Read .seq file in MATLAB

Thanks for replying.Ya, i know..But some how when i am reading the header information then it is showing me these figures. I have this following code for header information:

clc
clear
fid = fopen('1.seq','r','b')
endianType = 'ieee-le';
%Reading Header Version
OFB = {28,1,'long'};
fseek(fid,OFB{1}, 'bof')
headerInfo.Version = fread(fid, OFB{2}, OFB{3}, endianType) %headerInfo is a structure
%Reading Header size
OFB = {32,1,'long'};
fseek(fid,OFB{1}, 'bof');
headerInfo.HeaderSize = fread(fid,OFB{2},OFB{3}, endianType)
%Reading Description Format
OFB = {592,1,'long'};
fseek(fid,OFB{1}, 'bof');
DescriptionFormat = fread(fid,OFB{2},OFB{3}, endianType)'
%Reading Byte Description
OFB = {36,512,'ushort'};
fseek(fid,OFB{1}, 'bof');
headerInfo.Description = fread(fid,OFB{2},OFB{3}, endianType)'
%Reading Image Information
OFB = {548,24,'uint32'};
fseek(fid,OFB{1}, 'bof');
tmp = fread(fid,OFB{2},OFB{3}, 0, endianType)
headerInfo.ImageWidth = tmp(1);
headerInfo.ImageHeight = tmp(2);
headerInfo.ImageBitDepth = tmp(3);
headerInfo.ImageBitDepthReal = tmp(4);
headerInfo.ImageSizeBytes = tmp(5);
vals = [0,100,101,200:100:900];
fmts = {'Unknown','Monochrome','Raw Bayer','BGR','Planar','RGB',...
  'BGRx', 'YUV422', 'UVY422', 'UVY411', 'UVY444'};
headerInfo.ImageFormat =[fmts{vals == tmp(6)}];
%Reading information about number of allocated frames
OFB = {572,1,'ushort'};
fseek(fid,OFB{1}, 'bof');
headerInfo.AllocatedFrames = fread(fid,OFB{2},OFB{3}, endianType);
%Reading information about origin
OFB = {576,1,'ushort'};
fseek(fid,OFB{1}, 'bof');
headerInfo.Origin = fread(fid,OFB{2},OFB{3}, endianType);
%Reading information about true image size i.e number of bytes between the
%first pixel of each successive images.
OFB = {580,1,'ushort'};
fseek(fid,OFB{1}, 'bof');
headerInfo.Origin = fread(fid,OFB{2},OFB{3}, endianType);
%Reading True Image Size
OFB = {580,1,'ulong'};
fseek(fid,OFB{1}, 'bof');
headerInfo.TrueImageSize = fread(fid,OFB{2},OFB{3}, endianType);
%Reading information about fps
OFB = {584,8,'double'};
fseek(fid,OFB{1}, 'bof');
headerInfo.FrameRate = fread(fid,OFB{2},OFB{3}, endianType)

When i run this, i get the following header information: headerInfo =

              Version: 0
           HeaderSize: 36629
          Description: [1x512 double]
           ImageWidth: 404166936
          ImageHeight: 522198298
        ImageBitDepth: 572531232
    ImageBitDepthReal: 639771172
       ImageSizeBytes: 606348324
          ImageFormat: []
      AllocatedFrames: 9765
               Origin: 10280
        TrueImageSize: 673654824
            FrameRate: [8x1 double]

Any suggestions?

Walter Roberson 2012-9-14

There must be a problem in reading the header. The ImageWidth shown there happens to correspond to hex 0x18171918 which is entirely too regular to be an accident.

Walter Roberson 2019-5-7

See also https://www.mathworks.com/matlabcentral/fileexchange/68341-readcompressedjpegseq

请先登录，再进行评论。

Answer 2

Davide Ferraro 2012-9-11

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/47877-read-seq-file-in-matlab#answer_58480

On page: http://people.cs.uchicago.edu/~dinoj/matlab/

There are some routines for working with .seq files in MATLAB. I've not been able to test them.

2 个评论
显示无隐藏无

kittu 2012-9-12

Hi, Thanks for reply.Unfortunately none of those codes are working. I guess those codes are meant for reading the sequential files which are often generated during the sequence analysis of DNA/RNA etc which are text files. But in my case, these .seq files are raw video files.

I am unable to read this file in MATLAB using any of the reader. Please provide some solution. Thanks

Julian Marstaller 2017-11-24

在 MATLAB Online 中打开

hey kittu,

i have the same issue currently. did you solve your problem already?

Thanks!

Here is our file output:

                 width: 1920
                height: 1080
         imageBitDepth: 12
     imageBitDepthReal: 12
        imageSizeBytes: 3110400
           imageFormat: 630
             numFrames: 239
         trueImageSize: 3112960
                   fps: 25.1130
            seqVersion: 5
                 codec: 'imageFormat630'
                 descr: 'StreamPix 6.5.0.0 (x64) Ę䀀  䀀   乐䀴   ㋈䀴     　g   䀴 ⊸3…'
    nHiddenFinalFrames: 0

请先登录，再进行评论。

Answer 3

Vijay Yadav 2019-5-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/47877-read-seq-file-in-matlab#answer_373999

Hey,

Can anyone please share matlab script for reading .seq file

4 个评论
显示 2更早的评论隐藏 2更早的评论

Walter Roberson 2019-5-7

Try Paul's utility at https://www.mathworks.com/matlabcentral/fileexchange/68341-readcompressedjpegseq

Paul Siefert 2019-6-5

You can now read compressed and uncompresed sequences completly, or within a reading window with the above script.

请先登录，再进行评论。

Read .seq file in MATLAB

2 个评论
显示无隐藏无

采纳的回答

5 个评论
显示 3更早的评论隐藏 3更早的评论

更多回答（2 个）

2 个评论
显示无隐藏无

4 个评论
显示 2更早的评论隐藏 2更早的评论

另请参阅

类别

标签

Community Treasure Hunt

Read .seq file in MATLAB

2 个评论 显示 无隐藏 无

采纳的回答

5 个评论 显示 3更早的评论隐藏 3更早的评论

更多回答（2 个）

2 个评论 显示 无隐藏 无

4 个评论 显示 2更早的评论隐藏 2更早的评论

另请参阅

类别

标签

Community Treasure Hunt

2 个评论
显示无隐藏无

5 个评论
显示 3更早的评论隐藏 3更早的评论

2 个评论
显示无隐藏无

4 个评论
显示 2更早的评论隐藏 2更早的评论