PERCEPTUAL BLOCK MASKING ESTIMATION SYSTEM
    1.
    发明申请
    PERCEPTUAL BLOCK MASKING ESTIMATION SYSTEM 有权
    PERCEPTUAL BLOCK MASKING ESTIMATION系统

    公开(公告)号:US20120170864A1

    公开(公告)日:2012-07-05

    申请号:US13332949

    申请日:2011-12-21

    IPC分类号: G06K9/40

    摘要: Systems and methods are disclosed for determining the perceptibility of noise in a block of images and/or video. The systems and methods may compute a mask value for the block using a block masking generator. The mask value may indicate the perceptibility of noise in the block. The mask value may be computed using a normalized activity value and/or a texture value for the block. The normalized activity value may indicate the relative activity in the block as compared to the activity in the image and/or video. The texture value may indicate the strength and/or number of edges in the block.

    摘要翻译: 公开了用于确定图像和/或视频块中的噪声的感知性的系统和方法。 系统和方法可以使用块掩码生成器来计算块的掩码值。 掩模值可以指示块中的噪声的可感知性。 可以使用归一化活动值和/或块的纹理值来计算掩模值。 与图像和/或视频中的活动相比,归一化活动值可以指示块中的相对活动。 纹理值可以指示块中的边缘的强度和/或数量。

    FRAME LEVEL QUANTIZATION ESTIMATION
    2.
    发明申请
    FRAME LEVEL QUANTIZATION ESTIMATION 审中-公开
    帧水平量化估计

    公开(公告)号:US20120133836A1

    公开(公告)日:2012-05-31

    申请号:US12955188

    申请日:2010-11-29

    IPC分类号: H04N5/21

    摘要: A frame level noise estimate for an image can be determined. An image processor includes a high pass filter unit configured to perform high-pass spatial filtering of image data for first and second frames to produce high-pass spatially filtered information for the first frame and the second frame. A cumulative histogram generator is configured to analyze the high-pass spatially filtered information for the first frame and the second frame to produce a first cumulative histogram for the first frame and a second cumulative histogram for the second frame. A comparator is configured to determine a difference value between the first and second cumulative histograms. A mapping unit is configured to determine an estimated noise value based on the difference value.

    摘要翻译: 可以确定图像的帧级噪声估计。 图像处理器包括高通滤波器单元,其被配置为对第一和第二帧执行图像数据的高通空间滤波,以产生用于第一帧和第二帧的高通空间滤波信息。 累积直方图生成器被配置为分析第一帧和第二帧的高通空间滤波信息,以产生第一帧的第一累积直方图和第二帧的第二累积直方图。 比较器被配置为确定第一和第二累积直方图之间的差值。 映射单元被配置为基于该差值来确定估计的噪声值。

    Perceptual block masking estimation system
    3.
    发明授权
    Perceptual block masking estimation system 有权
    感知块掩蔽估计系统

    公开(公告)号:US08811766B2

    公开(公告)日:2014-08-19

    申请号:US13332949

    申请日:2011-12-21

    IPC分类号: G06K9/40 H04N7/26

    摘要: Systems and methods are disclosed for determining the perceptibility of noise in a block of images and/or video. The systems and methods may compute a mask value for the block using a block masking generator. The mask value may indicate the perceptibility of noise in the block. The mask value may be computed using a normalized activity value and/or a texture value for the block. The normalized activity value may indicate the relative activity in the block as compared to the activity in the image and/or video. The texture value may indicate the strength and/or number of edges in the block.

    摘要翻译: 公开了用于确定图像和/或视频块中的噪声的感知性的系统和方法。 系统和方法可以使用块掩码生成器来计算块的掩码值。 掩模值可以指示块中的噪声的可感知性。 可以使用归一化活动值和/或块的纹理值来计算掩模值。 与图像和/或视频中的活动相比,归一化活动值可以指示块中的相对活动。 纹理值可以指示块中的边缘的强度和/或数量。

    IMAGE DETAILS PRESERVATION AND ENHANCEMENT
    4.
    发明申请
    IMAGE DETAILS PRESERVATION AND ENHANCEMENT 有权
    图像细节保存和增强

    公开(公告)号:US20110181787A1

    公开(公告)日:2011-07-28

    申请号:US12695220

    申请日:2010-01-28

    申请人: Haiyun Wang Lucas Hui

    发明人: Haiyun Wang Lucas Hui

    IPC分类号: H04N5/14 H04N5/52

    CPC分类号: H04N5/202

    摘要: The appearance of image details can be preserved and/or enhanced by applying contrast adaptive gain to the high spatial frequency component of the luminance information. The image details in bright and/or dark regions can be further boosted by applying a local mean adaptive gain. The contrast transfer mapping curve for luminance contrast enhancement can be re-scaled to account for the applied gain. The re-scaling may be performed from frame to frame of displayed video. The re-scaling may be temporally controlled for subsequent frames to make the re-scaling change gradually to prevent flickering.

    摘要翻译: 可以通过对亮度信息的高空间频率分量应用对比度自适应增益来保持和/或增强图像细节的外观。 亮区和/或暗区的图像细节可以通过应用局部平均自适应增益进一步提升。 用于亮度对比度增强的对比度转移映射曲线可以重新缩放以考虑所应用的增益。 可以从显示视频的帧到帧执行重新缩放。 对于随后的帧可以暂时控制重新缩放以使得重新缩放逐渐变化以防止闪烁。

    General banding and codec banding artifact removal
    5.
    发明授权
    General banding and codec banding artifact removal 有权
    一般条带和编解码条纹伪影去除

    公开(公告)号:US08731323B2

    公开(公告)日:2014-05-20

    申请号:US13304118

    申请日:2011-11-23

    申请人: Haiyun Wang Lucas Hui

    发明人: Haiyun Wang Lucas Hui

    IPC分类号: G06K9/40

    摘要: A method and apparatus are disclosed for identifying and removing banding artifacts (i.e., false contours) resulting from insufficient bit depth caused by digital image quantization, conversion, and/or compression. This method includes: explicitly identifying texture block and flat block; de-termination of filter window sizes with the consideration of handling transitions between texture block and flat block; de-banding filtering with edge protection; and noise shaping according to de-banding filter result.

    摘要翻译: 公开了一种用于识别和去除由数字图像量化,转换和/或压缩引起的比特深度不足导致的带状伪影(即假轮廓)的方法和装置。 该方法包括:明确识别纹理块和平块; 考虑处理纹理块和平块之间的过渡的过滤器窗口尺寸的解除终止; 边缘保护去带滤波; 并根据去带滤波器的结果进行噪声整形。

    Image details preservation and enhancement
    6.
    发明授权
    Image details preservation and enhancement 有权
    图像细节保存和增强

    公开(公告)号:US08781248B2

    公开(公告)日:2014-07-15

    申请号:US12695220

    申请日:2010-01-28

    申请人: Haiyun Wang Lucas Hui

    发明人: Haiyun Wang Lucas Hui

    IPC分类号: G06T5/00 G06T5/40 G06T5/50

    CPC分类号: H04N5/202

    摘要: The appearance of image details can be preserved and/or enhanced by applying contrast adaptive gain to the high spatial frequency component of the luminance information. The image details in bright and/or dark regions can be further boosted by applying a local mean adaptive gain. The contrast transfer mapping curve for luminance contrast enhancement can be re-scaled to account for the applied gain. The re-scaling may be performed from frame to frame of displayed video. The re-scaling may be temporally controlled for subsequent frames to make the re-scaling change gradually to prevent flickering.

    摘要翻译: 可以通过对亮度信息的高空间频率分量应用对比度自适应增益来保持和/或增强图像细节的外观。 亮区和/或暗区的图像细节可以通过应用局部平均自适应增益进一步提升。 用于亮度对比度增强的对比度转移映射曲线可以重新缩放以考虑所应用的增益。 可以从显示视频的帧到帧执行重新缩放。 对于随后的帧可以暂时控制重新缩放以使得重新缩放逐渐变化以防止闪烁。

    System and process for image rescaling with edge adaptive phase control in interpolation process
    8.
    发明授权
    System and process for image rescaling with edge adaptive phase control in interpolation process 有权
    在插值过程中利用边缘自适应相位控制进行图像重新调整的系统和过程

    公开(公告)号:US08098334B2

    公开(公告)日:2012-01-17

    申请号:US12406832

    申请日:2009-03-18

    IPC分类号: H04N5/21

    CPC分类号: G06T3/403 G06T2200/28

    摘要: A video image processing system is described that generates the interpolated video images with sharp and jaggedness-free edges. A method of video image processing is also described that interpolates video images to generate the video images with sharp and jaggedness-free edges. The video image processing system receives and makes input image data available for further processing; analyzes the local features of the input image data; filters the input image data before performing interpolation process; modifies the phase value adaptive to the local edge distance; rescales the input image data in horizontal interpolation using the modified phase value; and rescales the horizontally interpolated image data in vertical interpolation using modified phase value.

    摘要翻译: 描述了一种视频图像处理系统,其生成具有锐利和无锯齿边缘的内插视频图像。 还描述了一种视频图像处理方法,其内插视频图像以产生具有锐利和无锯齿边缘的视频图像。 视频图像处理系统接收并使输入图像数据可用于进一步处理; 分析输入图像数据的局部特征; 在进行插值处理之前对输入图像数据进行滤波; 修改自适应局部边缘距离的相位值; 使用修改的相位值在水平插值中调整输入图像数据; 并使用修改的相位值在垂直内插中重新调整水平内插图像数据。

    SYSTEM AND PROCESS FOR IMAGE RESCALING WITH EDGE ADAPTIVE PHASE CONTROL IN INTERPOLATION PROCESS
    10.
    发明申请
    SYSTEM AND PROCESS FOR IMAGE RESCALING WITH EDGE ADAPTIVE PHASE CONTROL IN INTERPOLATION PROCESS 有权
    用于边缘自适应相位控制的图像重建系统和过程

    公开(公告)号:US20090262247A1

    公开(公告)日:2009-10-22

    申请号:US12406832

    申请日:2009-03-18

    IPC分类号: G06K9/40 H04N5/21

    CPC分类号: G06T3/403 G06T2200/28

    摘要: A video image processing system is described that generates the interpolated video images with sharp and jaggedness-free edges. A method of video image processing is also described that interpolates video images to generate the video images with sharp and jaggedness-free edges. The video image processing system receives and makes input image data available for further processing; analyzes the local features of the input image data; filters the input image data before performing interpolation process; modifies the phase value adaptive to the local edge distance; rescales the input image data in horizontal interpolation using the modified phase value; and rescales the horizontally interpolated image data in vertical interpolation using modified phase value.

    摘要翻译: 描述了一种视频图像处理系统,其生成具有锐利和无锯齿边缘的内插视频图像。 还描述了一种视频图像处理方法,其内插视频图像以产生具有锐利和无锯齿边缘的视频图像。 视频图像处理系统接收并使输入图像数据可用于进一步处理; 分析输入图像数据的局部特征; 在进行插值处理之前对输入图像数据进行滤波; 修改自适应局部边缘距离的相位值; 使用修改的相位值在水平插值中调整输入图像数据; 并使用修改的相位值在垂直内插中重新调整水平内插图像数据。