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公开(公告)号：US08477848B1
公开(公告)日：2013-07-02
申请号：US12400227
申请日：2009-03-09
IPC分类号： H04N7/18
CPC分类号： H04N19/521 , H04N5/145 , H04N7/014
摘要： Systems and methods for converting a picture frame rate from a source video at a first rate to a target video at a second rate via interpolation of an intermediate frame. In one implementation, the system includes a phase plane correlation calculator including a low pass filter and a high pass filter for receiving previous frame data and current frame data where the phase plane correlation calculator is configured to generate a first motion vector based upon low pass representations and high pass representations. The system may also include a motion compensated interpolator that receives the first motion vector and an additional input motion vector and determines a final motion vector for use in interpolation. The system may further include an intermediate frame generator configured to generate the intermediate frame utilizing the final motion vector.
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公开(公告)号：US08014600B1
公开(公告)日：2011-09-06
申请号：US12751295
申请日：2010-03-31
申请人： Sujith Srinivasan , Nikhil Balram
发明人： Sujith Srinivasan , Nikhil Balram
摘要： The intelligent saturation controller calculates the exact maximum saturation any valid YCbCr pixel can undergo before it becomes invalid in RGB space. The controller models the saturation operation in RGB color space and calculates the maximum saturation level at which the RGB values falls outside the valid range. The saturation operation is performed independently for every pixel of the incoming video frame and ensures that each output pixel is a valid. The controller finds the maximum saturation for each input pixel and checks whether it is less than the input saturation factor. If so, then this calculated maximum saturation value is applied. If not, the input saturation factor is applied. Accordingly, the output RGB pixels are valid, and no clamping is necessary if no other video processing is done in YCbCr space. Increasing the saturation of the video signal results in a more vivid and more colorful picture.
摘要翻译： 智能饱和控制器计算任何有效YCbCr像素在RGB空间变为无效之前可以经历的精确最大饱和度。 控制器对RGB色彩空间中的饱和度进行建模，并计算RGB值超出有效范围的最大饱和度。 对输入视频帧的每个像素独立地执行饱和度运算，并确保每个输出像素都是有效的。 控制器找到每个输入像素的最大饱和度，并检查它是否小于输入饱和因子。 如果是，则应用该计算的最大饱和值。 如果不是，则应用输入饱和因子。 因此，输出RGB像素有效，如果在YCbCr空间中没有进行其他视频处理，则不需要钳位。 增加视频信号的饱和度会导致更生动和更丰富多彩的画面。
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公开(公告)号：US08913184B1
公开(公告)日：2014-12-16
申请号：US13554042
申请日：2012-07-20
摘要： Systems and methods are provided for detecting sharpness among video fields. In certain implementations of the systems and methods, a plurality of video fields is received and a sharpness metric for each of the plurality of video fields is determined. The sharpness metric of a first video field is compared to the sharpness metric of a second video field among the plurality of video fields and a video field source of the first video field and the second video field is determined based on the comparison.
摘要翻译： 提供了用于检测视频场中的锐度的系统和方法。 在系统和方法的某些实现中，接收多个视频字段，并且确定多个视频字段中的每一个的锐度度量。 将第一视频场的锐度度量与多个视频场中的第二视频场的锐度度度进行比较，并且基于比较确定第一视频场和第二视频场的视频场源。
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公开(公告)号：US08295596B1
公开(公告)日：2012-10-23
申请号：US11295750
申请日：2005-12-07
申请人： Sujith Srinivasan , Nikhil Balram
发明人： Sujith Srinivasan , Nikhil Balram
IPC分类号： G06K9/00
CPC分类号： G06T5/40 , G06T2207/10016 , G06T2207/10024 , G06T2207/20076 , G06T2207/20172
摘要： The adaptive contrast enhancer uses an adaptive histogram equalization-based approach to improve contrast in a video signal. For each video frame, the histogram of the pixel luminance values is calculated. The calculated histogram is divided into three regions that are equalized independently of the other. The equalized values are averaged with the original pixel values with a weighting factor that depends on the shape of the histogram. The weighting factors can be also chosen differently for the three regions to enhance the darker regions more than the brighter ones. The statistics calculated from one frame are used to enhance the next frame such that frame buffers are not required. Many of the calculations are done in the inactive time between two frames.
摘要翻译： 自适应对比度增强器使用基于自适应直方图均衡的方法来改善视频信号中的对比度。 对于每个视频帧，计算像素亮度值的直方图。 计算的直方图被分为三个独立于另一个区域的区域。 均衡值与原始像素值平均，加权因子取决于直方图的形状。 对于三个区域，加权因子也可以不同地选择，以增强比较亮的区域更深的区域。 使用从一帧计算的统计量来增强下一帧，使得不需要帧缓冲器。 许多计算是在两帧之间的非活动时间内完成的。
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公开(公告)号：US20100134496A1
公开(公告)日：2010-06-03
申请号：US12615594
申请日：2009-11-10
CPC分类号： G06T5/002 , G06T3/403 , G06T2207/10016 , G06T2207/20012
摘要： Devices, systems, apparatuses, methods, and other embodiments associated with bit resolution enhancement are described. In one embodiment, an apparatus includes logic configured to produce a high-resolution pixel from a low-resolution pixel. The apparatus includes logic configured to classify the high-resolution pixel as being in a smooth region of an image based on at least one of a gradient value and a variance value associated with the low-resolution pixel. The apparatus includes logic configured to selectively re-classify the high-resolution pixel as not being in the smooth region of the image based on a set of neighboring high-resolution pixels associated with high-resolution pixel. The apparatus includes logic configured to selectively filter the high-resolution pixel based on whether the high-resolution pixel remains classified as being in the smooth region of the image.
摘要翻译： 描述了与比特分辨率增强相关联的设备，系统，设备，方法和其他实施例。 在一个实施例中，一种装置包括被配置为从低分辨率像素产生高分辨率像素的逻辑。 该装置包括被配置为基于与低分辨率像素相关联的梯度值和方差值中的至少一个将高分辨率像素分类为图像的平滑区域的逻辑。 该装置包括配置成基于与高分辨率像素相关联的一组相邻高分辨率像素，将高分辨率像素选择性地重新分类为不在图像的平滑区域中的逻辑。 该装置包括被配置为基于高分辨率像素是否保持分类为处于图像的平滑区域来选择性地过滤高分辨率像素的逻辑。
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