YUV视频阅读程序源码程序 - vb源码程序

下载频道> 资源分类> 编程语言> VB源码> YUV视频阅读程序源码程序

标题：YUV视频阅读程序源码程序
分享到：

所属分类: VB源码资源类型：文件大小: 20 KB 上传时间: 2016-01-30 19:52:31 下载次数: 14 资源积分：1分提供者: 源码共享 YUV视频阅读程序源码程序

内容：
YUV视频阅读程序源码程序，程序员在编程的过程中可以参考学习使用，希望对IT程序员有用，此源码程序简单易懂、方便阅读，有很好的学习价值！

function rgb=yuv2rgb(Y,U,V,yuvformat,convmtrx)

%Converts YUV to RGB

%rgb=yuv2rgb(Y,U,V,yuvformat,convmtrx)

%Input:

% Y,U,V - Y,U and V components of the frame

% yuvformat - YUV format [optional, default = 'YUV420_8']. See in rgb2yuv.m

% for supported YUV subsampling formats.

% convmtrx - Conversion matrix [optional, default = 'BT709_l']. The

% following conversions ase defined. See in rgb2yuv.m

% for more details.

%Output:

% rgb - RGB 3D matrix. rgb(:,:,1), rgb(:,:,2) and rgb(:,:,3) are R, G and

% B components, respectively.

%Uses:

% imresize.m - Matlab Image Processing Toolbox

%Note:

% When the input format has the chroma subsampled (e.g. 4:2:0 format),

% upsampling is employed on the chroma components before the conversion

% takes place.

% See in the help of rgb2yuv.m for details on coversion options.

% ITU-R BT.601, RGB full range, results in the following transform matrix:

% 1.164 0.000 1.596

% 1.164 -0.392 -0.813

% 1.164 2.017 0.000

% ITU-R BT.601, RGB limited range, results in the following transform matrix:

% 1.000 0.000 1.402

% 1.000 -0.344 -0.714

% 1.000 1.772 0.000

% ITU-R BT.709, RGB limited range, results in the following transform matrix:

% 1.000 0.000 1.570

% 1.000 -0.187 -0.467

% 1.000 1.856 0.000

%Example:

% rgb = yuv2rgb(Y,U,V);

if (nargin < 4)

yuvformat = 'YUV420_8';

end;

if (nargin < 5)

convmtrx = 'BT709_l';

end;

if (strcmp(yuvformat,'YUV420_8') && (exist('imresize','file') ~= 2))

error('For YUV420 subsampling yuv2rgb requires Image Processing Toolbox (TM) function imresize!');

end;

if strcmp(convmtrx,'BT601_f')

load('BT601_f.mat','-mat');

elseif strcmp(convmtrx,'BT601_l')

load('BT601_l.mat','-mat');

elseif strcmp(convmtrx,'BT601_219')

load('BT601_219.mat','-mat');

elseif strcmp(convmtrx,'BT709_f')

load('BT709_f.mat','-mat');

elseif strcmp(convmtrx,'BT709_l')

load('BT709_l.mat','-mat');

end;

%create the 3D YUV array

yuv = zeros(size(Y,1),size(Y,2),3);

if (strcmp(yuvformat,'YUV420_8'))

yuv(:,:,1) = double(Y);

yuv(:,:,2) = imresize(double(U),2,'bicubic');

yuv(:,:,3) = imresize(double(V),2,'bicubic');

elseif (strcmp(yuvformat,'YUV444_8'))

yuv(:,:,1) = double(Y);

yuv(:,:,2) = double(U);

yuv(:,:,3) = double(V);

end;

%inversion of the transform matrix

T = inv(rgb2yuvT);

rgb = zeros(size(Y,1),size(Y,2),3);

if (yuvoffset(1) ~= 0)

yuv(:,:,1) = yuv(:,:,1) - yuvoffset(1);

end;

if (yuvoffset(2) ~= 0)

yuv(:,:,2) = yuv(:,:,2) - yuvoffset(2);

end;

if (yuvoffset(3) ~= 0)

yuv(:,:,3) = yuv(:,:,3) - yuvoffset(3);

end;

rgb(:,:,1) = T(1,1) * yuv(:,:,1) + T(1,2) * yuv(:,:,2) + T(1,3) * yuv(:,:,3);

rgb(:,:,2) = T(2,1) * yuv(:,:,1) + T(2,2) * yuv(:,:,2) + T(2,3) * yuv(:,:,3);

rgb(:,:,3) = T(3,1) * yuv(:,:,1) + T(3,2) * yuv(:,:,2) + T(3,3) * yuv(:,:,3);

rgb = uint8(round(rgb));

文件列表（点击上边下载按钮，如果是垃圾文件请在下面评价差评或者投诉）:

关键词：程序源码 程序 视频

编程语言下载排行

回到顶部

友情链接

matlab源码网站源码编程语言网络编程手机通讯编程 KUNAG 官网 KUNAG 电商更多

: 联系方式| 版权声明| 招聘信息| 广告服务| 银行汇款| 法律顾问| 兼职技术| 付款方式| 关于我们|; 网站客服程序员兼职招聘 411241577@qq.com; 沪ICP备19040327号-3; 公安备案号：沪公网安备 31011802003874号; 库纳格流体控制系统（上海）有限公司版权所有; Copyright © 1999-2014, GUSUCODE.COM, All Rights Reserved

关键词： 程序源码 程序 视频

相关推荐

编程语言下载排行

友情链接

关键词：程序源码程序视频