Quantization control system for video coding
    1.
    发明授权
    Quantization control system for video coding 有权
    视频编码量化控制系统

    公开(公告)号:US07436890B2

    公开(公告)日:2008-10-14

    申请号:US10392392

    申请日:2003-03-20

    IPC分类号: H04N7/18

    摘要: The present invention provides a quantization control system for video coding, for optimizing bit allocation based on visual priority which expresses at high precision human visual characteristics for videos, thereby improving subjective image quality of the whole image even with a limited number of bits. An object is extracted from a picture of an input image (S1) and a gaze parameter V(j) for the extracted object is calculated (S2). Then, a texture attribute parameter t(k) of each macroblock included in the object is calculated (S3). The gaze parameter V(j) and texture attribute parameter t(k) are used to calculate a visual priority parameter w(k) for each macroblock. Based on this parameter w(k), a quantization parameter is determined.

    摘要翻译: 本发明提供了一种用于视频编码的量化控制系统,用于基于视觉优先级优化比特分配,其以高精度的人视觉特征表示视频,从而即使在有限位数的情况下也能提高整个图像的主观图像质量。 从输入图像的图像中提取对象(S 1),并计算提取对象的注视参数V(j)(S 2)。 然后,计算包含在对象中的每个宏块的纹理属性参数t(k)(S 3)。 注视参数V(j)和纹理属性参数t(k)用于计算每个宏块的视觉优先级参数w(k)。 基于该参数w(k),确定量化参数。

    Digital signal processor for musical tone synthesizers and the like
    2.
    发明授权
    Digital signal processor for musical tone synthesizers and the like 失效
    用于乐音合成器的数字信号处理器等

    公开(公告)号:US5614685A

    公开(公告)日:1997-03-25

    申请号:US279719

    申请日:1994-07-25

    CPC分类号: G10H7/004

    摘要: When a digital signal processor (i.e., DSP) performs a data processing on data stored in a memory (e.g., RAM) in accordance with instructions given from a CPU, data read/write controls are carried out with respect to the data transmitted between the DSP and memory. In accordance with built-in micro-programs, the DSP produces plural musical tone signals in time-division manner. When employing 32-bit data to be processed in the DSP, this 32-bit data is divided into four sets of 8-bit data, which are sequentially written in the memory, for example. Thereafter, the DSP reads such four sets of 8-bit data from the memory, and then, the DSP converts them into the 32-bit data, so that the DSP can perform the predetermined data processing on the converted 32-bit data. Thus, the DSP, employing M-bit data to be processed therein, can be freely coupled with the memory which stores N-bit data (where M.gtoreq.N), as long as "M" is equal to or a multiple of "N".

    摘要翻译: 当数字信号处理器(即,DSP)根据从CPU给出的指令对存储在存储器(例如,RAM)中的数据执行数据处理时,对于在CPU之间传送的数据执行数据读/写控制 DSP和内存。 根据内置的微程序,DSP以时分方式产生多个音乐信号。 当在DSP中使用32位数据进行处理时,该32位数据被划分为四组8位数据,例如顺序写入存储器。 此后,DSP从存储器中读取这4组8位数据,然后DSP将其转换为32位数据,以便DSP可对转换的32位数据执行预定数据处理。 因此,只要“M”等于或等于或等于或等于或等于或等于或等于或等于或等于或等于0的倍数,则可以使用存储N位数据(其中M> = N)的存储器自由地耦合使用要处理的M位数据的DSP “N”。