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1. 发明授权

US06600518B1 Adaptive clipping prevention for picture sharpness enhancement 有权
标题翻译：自适应剪辑防止图像锐度增强
公开(公告)号：US06600518B1
公开(公告)日：2003-07-29
申请号：US09706669
申请日：2000-11-06
申请人： Michael Bakhmutsky , Johan G. Janssen , Egbert G. T. Jaspers
发明人： Michael Bakhmutsky , Johan G. Janssen , Egbert G. T. Jaspers
IPC分类号： H04N521
CPC分类号： H04N5/208
摘要： A contrast control and clipping device is configured to determine a maximum range of enhancement that may be applied to each pixel for picture sharpness enhancement. This maximum range is used to limit the enhancement that is determined by the conventional convolution kernel and gain control modules. Preferably, the maximum range is independent of the determined convolution value, thereby minimizing the bandwidth requirements among the modules used for picture sharpness enhancement. The reduced bandwidth requirement allows for an efficient partitioning of tasks between hardware and software embodiments, and eases the overall system design task. In a multi-media application, the amount of data that is transferred between the processor and sub-components is substantially reduced, and the efficient partitioning facilitates parallel processing. The maximum range of enhancement is determined based on the pixel values in the current field, using a computationally simple algorithm, thereby minimizing anomalies caused by temporal dependencies among the modules that are used for picture sharpness enhancement. Additionally, the sharpness enhancement is dynamically adjusted based on overall picture-level characteristics, including the average enhancement range, overall noise measures, and so on.
摘要翻译：对比度控制和剪辑装置被配置为确定可以应用于每个像素的图像锐度增强的最大增强范围。该最大范围用于限制由常规卷积核和增益控制模块确定的增强。优选地，最大范围与确定的卷积值无关，从而最小化用于图像锐度增强的模块之间的带宽要求。减少的带宽要求允许在硬件和软件实施例之间有效地划分任务，并且简化整个系统设计任务。在多媒体应用中，在处理器和子组件之间传送的数据量大大减少，有效分区便于并行处理。使用计算简单的算法，基于当前场中的像素值来确定增强的最大范围，从而最小化用于图像锐度增强的模块之间由时间依赖性引起的异常。另外，锐度增强是基于整体图像级特性进行动态调整的，包括平均增强范围，整体噪声测量等。

2. 发明授权

US06674484B1 Video sample rate conversion to achieve 3-D effects 失效
标题翻译：视频采样率转换达到3-D效果
公开(公告)号：US06674484B1
公开(公告)日：2004-01-06
申请号：US09593839
申请日：2000-06-14
申请人： Liza G. Boland , Johan G. Janssen
发明人： Liza G. Boland , Johan G. Janssen
IPC分类号： H04N701
CPC分类号： G06T3/00 , H04N5/2628
摘要： The two dimensional sample rate conversion capabilities of a video display system are used to produce three-dimensional effects. Linear and non-linear scaling is applied to a video image to convey a sense of depth. The three dimensional effects are used to increase the visual appeal of existing and new feature sets in display systems. A multi-faceted object representation, such as a representation of a cube or a pyramid, can be used to display different video images on each facet of the representation. By appropriately scaling each image on each facet, an impression of depth is achieved. The images on the different facets can be selected to represent different aspects of a common theme, such as datacast information related to a primary source of information. Channel changing on a television can be presented as a rotation of the multifaceted object. In like manner, other familiar representations, such as a representation of a book can be used, wherein channel changing is presented as a turning of the pages of the book, each television program being presented on a different page. Advanced features, such as program categorization, can be represented as tabs on the book that facilitate the selection of a particular category. In like manner, a rotation of a multifaceted object about one axis may correspond to a change of channel within a select category, whereas a rotation about another axis may correspond to a change of category. Techniques are presented for achieving these three dimensional effects with calculations that are well suited for execution via the sample rate converters of conventional display systems.
摘要翻译：视频显示系统的二维采样率转换功能用于产生三维效果。线性和非线性缩放应用于视频图像以传达深度感。三维效果用于增加显示系统中现有和新功能集的视觉吸引力。可以使用多面对象表示，例如立方体或金字塔的表示，以在表示的每个方面显示不同的视频图像。通过适当地缩放每个刻面上的每个图像，实现深度的印象。可以选择不同方面的图像来表示共同主题的不同方面，例如与主要信息源相关的数据广播信息。电视上的频道改变可以被呈现为多方面对象的旋转。以类似的方式，可以使用其他熟悉的表示，例如书的表示，其中，频道改变被呈现为书的页面的转动，每个电视节目被呈现在不同的页面上。高级功能（如程序分类）可以表示为便于选择特定类别的书上的选项卡。以相似的方式，多面体物体围绕一个轴线的旋转可对应于选择类别内的通道的变化，而围绕另一轴线的旋转可对应于类别的变化。提出了通过经常通过显示系统的采样率转换器执行的计算来实现这些三维效果的技术。

3. 发明授权

US06950561B2 Method and system for sharpness enhancement for coded video 失效
标题翻译：用于编码视频锐度增强的方法和系统
公开(公告)号：US06950561B2
公开(公告)日：2005-09-27
申请号：US09976340
申请日：2001-10-12
申请人： Lilla Boroczky , Johan G. Janssen
发明人： Lilla Boroczky , Johan G. Janssen
IPC分类号： H04N5/208 , H04N7/26 , G06K9/40
CPC分类号： H04N5/208
摘要： A system, (i.e., a method, an apparatus, and computer-executable process steps), providing sharpness enhancement for coded video, in which a usefulness metric, calculates how much a pixel can be enhanced without increasing coding artifacts. The usefulness metric is separate from the enhancement algorithm such that a variety of different enhancement algorithms can be used in conjunction with the metric.
摘要翻译：为编码视频提供清晰度增强的系统（即，方法，装置和计算机可执行处理步骤），其中有用度量可以计算可以在不增加编码伪像的情况下增强像素的数量。有用性度量与增强算法分离，使得可以结合该度量使用各种不同的增强算法。

4. 发明授权

US07116712B2 Apparatus and method for parallel multimedia processing 有权
公开(公告)号：US07116712B2
公开(公告)日：2006-10-03
申请号：US10003062
申请日：2001-11-02
申请人： Rob Vogelaar , Johan G. Janssen , Fons Bruls
发明人： Rob Vogelaar , Johan G. Janssen , Fons Bruls
IPC分类号： H04N7/18
CPC分类号： H04N21/234354 , H04N21/234327 , H04N21/2389 , H04N21/42607 , H04N21/4385
摘要： An apparatus and method for processing a multimedia digital bitstream is disclosed. The apparatus comprises a processing chain made up of a plurality of media processors. Each media processor processes a portion of the multimedia digital bitstream in real time. Each portion of the multimedia digital bitstream is split into a primary bitstream and a secondary bitstream. The primary bitstream is processed and merged with the unprocessed secondary bitstream. The parallel processing method of the present invention enables the processing chain to output a fully processed bitstream in real time. The processing chain may be used to transcode a high definition (HD) video bitstream in real time using a plurality of bitrate transcoder units.

5. 发明授权

US06600495B1 Image interpolation and decimation using a continuously variable delay filter and combined with a polyphase filter 失效
标题翻译：使用连续可变延迟滤波器并与多相滤波器组合的图像插值和抽取
公开(公告)号：US06600495B1
公开(公告)日：2003-07-29
申请号：US09632755
申请日：2000-08-04
申请人： Liza G. Boland , Johan G. Janssen
发明人： Liza G. Boland , Johan G. Janssen
IPC分类号： G09G502
CPC分类号： G06T3/4023
摘要： A filter structure is provided that facilitates the use of the filter as either a continuous delay Farrow filter or a selectable delay polyphase filter. The less complex polyphase filter is used when the desired scale substantially corresponds to a defined phase of the polyphase filter, or when time or power is not available to achieve the desired scale exactly; otherwise, the continuous delay Farrow filter is used. By providing an ability to switch to a continuous delay, the number of stages of the polyphase filter can be reduced. Additionally, an inversion of a Farrow filter is presented that provides for a continuous delay decimation filter with substantially reduced computational complexity compared to a direct embodiment of a Farrow filter. This inverted filter is also configurable as a polyphase filter, to provide selectable scale-resolution capabilities.
摘要翻译：提供了一种滤波器结构，其有助于将滤波器用作连续延迟Farrow滤波器或可选择的延迟多相滤波器。当所需刻度基本上对应于多相滤波器的限定相位时，或者当时间或功率不可用以精确达到所需尺度时，使用较不复杂的多相滤波器。否则，使用连续延迟Farrow滤波器。通过提供切换到连续延迟的能力，可以减少多相滤波器的级数。另外，与Farrow滤波器的直接实施例相比，呈现了Farrow滤波器的反演，其提供了具有显着降低的计算复杂度的连续延迟抽取滤波器。该反相滤波器也可配置为多相滤波器，以提供可选择的分辨率分辨率。

6. 发明授权

US06903782B2 System and method for performing segmentation-based enhancements of a video image 有权
标题翻译：用于执行视频图像的基于分段的增强的系统和方法
公开(公告)号：US06903782B2
公开(公告)日：2005-06-07
申请号：US09819360
申请日：2001-03-28
申请人： Stephen Herman , Johan G. Janssen
发明人： Stephen Herman , Johan G. Janssen
IPC分类号： H04N5/14 , H04N9/64 , H04N19/85
CPC分类号： H04N19/85 , G06T5/001 , G06T7/11 , G06T7/143
摘要： There is disclosed an apparatus for performing segmentation-based enhancements of a video image. The apparatus comprises: 1) an input buffer for storing video frames of an incoming video signal; 2) a segmentation controller capable of segmenting a first stored frame into a plurality of segments, each of the plurality of segments comprising a plurality of pixels having at least one common property; 3) an image processor capable of calculating a probability function associated with at least one pixel in the first stored frame, the probability function indicating a probability that the at least one pixel belongs within a first selected one of the plurality of segments; and 4) an enhancement controller capable of enhancing a parameter of the at least one pixel as a function of the probability function of the at least one pixel.
摘要翻译：公开了一种用于执行视频图像的基于分段的增强的装置。该装置包括：1）用于存储输入视频信号的视频帧的输入缓冲器; 2）分段控制器，其能够将第一存储的帧分割成多个段，所述多个段中的每一个段包括具有至少一个共同属性的多个像素; 3）能够计算与第一存储帧中的至少一个像素相关联的概率函数的图像处理器，所述概率函数指示所述至少一个像素属于所述多个片段中的第一选定的一个片段中的概率; 以及4）增强控制器，其能够根据所述至少一个像素的概率函数增强所述至少一个像素的参数。

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