MAPPING PSYCHO-VISUAL CHARACTERISTICS IN MEASURING SHARPNESS FEATURE AND BLURRING ARTIFACTS IN VIDEO STREAMS
    2.
    发明申请
    MAPPING PSYCHO-VISUAL CHARACTERISTICS IN MEASURING SHARPNESS FEATURE AND BLURRING ARTIFACTS IN VIDEO STREAMS 有权
    映射PSYCHO视觉特性在视频流中测量锐度特征和曝光艺术

    公开(公告)号:US20110069142A1

    公开(公告)日:2011-03-24

    申请号:US12566633

    申请日:2009-09-24

    IPC分类号: H04N7/15 G06K9/00

    摘要: A block-based, no-reference sharpness metric is provided taking advantage of Human Visual System (HVS) characteristics. Texture and smooth region blocks are excluded in computing the metric since sharpness is perceived mostly around edges. Overall sharpness metric is computed by pooling simulated combination of information in human brain employing a logistic function to replicate the behavior of HVS.

    摘要翻译: 利用人类视觉系统(HVS)特征提供基于块的无参考锐度度量。 在计算公制时排除纹理和平滑区域块,因为锐度主要在边缘周围感知。 通过使用逻辑函数将人脑中的信息的模拟组合汇集以复制HVS的行为来计算总体清晰度度量。

    MIMICKING HUMAN VISUAL SYSTEM IN DETECTING BLOCKINESS ARTIFACTS IN COMPRESSED VIDEO STREAMS
    3.
    发明申请
    MIMICKING HUMAN VISUAL SYSTEM IN DETECTING BLOCKINESS ARTIFACTS IN COMPRESSED VIDEO STREAMS 有权
    检测压缩视频流中的阻塞性疾病的人体视觉系统

    公开(公告)号:US20110069138A1

    公开(公告)日:2011-03-24

    申请号:US12566590

    申请日:2009-09-24

    IPC分类号: H04N7/64 H04N7/15 H04N17/02

    摘要: A low complexity block-based, no-reference objective blockiness metric is provided that may be combined with other artifact metrics to measure overall quality of received video stream in a video conferencing application such that measures can be taken at the transmitter or in post-processing to enhance video quality. Prior knowledge of the blockiness boundaries may be used to reduce number of computations in determining the blockiness of a particular video frame.

    摘要翻译: 提供了一种低复杂度的基于块的,不参考的目标阻塞度量,其可以与其他伪像度量相结合以测量视频会议应用中的接收视频流的总体质量,从而可以在发射机处或在后处理 提高视频质量。 块确定边界的先验知识可用于减少确定特定视频帧的阻塞性的计算次数。

    OPTIMIZED ALLOCATION OF MULTI-CORE COMPUTATION FOR VIDEO ENCODING
    4.
    发明申请
    OPTIMIZED ALLOCATION OF MULTI-CORE COMPUTATION FOR VIDEO ENCODING 有权
    用于视频编码的多核心计算的优化分配

    公开(公告)号:US20100296575A1

    公开(公告)日:2010-11-25

    申请号:US12470236

    申请日:2009-05-21

    IPC分类号: H04N11/04

    摘要: Video encoding computations are optimized by dynamically adjusting slice patterns of video frames based on complexity of each frame and allocating multi-core threading based on the slices. The complexity may be based on predefined parameters such as color, motion, and comparable ones for each slice. Allocation is determined based on capacity and queue of each processing core such that overall computation performance for video encoding is improved.

    摘要翻译: 通过基于每个帧的复杂度动态调整视频帧的切片模式并基于片分配多核线程来优化视频编码计算。 复杂性可以基于预定义的参数,例如颜色,运动和每个切片的可比较的参数。 基于每个处理核心的容量和队列来确定分配,使得用于视频编码的整体计算性能得到改善。

    Constructing Forward Error Correction Codes
    5.
    发明申请
    Constructing Forward Error Correction Codes 审中-公开
    构建前向纠错码

    公开(公告)号:US20100153822A1

    公开(公告)日:2010-06-17

    申请号:US12335496

    申请日:2008-12-15

    IPC分类号: H03M13/05 G06F11/10

    摘要: Construction and use of forward error correction codes is provided. A systematic MDS FEC code is obtained having a property wherein any set of contiguous or non-contiguous r packets can be lost during a data transmission of k data packets and r encoded packets and the original k packets can be recovered unambiguously. The systematic MDS FEC code is transformed into a (k+r, k) systematic MDS FEC code that guarantees at least one of the encoded packets is a parity packet. The starting systematic MDS FEC code may be Cauchy-based, and the transformation code derived from the starting Cauchy-based MDS FEC code allows for very efficient initialization, encoding and decoding operations.

    摘要翻译: 提供前向纠错码的构造和使用。 获得具有属性的系统MDS FEC代码,其中在k个数据分组和r个编码分组的数据传输期间可能丢失任何一组连续的或不连续的r分组,并且可以明确地恢复原始k个分组。 系统MDS FEC码被变换为(k + r,k)系统MDS FEC码,其保证编码分组中的至少一个是奇偶校验分组。 起始的系统MDS FEC码可以是基于Cauchy的,并且从起始的基于Cauchy的MDS FEC码导出的变换码允许非常有效的初始化,编码和解码操作。