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뜬금없지만.. hugin에서 특징점 뽑는거.. 일종의 SIFT나 SURF 일려나?
[링크 : http://hugin.sourceforge.net/tutorials/perspective/en.shtml]
+ [링크 : http://docs.gimp.org/en/plug-in-lens-distortion.html]
+
Panomatic
From PanoTools.org Wiki
panomatic by Anael Orlinski is a tool for automatically creating control points for groups of overlapping photographs.
pan-o-matic is very similar in purpose to autopano-sift or autopano-sift-C and can be used from within hugin (and potentially other GUI front-ends[*]) as an optional control point generator.
pan-o-matic is Open Source and uses the SURF algorithm.
[링크 : http://hugin.sourceforge.net/docs/manual/Panomatic.html]
hugin 업그레이드~ (0) | 2012.08.10 |
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hugin - 2010.4.0 버전 (0) | 2011.04.30 |
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Hugin - Panorama photo stitcher (4) | 2010.08.19 |
[링크 : http://xmodulo.com/how-to-speed-up-x11-forwarding-in-ssh.html]
[링크 : http://blog.famzah.net/2010/06/11/openssh-ciphers-performance-benchmark/]
[링크 : http://www.cyberciti.biz/faq/speeding-up-ssh-x11-forwarding-with-unix-osx-linux-bsd/]
[링크 : http://ubuntuforums.org/showthread.php?t=1855933]
rpi2 + putty + xming 에서는
vlc 실행에 걸리는 시간이 차이가 거의 안나서.. 다른 좀 더 영상이 많다거나 하는 걸로 테스트 해봐야 할 듯..
Turn on compression to speed up your connection, and bring Blowfish to the top of the list. Blowfish is still relatively secure, but will be a heck of a lot quicker than AES at passing information as your computer doesn’t have to encrypt things so heavily.
[링크 : http://irrationale.com/2009/11/10/x11-over-ssh/]
Nagle 알고리즘은 패킷의 갯수를 줄이는 것
일단 적은 데이터(MTU 미만)에서는 응답속도와 tradeoff가 일어난다.
기본값은 off니까 빠릿빠릿하게 ssh 응답을 하는 듯?
4.12.4 "Disable Nagle's algorithm"
Nagle's algorithm is a detail of TCP/IP implementations that tries to minimise the number of small data packets sent down a network connection. With Nagle's algorithm enabled, PuTTY's bandwidth usage will be slightly more efficient; with it disabled, you may find you get a faster response to your keystrokes when connecting to some types of server.
The Nagle algorithm is disabled by default.
[링크 : http://the.earth.li/~sgtatham/putty/0.52/htmldoc/Chapter4.html]
scp: ambiguous target 에러 (0) | 2016.09.21 |
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sshpass를 이용한 scp 암호 자동 입력 (0) | 2016.09.19 |
sshd server key 경로 (0) | 2015.01.06 |
ssh 아이디 입력후 로그인 패스워드 입력이 지연되는 문제 (0) | 2014.09.03 |
ssh X11 forwarding 옵션 (0) | 2012.01.25 |
어쩌다 보니 듣게 된 프로토콜..
오토메이션 관련 de facto 프로토콜
[링크 : https://en.wikipedia.org/wiki/Modbus]
[링크 : http://irtfweb.ifa.hawaii.edu/~smokey/software/about/sixnet/modbus/modbus_protocol.pdf]
libmodbus 예제 프로그램 (0) | 2022.05.04 |
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libmodbus tcp 예제 (0) | 2022.05.04 |
libmodbus (0) | 2022.05.03 |
modbus tcp 테스트 툴 (0) | 2022.05.03 |
modbus tcp library (0) | 2022.04.25 |
너.. 정체가 모냐?
일단은... -vvv 옵션차이로 rtsp / http 스트리밍이 되기도 하고 안되기도 한다. -_-
--v4l2-set-ctrls <문자열>
v4l2 드라이버 제어
Set the v4l2 driver controls to the values specified using a comma
separated list optionally encapsulated by curly braces (e.g.:
{video_bitrate=6000000,audio_crc=0,stream_type=3} ). To list
available controls, increase verbosity (-vvv) or use the v4l2-ctl
application.
--verbose-objects <문자열>
어떤 객체가 디버그 메시지를
출력할지 선택
This is a ',' separated string, each object should be prefixed by a
'+' or a '-' to respectively enable or disable it. The keyword 'all'
refers to all objects. Objects can be referred to by their type or
module name. Rules applying to named objects take precedence over
rules applying to object types. Note that you still need to use -vvv
to actually display debug message.
http vlc protocol (0) | 2018.11.30 |
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vlc for windows / ascii art ㅋㅋㅋ (0) | 2016.11.22 |
dash with VLC (0) | 2015.09.11 |
VLC dshow(캡쳐장비) 해상도 설정 (0) | 2015.05.23 |
VLC로 multicast 테스트 (0) | 2014.10.22 |
vlc for windows / ascii art ㅋㅋㅋ (0) | 2016.11.22 |
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vlc 옵션 -vvv (0) | 2015.09.15 |
VLC dshow(캡쳐장비) 해상도 설정 (0) | 2015.05.23 |
VLC로 multicast 테스트 (0) | 2014.10.22 |
VLC에서 mms로 스트리밍 하기 (0) | 2014.03.13 |
혹시나 해서 찾아 봤더니 ㄷㄷㄷ
그나저나...
nginx는 프로그램 자체에서 지원하고..
php의 경우 fpm-php에서 fastcgi에 대해서 캐싱을 지원한다고 한다.
[링크 : https://www.digitalocean.com/.../how-to-setup-fastcgi-caching-with-nginx-on-your-vps]
[링크 : http://websetnet.com/ko/how-to-configure-nginx-fastcgi-cache/]
nginx 리버스 프록시 와 ckeidtor upload 413 에러 (0) | 2019.04.03 |
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nginx 502 bad gateway와 audit (0) | 2019.03.20 |
nginx rever proxy with virtual host(+ subdomain) (0) | 2019.03.07 |
nginx load balance (0) | 2019.03.05 |
nginx reverse proxy (2) | 2018.10.30 |
dry run 이라는 옵션도 있네.
merge는 안하고 항상 혼자 쓰다 보니..
그냥 trunk 날리고 branch를 다시 trunk로 복사하거나(이력으로 인해)
trunk와 branch를 수동 머지 했는데 조금 편한법을 찾아 봐야겠다 ㅠㅠ
[링크 : http://asbear.tistory.com/72]
[링크 : http://asbear.tistory.com/50]
[링크 : http://egloos.zum.com/codenongsa/v/258234]
[링크 : http://jee1.tistory.com/888]
[링크 : http://greenbay.usc.edu/csci577/tools/Subversion/Subversion_User_Manual.pdf]
+
2015.12.02
[링크 : http://svnbook.red-bean.com/en/1.7/svn.ref.svn.c.merge.html]
[링크 : https://tortoisesvn.net/docs/release/TortoiseSVN_en/tsvn-dug-merge.html]
[링크 : http://hoiogi.tistory.com/20]
tortoiseSVN merge 페이지 번역 (0) | 2015.12.02 |
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svnadmin dump로 덤프/합치기 (0) | 2015.11.26 |
svn switch - shares no common ancestry with (0) | 2015.06.16 |
svn 저장소 합치기 (0) | 2015.06.06 |
svn diff syntax highlight 적용해서 보기 (0) | 2015.01.30 |
는... FAIL? -_ㅠ
아으..감이 올 듯 말듯..
그러니까.. display쪽은 multiseat 관련 내용이고
screen은 멀티 모니터 쪽 내용이려나?
Key terms The X window system has nuanced usage of a number of terms when compared to common usage, particularly "display" and "screen", a subset of which is given here for convenience: device A graphics device such as a computer graphics card or a computer motherboard's integrated graphics chipset. monitor A physical device such as a CRT or a flat screen computer display. screen An area into which graphics may be rendered, either through software alone into system memory as with VNC, or within a graphics device, some of which can render into more than one screen simultaneously, either viewable simultaneously or interchangeably. Interchangeable screens are often set up to be notionally left and right from one another, flipping from one to the next as the mouse pointer reaches the edge of the monitor. virtual screen Two different meanings are associated with this term: A technique allowing panning a monitor around a screen running at a larger resolution than the monitor is currently displaying. An effect simulated by a window manager by maintaining window position information in a larger coordinate system than the screen and allowing panning by simply moving the windows in response to the user. display A collection of screens, often involving multiple monitors, generally configured to allow the mouse to move the pointer to any position within them. Linux-based workstations are usually capable of having multiple displays, among which the user can switch with a special keyboard combination such as control-alt-function-key, simultaneously flipping all the monitors from showing the screens of one display to the screens in another. The term "display" should not be confused with the more specialized jargon "Zaphod display". The latter is a rare configuration allowing multiple users of a single computer to each have an independent set of display, mouse, and keyboard, as though they were using separate computers, but at a lower per-seat cost. |
displaynumber
multiseat 설정 아닌 이상은 0 으로 고정으로 봐도 무방?
screennumber
만약 모니터가 4개이고 2개씩 묶어 버리면 2개의 screen이 되려나?
즉, screen은 모니터의 모음
Display Names From the user's perspective, every X server has a display name of the form: hostname:displaynumber.screennumber This information is used by the application to determine how it should connect to the server and which screen it should use by default (on displays with multiple monitors): hostname The hostname specifies the name of the machine to which the display is physically connected. If the hostname is not given, the most efficient way of communicating to a server on the same machine will be used. displaynumber The phrase "display" is usually used to refer to collection of monitors that share a common keyboard and pointer (mouse, tablet, etc.). Most workstations tend to only have one keyboard, and therefore, only one display. Larger, multi-user systems, however, frequently have several displays so that more than one person can be doing graphics work at once. To avoid confusion, each display on a machine is assigned a display number (beginning at 0) when the X server for that display is started. The display number must always be given in a display name. screennumber Some displays share a single keyboard and pointer among two or more monitors. Since each monitor has its own set of windows, each screen is assigned a screen number (beginning at 0) when the X server for that display is started. If the screen number is not given, screen 0 will be used. [링크 : http://linux.die.net/man/7/x] |
2012/02/10 - [Linux/Ubuntu] - SSH를 통해 SSH 서버측에 X 응용프로그램 실행하기
xming / xdmcp 성공 (0) | 2016.02.02 |
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cygwin bash 쉘 시작 위치 지정하기 (0) | 2015.12.02 |
Xming vs cygwin/x (0) | 2012.01.25 |
Cygwin/X 추려내기 - ing (0) | 2011.09.10 |
Xming 신버전은 유료? (0) | 2011.09.09 |
imx 시리즈의 SDK에도 gstreamer가 들어있긴 했는데
그냥 넘겼거늘... 상당히 대단한 프레임워크로 보여서 급 관심..
먼저, 지연 없는 스트림 전송이라고 제목을 지었지만, 실제 딜레이는 720p 영상전송에서 0.3초 가량 되는 것 같습니다.
[링크 : http://www.rasplay.org/?p=5607]
gstreamer element 생성 gst_element_factory_make() (0) | 2021.07.13 |
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gst fpsdisplaysink (0) | 2021.02.18 |
gst videorate (0) | 2021.02.09 |
gstreamer tee (0) | 2021.02.08 |
gstreamer pipeline (0) | 2015.11.02 |