominance color values including computing a test value at each pixel which indicates the presence of a high contrast luminance feature, and adjusting the chrominance values at pixels in accordance with the computed test value to correct for chrominance interpolation artifacts.
摘要翻译：一种用于校正具有彩色像素的数字彩色图像中的色度插值伪影的方法，其中每个彩色像素被表示为一个亮度和两个色度颜色值，包括计算每个像素处的测试值，其指示存在高对比度亮度特征，以及根据计算的测试值调整像素处的色度值以校正色度插值伪像。

8. 发明授权

US06825876B1 Digital camera device with methodology for efficient color conversion 有权
标题翻译：具有高效颜色转换方法的数码相机设备
公开(公告)号：US06825876B1
公开(公告)日：2004-11-30
申请号：US09489511
申请日：2000-01-21
申请人： Venkat V. Easwar , Eric O. Bodnar , Shekhar Kirani , Philippe R. Kahn , Sonia Lee Kahn
发明人： Venkat V. Easwar , Eric O. Bodnar , Shekhar Kirani , Philippe R. Kahn , Sonia Lee Kahn
IPC分类号： H04N968
CPC分类号： G06T9/007
摘要： A digital imaging system is described that provides techniques for reducing the amount of processing power required by a given digital camera device and for reducing the bandwidth required for transmitting image information to a target platform. The system defers and/or distributes the processing between the digital imager (i.e., digital camera itself) and the target platform that the digital imager will ultimately be connected to. The system only performs a partial computation at the digital imager device and completes the computation somewhere else, such as at a target computing device (e.g., desktop computer) where time and size are not an issue (relative to the imager). This image processing technique employs an efficient color conversion process, using a GUV color space. After an RGB mosaic (image) is captured, the image may be “companded” or quantized by representing it with less bits (e.g., companding from 10 bits to 8 bits). The image is then mapped from RGB color space to GUV color space, using an RGB-to-GUV transformation. Once converted into GUV color space, the image may now be compressed, for instance using wavelet transform-based compression, and then transmitted, using wireless or wire-line transfer, to a target platform (e.g., desktop or server computer). At the target platform, the GUV information may be restored in a non-compressed format and then further processed into a desired representation (e.g., standard format, such as JPEG). In this fashion, the GUV-based methodology avoids the inefficiency of remaining in RGB color space and avoids the computational complexity of converting to YUV color space, yet retains the benefits associated with YUV color space (e.g., de-correlation of image information).
摘要翻译：描述了一种数字成像系统，其提供用于减少给定的数码相机设备所需的处理能力的量并减少将图像信息传送到目标平台所需的带宽的技术。该系统在数字成像器（即，数字照相机本身）和数字成像器最终将连接到的目标平台之间延迟和/或分发处理。该系统仅在数字成像器设备处执行部分计算，并且完成其它地方的计算，例如在时间和大小不是问题（相对于成像器）的目标计算设备（例如台式计算机）处。该图像处理技术使用有效的颜色转换处理，使用GUV颜色空间。在捕获RGB马赛克（图像）之后，可以通过用较少的比特（例如，从10比特到8比特的压缩比例）来表示图像来“压缩”或量化图像。然后，使用RGB到GUV变换，将图像从RGB颜色空间映射到GUV颜色空间。一旦转换成GUV颜色空间，图像现在可以被压缩，例如使用基于小波变换的压缩，然后使用无线或有线传输方式传送到目标平台（例如桌面或服务器计算机）。在目标平台上，可以以非压缩格式还原GUV信息，然后进一步处理为期望的表示（例如，标准格式，例如JPEG）。以这种方式，基于GUV的方法避免了RGB颜色空间中的残留效率低下，避免了转换为YUV色彩空间的计算复杂度，同时保留了与YUV色彩空间相关的优点（例如图像信息的去相关）。

9. 发明授权

US06816193B1 Image processing apparatus 失效
标题翻译：图像处理装置
公开(公告)号：US06816193B1
公开(公告)日：2004-11-09
申请号：US09695420
申请日：2000-10-25
申请人： Atsushi Kohashi , Junzo Sakurai
发明人： Atsushi Kohashi , Junzo Sakurai
IPC分类号： H04N968
CPC分类号： H04N9/045 , H04N5/142 , H04N9/646
摘要： An image processing apparatus includes: an image pickup section for converting an object light into image signals of Bayer RGB array; a color information detecting section for obtaining color information of the object from the image signals obtained by the image pickup section; a first luminance data generating section for finding luminance data for use in edge enhancement processing based on G signals of the image signals obtained by the image pickup section; a second luminance data generating section for finding luminance data for use in edge enhancement processing based on all color signals of the image signals; a selector for providing an output by switching between outputs of the first and second luminance data generating section; and a selection signal generating section for generating selection signal for controlling the switching of the selector based on color information obtained at the color information detecting section. The image processing apparatus is thereby achieved as capable of edge enhancement processing at favorable S/N and with less occurrence of edge noise in high saturation regions and low saturation regions.
摘要翻译：一种图像处理装置包括：用于将目标光转换成Bayer RGB阵列的图像信号的图像拾取部分; 颜色信息检测部分，用于从由图像拾取部分获得的图像信号中获得对象的颜色信息; 第一亮度数据生成部分，用于根据由图像拾取部分获得的图像信号的G信号，找到用于边缘增强处理的亮度数据; 第二亮度数据产生部分，用于基于所述图像信号的所有颜色信号，找到用于边缘增强处理的亮度数据; 选择器，用于通过在第一和第二亮度数据产生部分的输出之间切换来提供输出; 以及选择信号生成部分，用于根据在颜色信息检测部分获得的颜色信息产生用于控制选择器切换的选择信号。因此，图像处理装置能够在良好的S / N处进行边缘增强处理，并且在高饱和区域和低饱和区域中边缘噪声的出现较少。

10. 发明授权

US06697107B1 Smoothing a digital color image using luminance values 失效
标题翻译：使用亮度值平滑数字彩色图像
公开(公告)号：US06697107B1
公开(公告)日：2004-02-24
申请号：US09112554
申请日：1998-07-09
申请人： John F. Hamilton, Jr. , James E. Adams, Jr.
发明人： John F. Hamilton, Jr. , James E. Adams, Jr.
IPC分类号： H04N968
CPC分类号： G06T5/002 , G06T5/20 , G06T2207/10024 , H04N1/58 , H04N5/21 , H04N9/045 , H04N2209/046
摘要： A method for smoothing a digital color image having color pixels in which each colored pixel is expressed as one luminance and two chrominance color values, including computing parameters for at least two orientations for each pixel in the stored digital image; using the computed parameters to form a classifier value for each such orientation and using such classifiers to determine the pixel classification based on such classifiers; and smoothing pixel chroma values according to the determined pixel classification.
摘要翻译：一种用于平滑具有彩色像素的数字彩色图像的方法，其中每个彩色像素被表示为一个亮度和两个色度颜色值，包括用于存储的数字图像中的每个像素的至少两个取向的计算参数; 使用所计算的参数来为每个这样的取向形成分类器值，并使用这样的分类器来确定基于这样的分类器的像素分类; 以及根据确定的像素分类来平滑像素色度值。

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