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    • 8. 发明授权
    • System and method for lossless image compression
    • 无损图像压缩的系统和方法
    • US5680129A
    • 1997-10-21
    • US503792
    • 1995-07-18
    • Marcelo WeinbergerGadiel SeroussiGuillermo Sapiro
    • Marcelo WeinbergerGadiel SeroussiGuillermo Sapiro
    • H04N7/32G06T9/00H03M7/36H03M7/42H04N1/41H04N7/34H03M7/30
    • H04N19/593H04N19/13H04N19/91
    • A lossless image compression encoder/decoder system having a context determination circuit and a code table generator. The image compressor uses the context of a pixel to be encoded to predict the value of the pixel and determines a prediction error. The image compressor contains a context quantizer that quantizes the context of pixels. The image compressor counts the error values for each quantized context and uses these counts to generate context-specific coding tables for each quantized context. As it encodes a particular pixel, the encoder looks up the prediction error in the context-specific coding table for the context of the pixel and encodes that value. To decompress an image, the decompressor determines and quantizes the context of each pixel being decoded. The decompressor uses the same pixels as the compressor to determine the context. The decompressor retrieves from the context-specific coding table the error value corresponding to the coded pixel. The decompressor uses a predictor to predict the value of the pixel based on the context and adds the error value to determine the actual value of the pixel. In one embodiment the image compressor uses an alphabet extension, embedded in its context model, in specific low gradient contexts to reduce the redundancy of the encoding. Other systems and methods are disclosed.
    • 一种具有上下文确定电路和码表发生器的无损图像压缩编码器/解码器系统。 图像压缩器使用要编码的像素的上下文来预测像素的值并确定预测误差。 图像压缩器包含量化像素上下文的上下文量化器。 图像压缩器对每个量化上下文的误差值进行计数,并使用这些计数为每个量化上下文生成上下文特定的编码表。 当编码特定像素时,编码器在上下文特定编码表中查找像素的上下文的预测误差,并对该值进行编码。 为了解压缩图像,解压缩器确定并量化正在解码的每个像素的上下文。 解压缩器使用与压缩器相同的像素来确定上下文。 解压缩器从上下文特定编码表中检索对应于编码像素的误差值。 解压缩器使用预测器根据上下文预测像素的值,并添加误差值以确定像素的实际值。 在一个实施例中,图像压缩器在特定的低梯度上下文中使用嵌入其上下文模型中的字母扩展,以减少编码的冗余度。 公开了其它系统和方法。
    • 9. 发明授权
    • Fast image and video data propagation and blending using intrinsic distances
    • 使用固有距离的快速图像和视频数据传播和混合
    • US07672509B2
    • 2010-03-02
    • US11415804
    • 2006-05-02
    • Liron YatzivGuillermo Sapiro
    • Liron YatzivGuillermo Sapiro
    • G06K9/36
    • G06T11/001G06T5/005
    • Images are colorized, recolorized, or otherwise manipulated by adding scribbles of a blending medium (such as chrominance) to a measurement medium (such as luminance) of the image. The blending medium propagates from the scribbles according to an intrinsic or geodesic distance that is a function of the measurement medium. Intrinsic distances may be weighted. An effect scribble may produce an effect, such as result data, in the blending medium according to a predefined function. A preprocessing scribble may be converted to one or more effect scribbles which are then propagated. A measurement scribble may propagate so as to alter the intrinsic distances of other scribbles.
    • 通过将混合介质(例如色度)的涂抹添加到图像的测量介质(例如亮度)上,将图像着色,再着色或以其它方式操纵。 混合介质根据作为测量介质的函数的固有或测地距离从涂鸦传播。 本征距离可以加权。 效果涂鸦可以根据预定义的功能在混合介质中产生诸如结果数据的效果。 预处理涂鸦可以转换成一个或多个效果涂鸦,然后传播。 测量涂鸦可以传播,以便改变其他涂鸦的固有距离。
    • 10. 发明申请
    • Fast image and video data propagation and blending using intrinsic distances
    • 使用固有距离的快速图像和视频数据传播和混合
    • US20060245645A1
    • 2006-11-02
    • US11415804
    • 2006-05-02
    • Liron YatzivGuillermo Sapiro
    • Liron YatzivGuillermo Sapiro
    • G06K9/00
    • G06T11/001G06T5/005
    • Images are colorized, recolorized, or otherwise manipulated by adding scibbles of a blending medium (such as chrominance) to a measurement medium (such as luminance) of the image. The blending medium propagates from the scribbles according to an intrinsic or geodesic distance that is a function of the measurement medium. Intrinsic distances may be weighted. An effect scribble may produce an effect, such as result data, in the blending medium according to a predefined function. A preprocessing scribble may be converted to one or more effect scribbles which are then propagated. A measurement scribble may propagate so as to alter the intrinsic distances of other scribbles.
    • 通过将混合介质(例如色度)的模糊添加到图像的测量介质(例如亮度)来对图像进行着色,再着色或以其它方式操纵。 混合介质根据作为测量介质的函数的固有或测地距离从涂鸦传播。 本征距离可以加权。 效果涂鸦可以根据预定义的功能在混合介质中产生诸如结果数据的效果。 预处理涂鸦可以转换成一个或多个效果涂鸦,然后传播。 测量涂鸦可以传播,以便改变其他涂鸦的固有距离。