lytro resources

发表于 2014 年 9 月 13 日 由 pswzyu

http://optics.miloush.net/lytro/TheResources.aspx

http://eclecti.cc/computervision/reverse-engineering-the-lytro-lfp-file-format

http://www.timzaman.com/?p=2457

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solve steam crash when shart problem

发表于 2014 年 9 月 1 日 由 pswzyu

I encountered a problem that when startsteam.sh: line 755:  3142 Segmentation fault

I ran “DEBUGGER=gdb steam” and found that it is related to the 32bit nvidia GL library

So I uninstalled nvidia driver and uninstalled these two packages:

libgl1-mesa-dri:i386, libgl1-mesa-glx:i386

Then, reinstall the nvidia driver and open steam, it will you prompt you to install some i386 package(which is the above mentioned two packages), and then it works again.

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install caffe on ubuntu 12.04

发表于 2014 年 8 月 29 日 由 pswzyu

caffe is a deep learning framework, the official site is at: http://caffe.berkeleyvision.orginstall the dependencies following the instructions on the official site, when install nvidia driver and the cuda, better install both from the .run script

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[quote]MATLAB R2013a on Ubuntu 12.10: libstdc++ issues when running 64-bit

发表于 2014 年 8 月 28 日 由 pswzyu

source: http://blogs.bu.edu/mhirsch/2013/04/matlab-libstdc-issues-when-running-64-bit/

In some systems (here, it was 64-bit Matlab on 64-bit Ubuntu 12.10) you may find an error about the version of libstdc++ being wrong. E.g. when using the system() or unix()commands.

Here’s what worked for me.

1) cd /usr/local/MATLAB/R2013a/sys/os/glnxa64
2) sudo mkdir obsolete
3) sudo mv libstdc* obsolete/
4) sudo ln -s /usr/lib/x86_64-linux-gnu/libstdc* ./

The specific error this fixed for me was calling gnucap from Matlab. I would get the error:
gnucap: /usr/local/MATLAB/R2013a/sys/os/glnxa64/libstdc++.so.6: version `GLIBCXX_3.4.15′ not found (required by gnucap)

when running in Matlab
unix('gnucap -b foo.net')
or
system('gnucap -b foo.net')

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Install python-lfp-reader in ubuntu 12.04

发表于 2014 年 8 月 20 日 由 pswzyu

python lfp reader is a tool that can read the latest lytro camera file format, and then extract the content inside.

The website for this project is: http://code.behnam.es/python-lfp-reader/ . The project has instructions on how to install and run. However, when installing on ubuntu 12.04, I still encountered several problems. Here I took a note on how to solve the problems.

  • no element ffdec_h264 : need to install package gstreamer0.10-ffmpeg
  • no element h264parser : need to install package gstreamer0.10-plugins-bad
  • ecoder jpeg not available : need to make a link in order for PIL to find the jpeg lib, refer to the following links:       http://stackoverflow.com/questions/4632261/pil-jpeg-library-help             and after making the link, you need to reinstall the PIL library
  • no modeule named _imagingtk : need to install package python-imaging-tk

Then you can use:  “lfp-picture export <path to your input stack.lfp file>” to obtain all the focus stack and depth map and the all_focus image. The depth map txt file can be directly read into matlab using load command.

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Indoor Segmentation and Support Inference from RGBD Images

发表于 2014 年 5 月 30 日 由 pswzyu

Deploy and Setup

  1. download the dataset, which is a single .mat file.
  2. modify the “Consts.m” file. In this file, we need to setup the correct path. This includes:
  3. download and install SPAMS framework. Download and build the package, paste the absolute path to “build” folder to the Const.m
  4. download and install gurobi optimization package.

Start to Run

There are three entry points to the code package. The first is the run_pipeline_segmentation.m. This only generate the segmentation results. The other two are the run_pipeline_support_inference_gt.m and run_pipeline_support_inference_seg.m. These two do support inference based on the manually labeled segments and the segments generated by the segmentation procedure respectively.

Issue in running in 2013a

The original package is written and compiled in 2011a, there are some changes between the versions of Matlab. The code will fail in an error “not positive semi-definite”. We need to create a new function and copy the content in “princomp.m” into it, then change this line

varargout{1} = pca(varargin{1},’Algorithm’,’eig’,’Economy’,fEconomy);

to use the ‘svd’ algorithm. Then change all the places that call princomp to call this new funciton.

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[quote] gdb : Could not insert hardware watchpoint

发表于 2014 年 4 月 24 日 由 pswzyu

Source: http://stackoverflow.com/questions/3206332/gdb-stops-with-too-many-watchpoints-when-there-is-only-one

set can-use-hw-watchpoints 0

 

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[original] How to use symbian phone as webcam under ubuntu 13.10

发表于 2014 年 3 月 29 日 由 pswzyu

The project is here  http://sourceforge.net/projects/smartcam/files/

In ubuntu we need to first download the source code. Then according to there readme file, we need to build it. First install some dependencies.

intltool, libgtk2.0-dev, libdbus-glib-1-dev, libgconf2-dev, libbluetooth-dev

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[quote]How can I configure dbus to allow ssh-user to suspend server

发表于 2014 年 3 月 3 日 由 pswzyu

Original link: http://askubuntu.com/questions/21586/how-can-i-configure-dbus-to-allow-ssh-user-to-suspend-server

There are two basic ways this can be done and a workaround:

继续阅读 →

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【转】Linux下文件分割合并

发表于 2014 年 1 月 23 日 由 pswzyu

转载自：http://os.51cto.com/art/201104/255359.htm

截取文中关于二进制的部分：

对于可执行文件等二进制文件，则不能通过文件行数来进行文件分割，此时我们可以指定分割大小来分隔文件。

命令： 继续阅读 →

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