公开(公告)号：US07254176B2

公开(公告)日：2007-08-07

申请号：US10443804

申请日：2003-05-23

Applicant: Yung-Ching Chang ,  Jo-Tan Yao ,  Kuo-Ping Hsu

Inventor： Yung-Ching Chang ,  Jo-Tan Yao ,  Kuo-Ping Hsu

IPC: H04N7/18

CPC classification number: H04N19/152 ,  H04N19/124 ,  H04N19/149 ,  H04N19/15 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61

Abstract: An apparatus for variable bit rate control in moving picture compression. First, a total activity measure for the current picture to be encoded in a set of consecutive pictures is calculated. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. A statistical complexity measure is then calculated from the complexity measure of the current picture. A target bit budget is allocated to the current picture depending on the instantaneous rate, the complexity measure and the instantaneous complexity measure. After encoding the current picture, the activity-to-complexity ratio for the current picture is computed based on the total activity measure, actual bits consumed by the current picture and an average of actual quantization step sizes used to encode the current picture.

Abstract translation: 一种用于运动图像压缩中可变比特率控制的装置。 首先，计算在一组连续图像中编码的当前图像的总活动度量。 基于当前图像的总活动度量和连续图像集合中相同类型的先前编码图像的活动与复杂度比，估计当前图像的复杂度度量。 然后从当前图片的复杂度测量中计算统计复杂度度量。 目标比特预算根据瞬时速率，复杂度测量和瞬时复杂度测量分配给当前图像。 在对当前画面进行编码之后，基于总活动度量，当前画面消耗的实际位数和用于编码当前画面的实际量化步长的平均值来计算当前画面的活动与复杂度比。

公开(公告)号：US20050207676A1

公开(公告)日：2005-09-22

申请号：US10708622

申请日：2004-03-16

Applicant: Wen-Kuo Lin ,  Kuo-Ping HSU

Inventor： Wen-Kuo Lin ,  Kuo-Ping HSU

IPC: G06K9/00 ,  G06K9/32 ,  G06T3/40

CPC classification number: G06T3/4023

Abstract: A method for decimating a first image data filtered by a Bayer pattern color filter array. The first image data includes a plurality of patterns arrayed in a matrix. Each pattern includes a first color pixel. The method includes providing first color pixel weighting values of the plurality of patterns of the first image data, and summing up the first color pixel weighting values to generate a first color pixel of a second image data decimated from the first image data.

Abstract translation: 一种用于抽取由拜耳图案彩色滤波器阵列滤波的第一图像数据的方法。 第一图像数据包括以矩阵排列的多个图案。 每个图案包括第一颜色像素。 该方法包括提供第一图像数据的多个图案的第一颜色像素加权值，以及对第一颜色像素加权值进行求和，以生成从第一图像数据抽取的第二图像数据的第一颜色像素。

公开(公告)号：US07133448B2

公开(公告)日：2006-11-07

申请号：US10289394

申请日：2002-11-07

Applicant: Yung-Ching Chang ,  Jo-Tan Yao ,  Kuo-Ping Hsu

Inventor： Yung-Ching Chang ,  Jo-Tan Yao ,  Kuo-Ping Hsu

IPC: H04N7/12 ,  H04B1/66

CPC classification number: H04N19/115 ,  H04N19/14

Abstract: A total activity measure for a current picture to be encoded in a set of consecutive pictures of a video sequence is calculated first. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. With the estimated complexity measure of the current picture, an instantaneous complexity measure for the set of consecutive pictures is updated. A target bit budget is allocated to the current picture depending on the estimated complexity measure and the instantaneous complexity measure. The current picture is encoded according to the target bit budget, and the activity-to-complexity ratio for the current picture is computed based on the total activity, actual bits consumed by the current picture, and the average quantization step size of the current picture.

Abstract translation: 首先计算要在视频序列的一组连续图像中编码的当前图像的总活动度量。 基于当前图像的总活动度量和连续图像集合中相同类型的先前编码图像的活动与复杂度比，估计当前图像的复杂度度量。 利用当前图像的估计复杂度测量，更新该组连续图像的瞬时复杂度度量。 目标比特预算根据估计的复杂度测量和即时复杂度测量分配给当前图片。 根据目标比特预算对当前图像进行编码，并且基于当前图像的总活动度，实际比特消耗的当前图像的平均量化步长以及当前图像的平均量化步长来计算当前图像的活动与复杂度比 。