Image processing method and apparatus for contrast enhancement using intensity mapping
    1.
    发明授权
    Image processing method and apparatus for contrast enhancement using intensity mapping 有权
    使用强度映射的对比度增强的图像处理方法和装置

    公开(公告)号:US08131109B2

    公开(公告)日:2012-03-06

    申请号:US11760852

    申请日:2007-06-11

    IPC分类号: G06K9/36

    摘要: Provided are an image processing method and apparatus for enhancing contrast. The image processing apparatus includes a determination unit that determines whether contrast enhancement processing should be performed on an input image; an intensity mapping unit that generates a plurality of images having different exposure times from the input image, using intensity mapping, if the contrast enhancement processing should be performed on the input image; and an image composition unit that composes the plurality of images into a composed image. Therefore, it is possible to reduce a color change or a false contour phenomenon that are generated in a related art contrast enhancement process.

    摘要翻译: 提供了一种用于增强对比度的图像处理方法和装置。 图像处理装置包括确定单元,其确定是否应当对输入图像执行对比度增强处理; 强度映射单元,如果对输入图像执行对比度增强处理,则使用强度映射来生成具有与输入图像不同的曝光时间的多个图像; 以及将多个图像组成合成图像的图像合成单元。 因此,可以减少在相关技术的对比度增强处理中产生的颜色变化或假轮廓现象。

    Deinterlacing apparatus and method
    2.
    发明授权
    Deinterlacing apparatus and method 有权
    去隔行装置和方法

    公开(公告)号:US07321396B2

    公开(公告)日:2008-01-22

    申请号:US10703568

    申请日:2003-11-10

    IPC分类号: H04N7/01

    CPC分类号: H04N7/012 H04N5/145

    摘要: A deinterlacing apparatus and method thereof include a motion compensation unit implementing motion-compensated temporal interpolation for each of estimated motion vectors with reference to a previous field and a next field, which are respectively ahead of and behind a current field to be interpolated, producing interpolation values of a pixel to be interpolated, and outputting a selected value from the interpolation values as a first interpolation value. Further, a spatial interpolation unit producing a second interpolation value of the pixel to be interpolated using values of pixels around the pixel to be interpolated, and an output unit mixing the first and second interpolation.

    摘要翻译: 一种去隔行扫描装置及其方法包括:运动补偿单元,其针对前述场和后一场,分别在待内插的当前场之前和之后,对每个估计的运动矢量实施运动补偿时间插值, 将要内插的像素的值作为第一内插值从插补值输出。 此外,空间内插单元使用要被内插的像素周围的像素的值来产生要内插的像素的第二内插值,以及混合第一和第二插值的输出单元。

    Apparatus for converting image signal and a method thereof
    3.
    发明申请
    Apparatus for converting image signal and a method thereof 审中-公开
    用于转换图像信号的装置及其方法

    公开(公告)号:US20070040935A1

    公开(公告)日:2007-02-22

    申请号:US11376334

    申请日:2006-03-16

    IPC分类号: H04N7/01

    摘要: An apparatus for converting an image signal includes a motion estimation unit which estimates a motion vector using current and reference fields; a ticker region detection unit which detects a ticker region of an image using the estimated motion vector where an image moving with a constant speed and direction in a current field is found; a motion information analysis unit which determines whether or not there exists an image moving with a constant speed and direction in the ticker region based on the frequency of a motion vector estimated within the detected ticker region; and an interpolation unit which interpolates the current field by controlling a degree of temporal and spatial interpolations using an output of the motion information analysis unit. Accordingly, interpolation is differently applied in accordance with characters and graphics moving with a constant speed and direction in an input image, so that picture quality can be enhanced.

    摘要翻译: 用于转换图像信号的装置包括运动估计单元,其使用当前和参考场来估计运动矢量; 使用估计的运动矢量来检测图像的行情区域的行情区域检测单元,其中发现以当前场中的恒定速度和方向移动的图像; 运动信息分析单元,其基于在所检测到的代码区域内估计的运动矢量的频率来确定是否存在以所述行情区域中的恒定速度和方向移动的图像; 以及内插单元,其使用运动信息分析单元的输出来控制时间和空间内插的程度来内插当前场。 因此,根据在输入图像中以恒定的速度和方向移动的字符和图形,不同地应用插值,从而可以提高图像质量。

    Image processing device capable of selecting field and method thereof
    5.
    发明申请
    Image processing device capable of selecting field and method thereof 有权
    能够选择场的图像处理装置及其方法

    公开(公告)号:US20060072035A1

    公开(公告)日:2006-04-06

    申请号:US11237959

    申请日:2005-09-29

    IPC分类号: H04N7/01

    摘要: An image processing device and method to select a field to use in interpolation, if an input image is a film image. The image processing device includes a field selector to select a field to use to interpolate a current field based on difference values in field data among first, second, and third fields being consecutively input in an input image, the field to use to interpolate the current image being one of the first and the third fields and the current field being the second field, a film detector to generate a pattern based on the difference values in the field data between the first, second, and third fields and to determine whether the input image is a film image based on the generated pattern, and an interpolator to interpolate the second field using the one of the first and third field selected by the field selector if the film detector determines the input image to be a film image. Accordingly, when the input image is a film image without a bad-edit, the interpolation process is executed by selecting two temporarily consecutive fields of a field to be interpolated, and using the field with a smaller difference values in field data from the field to be interpolated and a problem of judder in images can be resolved.

    摘要翻译: 如果输入图像是胶片图像,则选择要在插值中使用的场的图像处理装置和方法。 图像处理装置包括场选择器,用于基于在输入图像中连续输入的第一,第二和第三场中的场数据中的差值来选择用于内插当前场的场,所述场用于内插当前场 图像是第一和第三场中的一个,当前场是第二场,膜检测器,用于基于第一场,第二场和第三场之间的场数据中的差值生成模式,并确定输入 图像是基于所生成的图案的胶片图像,以及内插器,如果胶片检测器将输入图像确定为胶片图像,则使用场选择器选择的第一和第三场中的一个来内插第二场。 因此,当输入图像是没有不良编辑的胶片图像时,通过选择要插值的场的两个临时连续的场来执行内插处理,并且使用来自场的场数据中具有较小差值的场 被插值,可以解决图像抖动问题。

    Apparatus for and method of transforming scanning format

    公开(公告)号:US06990148B2

    公开(公告)日:2006-01-24

    申请号:US10349216

    申请日:2003-01-23

    申请人: Seung-joon Yang

    发明人: Seung-joon Yang

    IPC分类号: H04N7/12

    CPC分类号: H04N7/012 H04N5/145 H04N7/014

    摘要: An apparatus for and a method of transforming a scanning format can adaptively select a scanning format transformation method. A motion estimating unit estimates a final motion vector among the motion vectors determined by a full search and predicted motion estimation and determines a first motion estimation type of the final motion vector. A motion analyzing unit and a motion estimation type analyzing unit respectively determine an existence of a global motion and a third motion estimation type from the final motion vector. A motion compensating unit and a temporal-spatial interpolating unit generate a first pixel and a second pixel, respectively. A format transforming unit transforms the scanning format by adaptively selecting one of the first and second pixels on a basis of at least one of the third motion estimation type and the information on the existence of the global motion. As a result, the scanning format transformation method can be adaptively selected from a motion compensation method and a temporal-spatial interpolation method according to the motion type.

    Apparatus and method to remove jagging artifact
    7.
    发明申请
    Apparatus and method to remove jagging artifact 审中-公开
    装置和方法去除锯齿状伪影

    公开(公告)号:US20050276506A1

    公开(公告)日:2005-12-15

    申请号:US11117420

    申请日:2005-04-29

    摘要: In an apparatus and a method to remove jagging artifacts, a calculating unit defines a window of a predetermined size based on a current pixel in an input current frame or field, and calculates at least one eigen value and at least one eigen vector to determine a feature of the window. A weight determining unit determines the feature of the window based on the calculated eigen value and then determines a filtering weight to be applied to filtering based on the determined feature. A low pass filter filters the window based on the calculated eigen vector and the determined filtering weight. Accordingly, it is possible to remove jagging artifacts occurring in a region, such as an edge, upon image conversion.

    摘要翻译: 在一种去除锯齿状伪影的装置和方法中,计算单元基于输入当前帧或场中的当前像素定义预定大小的窗口,并且计算至少一个本征值和至少一个特征矢量以确定 窗口的特征 权重确定单元基于所计算的本征值来确定窗口的特征,然后基于所确定的特征来确定要应用于过滤的过滤权重。 低通滤波器基于计算的特征向量和确定的滤波权重来过滤窗口。 因此,可以在图像转换时去除出现在诸如边缘的区域中的锯齿状伪影。

    Apparatus for image enhancement and method of using the same
    8.
    发明申请
    Apparatus for image enhancement and method of using the same 审中-公开
    图像增强装置及其使用方法

    公开(公告)号:US20050013503A1

    公开(公告)日:2005-01-20

    申请号:US10891088

    申请日:2004-07-15

    摘要: An image enhancing apparatus and method in which a PDF calculation unit calculates a probability density function according to a distribution of a luminance value with respect to each pixel of an input image. An average brightness calculation unit calculates average brightness of the input image based on the probability density function and an overflow threshold adaptive to the average brightness is calculated. A BUBO unit calculates a probability density function of which a distribution is adjusted, based on the overflow threshold and a predetermined underflow threshold and a cumulative distribution function is calculated with respect to the adjusted probability density function. A CDF compensating unit compensates for an influence that the BUBO unit has on the cumulative distribution function and a mapping unit uses the compensated cumulative distribution function as a mapping function, and adjusts and outputs the luminance value with respect to each pixel of the input image.

    摘要翻译: 一种图像增强装置和方法,其中,PDF计算单元根据关于输入图像的每个像素的亮度值的分布来计算概率密度函数。 平均亮度计算单元基于概率密度函数计算输入图像的平均亮度,并且计算适合于平均亮度的溢出阈值。 BUBO单元基于溢出阈值和预定下溢阈值计算调整分布的概率密度函数,并且相对于调整后的概率密度函数计算累积分布函数。 CDF补偿单元补偿BUBO单元对累积分布函数的影响,并且映射单元使用经补偿的累积分布函数作为映射函数,并且调整并输出关于输入图像的每个像素的亮度值。

    Field sequential display apparatus that reduces color breakup and method thereof
    10.
    发明授权
    Field sequential display apparatus that reduces color breakup and method thereof 有权
    减少分色的场顺序显示装置及其方法

    公开(公告)号:US07952549B2

    公开(公告)日:2011-05-31

    申请号:US11441148

    申请日:2006-05-26

    IPC分类号: G09G3/36

    摘要: A field sequential display apparatus and an image display method thereof are provided. A field sequential display apparatus includes: a color-coordinate conversion unit which analyses image state information of a plurality of input image signals of primary colors representing one image and converts the input image signals of primary colors into image signals of primary colors and at least one image signal of specific colors by using the image state information; a display panel displaying the converted image signals; and a light source driving unit which sequentially drives light sources corresponding to colors of the converted image signals. Accordingly, color breakup can be prevented, and image quality can be improved.

    摘要翻译: 提供场顺序显示装置及其图像显示方法。 场顺序显示装置包括:颜色坐标转换单元,分析表示一个图像的原色的多个输入图像信号的图像状态信息,并将原色的输入图像信号转换为原色的图像信号和至少一个 通过使用图像状态信息的特定颜色的图像信号; 显示转换后的图像信号的显示面板; 以及光源驱动单元,其顺序地驱动与转换的图像信号的颜色对应的光源。 因此,可以防止颜色分解,并且可以提高图像质量。