公开(公告)号：US08879863B1

公开(公告)日：2014-11-04

申请号：US13888802

申请日：2013-05-07

Applicant: Qualcomm Technologies, Inc.

Inventor： Christophe Bernard ,  Sarah Lannes

IPC: G06K9/36 ,  G06T5/00

CPC classification number: G06T5/002 ,  G06T7/0002 ,  G06T2207/10024 ,  G06T2207/20016 ,  G06T2207/20021 ,  G06T2207/20064 ,  G06T2207/20182 ,  G06T2207/30168

Abstract: A method for determining noise levels in a subband of an image. The method comprises receiving the subband of the image, defining block regions in at least two space domains of the subband, for each defined block region, identifying first wavelet coefficients associated with coordinate values in the at least two space domains in the defined block region, computing a correlation matrix between identified wavelet coefficients to determine the correlation between first wavelet coefficients according to the at least one color domain, computing second wavelet coefficients, the computation of second wavelet coefficients being based on the correlation matrix and the first wavelet coefficients, computing at least one noise level, the noise level computation being based on at least one second wavelet coefficient and providing the at least one noise level.

Abstract translation: 一种用于确定图像的子带中的噪声水平的方法。 该方法包括接收图像的子带，为每个定义的块区域定义子带的至少两个空间域中的块区域，识别与所定义的块区域中的至少两个空间域中的坐标值相关联的第一小波系数， 计算确定的小波系数之间的相关矩阵，以确定根据至少一个色域的第一小波系数之间的相关性，计算第二小波系数，基于相关矩阵的第二小波系数的计算和第一小波系数， 至少一个噪声电平，所述噪声电平计算基于至少一个第二小波系数并提供所述至少一个噪声电平。

公开(公告)号：US20140095809A1

公开(公告)日：2014-04-03

申请号：US13941483

申请日：2013-07-13

Applicant: QUALCOMM TECHNOLOGIES, INC.

Inventor： Laurent MOLL ,  Jean-Jacques Lecler ,  Jonah Proujansky-Bell

IPC: G06F12/08

CPC classification number: G06F12/0831

Abstract: A coherency controller with a data buffer store that is smaller than the volume of pending read data requests. Data buffers are allocated only for requests that match the ID of another pending request. Buffers are deallocated if all snoops receive responses, none of which contain data. Buffers containing clean data have their data discarded and are reallocated to later requests. The discarded data is later read from the target. When all buffers are full of dirty data requests with a pending order ID are shunted into request queues for later service. Dirty data may be foisted onto coherent agents to make buffers available for reallocation. Accordingly, the coherency controller can issue snoops and target requests for a volume of data that exceeds the number of buffers in the data store.

Abstract translation: 具有数据缓冲存储器的一致性控制器，其小于待处理的读取数据请求的数量。 数据缓冲区仅分配给与另一待处理请求的ID匹配的请求。 如果所有的snoops都收到响应，那么缓冲区被解除分配，其中没有一个包含数据。 包含干净数据的缓冲区会丢弃其数据，并将其重新分配给以后的请求。 丢弃的数据随后从目标读取。 当所有缓冲区充满了具有待处理订单ID的脏数据请求时，它们被分流到请求队列中以供稍后服务。 脏数据可能会被阻塞到相关代理上，以使缓冲区可用于重新分配。 因此，一致性控制器可以对超过数据存储器中的缓冲器数量的数据量发出窥探和目标请求。