공짜라는 정보가 있어서 낼름!



겁나 무섭다는데 흑흑 ㅠㅠ


Posted by 구차니

재탕은 너무하잖아 ㅠㅠ

새거 내놔 ㅠㅠ




Posted by 구차니
embeded/raspberry pi2015. 9. 16. 15:24

raw로 받을 수 있는데..

동영상까지 하려면 아무래도..USB로 처리하는 ethernet 때문에

대역폭 한계로 저장에는 애로가 꽃필듯하다


raspistill --raw -o raw.jpg

It's not RGB, it's bayer data 

[링크 : https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=44918]

[링크 : http://bealecorner.org/best/RPi/]

[링크 : http://www.farnell.com/datasheets/1730389.pdf]


picamera / raw video

[링크 : http://raspberrypi.stackexchange.com/questions/27207/uncompressed-video-recording]

    [링크 : http://picamera.readthedocs.org/en/release-1.10/]


+

2017.02.28

matlab에서 rpi 카메라 조작하기

[링크 : https://kr.mathworks.com/.../working-with-raspberry-pi-camera-board.html...m]

Posted by 구차니
embeded/raspberry pi2015. 9. 16. 15:19

헐.. UI가 조금 구리지만.. 잘 꾸미면 웬만한 사용제품 급이겠는데? ㄷㄷ


[링크 : http://elinux.org/RPi-Cam-Web-Interface]

[링크 : https://github.com/silvanmelchior/RPi_Cam_Web_Interface]

    [링크 : http://jamiej7.wix.com/anpr-on-raspberry-pi]

Posted by 구차니
회사일2015. 9. 16. 13:43

그러니까.. AVB가 인프라고

RAW video는 기존의 표준이 있으니 RTP에 하나 추가해서

RAW 데이터를 전송하면 끝?



AVB - Audio video Bridge

[링크 : http://www.tta.or.kr/data/weekly_view.jsp?news_id=1926]

[링크 : https://en.wikipedia.org/wiki/Audio_Video_Bridging]


uncompressed video over IP

[링크 : http://www.tvtechnology.com/miscellaneous/0008/uncompressed-video-over-ip/206200]


RTP AVP(Audio Video Profile)

[링크 : https://en.wikipedia.org/wiki/RTP_audio_video_profile]


RTP Payload Format for Uncompressed Video

[링크 : https://tools.ietf.org/html/rfc4175]


[링크 : https://itea3.org/.../09039-MEDIATE-WP-2-MediateD221StandardsandInteroperabilityv11pdf.pdf]


[링크 : https://csperkins.org/research/ultragrid/2004-07-APAN.pdf]

[링크 : http://www.apan.net/meetings/tokyo2006/presentation/2006-01-APAN-STDs.pdf]


[링크 : https://en.wikipedia.org/wiki/Real-time_Transport_Protocol]

[링크 : https://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol]


RTSP = RTCP + RTP

[링크 : http://nenunena.tistory.com/94]

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Posted by 구차니

으흐흐 이걸로 티스토리 스킨을 꾸며봐야지 ㅋㅋㅋ

(이제와서 이런거 공부하면서 뿌듯해 하는 노인 1인 ㅋㅋㅋ)


[링크 : http://www.w3schools.com/html/tryit.asp?filename=tryhtml_lists_menu]

[링크 : http://www.w3schools.com/html/html_lists.asp]

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embeded/raspberry pi2015. 9. 16. 10:20

서보 모터 2개 제어하려니.. PWM 채널 2개인게 편해서 검색..

그런데.. 저 핀 수는 어떤 기준이지?


12  PWM channel 0  A+/B+/Pi2 and compute module only

13  PWM channel 1  A+/B+/Pi2 and compute module only

18  PWM channel 0  All models

19  PWM channel 1  A+/B+/Pi2 and compute module only


40  PWM channel 0  Compute module only

41  PWM channel 1  Compute module only

45  PWM channel 1  Compute module only

52  PWM channel 0  Compute module only

53  PWM channel 1  Compute module only


[링크 : http://abyz.co.uk/rpi/pigpio/python.html#hardware_PWM] 


There are two hardware PWM channels on the BCM2385/6.

PWM0, which can be set to use GPIOs 12, 18, 40, and 52. Only 12 (pin 32) and 18 (pin 12) are available on the B+/2B, and PWM1 which can be set to use GPIOs 13, 19, 41, 45 and 53. Only 13 is available on the B+/2B, on pin 35 (but I think PWM1 is used for something - is it the audio output?)


[링크 : https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=105044] 


라즈베리 2B에는 GPIO13과 GPIO18번이 나와있으니.. 이걸 두개 설정해서

HW PWM으로 사용할 수 있을 것 같은데..

[링크 : http://elinux.org/RPi_BCM2835_GPIOs]


[링크 : http://elinux.org/RPi_Low-level_peripherals]




이렇게 맞붙여서 한번 해봐야지..


Posted by 구차니

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]

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embeded/raspberry pi2015. 9. 15. 12:43

bcm2835-v4l2 모듈만 불러주면 해결

(테스트 라즈비안 2015.5.5일자 클린상태)

---

uv4l2를 설치해서 되는건진 테스트 필요 (sd 밀고 다시 설정하고.. 아으 ㅋㅋㅋㅋ)

$ sudo apt-get install uv4l uv4l-raspicam uv4l-raspicam-extras uv4l-server uv4l-uvc uv4l-xscreen uv4l-mjpegstream 

---


Camera Enable로 설정 후 재부팅

$ sudo raspi-config


$ sudo modprobe bcm2835-v4l2

$ lsmod | grep v4l

bcm2835_v4l2           37265  0

videobuf2_vmalloc       5397  1 bcm2835_v4l2

videobuf2_core         34020  1 bcm2835_v4l2

v4l2_common             3766  2 bcm2835_v4l2,videobuf2_core

videodev              124141  3 bcm2835_v4l2,v4l2_common,videobuf2_core


$ dmesg

[ 6468.552996] media: Linux media interface: v0.10

[ 6468.574380] Linux video capture interface: v2.00

[ 6468.610013] bcm2835-v4l2: scene mode selected 0, was 0

[ 6468.610559] bcm2835-v4l2: V4L2 device registered as video0 - stills mode > 1280x720

[ 6468.615652] bcm2835-v4l2: Broadcom 2835 MMAL video capture ver 0.0.2 loaded.


$ ls -al /dev/video0

crw-rw-rwT+ 1 root video 81, 0  9월 15 12:37 /dev/video0 


[링크 : http://www.ics.com/blog/raspberry-pi-camera-module]


만약 start_x를 추가하지 않아 카메라가 활성화 되지 않으면

Operation not permitted 라는 에러 메시지가 발생된다.

$ lsmod

Module                  Size  Used by

cuse                    5065  0

fuse                   81710  2 cuse

snd_bcm2835            19769  0

snd_pcm                74825  1 snd_bcm2835

snd_seq                53561  0

snd_seq_device          3650  1 snd_seq

snd_timer              18157  2 snd_pcm,snd_seq

snd                    52116  5 snd_bcm2835,snd_timer,snd_pcm,snd_seq,snd_seq_device

uio_pdrv_genirq         2966  0

uio                     8235  1 uio_pdrv_genirq


$ sudo modprobe bcm2835-v4l2

ERROR: could not insert 'bcm2835_v4l2': Operation not permitted


$ dmesg

[   33.911831] media: Linux media interface: v0.10

[   33.932822] Linux video capture interface: v2.00

[   33.957085] : bcm2835-v4l2: error -1 while loading driver 


Camera

start_x Enable the camera module.

 start_x=1


disable_camera_led Turn off the red camera LED when recording video or taking a still picture

 disable_camera_led=1


gpu_mem minimum GPU memory for camera use

 gpu_mem=128

[링크 : http://elinux.org/RPiconfig#Camera] 


움직임 감지시 이미지로 저장하는 부분

output_normal을 off로 하면 "target_dir" 에 저장을 하지 않음

############################################################

# Image File Output

############################################################


# Output 'normal' pictures when motion is detected (default: on)

# Valid values: on, off, first, best, center

# When set to 'first', only the first picture of an event is saved.

# Picture with most motion of an event is saved when set to 'best'.

# Picture with motion nearest center of picture is saved when set to 'center'.

# Can be used as preview shot for the corresponding movie.

output_normal off


# Output pictures with only the pixels moving object (ghost images) (default: off)

output_motion off


# The quality (in percent) to be used by the jpeg compression (default: 75)

quality 75


# Output ppm images instead of jpeg (default: off)

ppm off


움직임 감지시 동영상 저장 부분. swf가 기본값이며 ffmpeg_cap_new를 off로 해주면 저장되지 않았다.

(기본값이 off라면서 on이 되어 있냐 -_-)

############################################################

# FFMPEG related options

# Film (mpeg) file output, and deinterlacing of the video input

# The options movie_filename and timelapse_filename are also used

# by the ffmpeg feature

############################################################


# Use ffmpeg to encode mpeg movies in realtime (default: off)

ffmpeg_cap_new off


# Use ffmpeg to make movies with only the pixels moving

# object (ghost images) (default: off)

ffmpeg_cap_motion off


# Use ffmpeg to encode a timelapse movie

# Default value 0 = off - else save frame every Nth second

ffmpeg_timelapse 0


# The file rollover mode of the timelapse video

# Valid values: hourly, daily (default), weekly-sunday, weekly-monday, monthly, manual

ffmpeg_timelapse_mode daily


# Bitrate to be used by the ffmpeg encoder (default: 400000)

# This option is ignored if ffmpeg_variable_bitrate is not 0 (disabled)

ffmpeg_bps 500000


# Enables and defines variable bitrate for the ffmpeg encoder.

# ffmpeg_bps is ignored if variable bitrate is enabled.

# Valid values: 0 (default) = fixed bitrate defined by ffmpeg_bps,

# or the range 2 - 31 where 2 means best quality and 31 is worst.

ffmpeg_variable_bitrate 0


# Codec to used by ffmpeg for the video compression.

# Timelapse mpegs are always made in mpeg1 format independent from this option.

# Supported formats are: mpeg1 (ffmpeg-0.4.8 only), mpeg4 (default), and msmpeg4.

# mpeg1 - gives you files with extension .mpg

# mpeg4 or msmpeg4 - gives you files with extension .avi

# msmpeg4 is recommended for use with Windows Media Player because

# it requires no installation of codec on the Windows client.

# swf - gives you a flash film with extension .swf

# flv - gives you a flash video with extension .flv

# ffv1 - FF video codec 1 for Lossless Encoding ( experimental )

# mov - QuickTime ( testing )

ffmpeg_video_codec swf


# Use ffmpeg to deinterlace video. Necessary if you use an analog camera

# and see horizontal combing on moving objects in video or pictures.

# (default: off)

ffmpeg_deinterlace off 


motion.conf

I ended up commented these out when i was testing but not totally sure if it helped.

It's prolly ok to leave motion.conf pretty much as it was but this works fine for me and that's how it's gonna stay now it's fully working.


;netcam_url value

;target_dir value

;webcam_port 8081

;videodevice /dev/video0

[링크 : http://ubuntuforums.org/showthread.php?t=1897786] 


화면이 안떠서 디버깅을 해보니 예제로 된 /etc/motion/motion.conf 에서

thread의 경로가 잘못 잡힌 것을 발견

$ sudo motion[0] Processing thread 0 - config file /etc/motion/motion.conf

[0] Thread config file /usr/local/etc/thread1.conf not found: No such file or directory

[0] Thread config file /usr/local/etc/thread2.conf not found: No such file or directory

[0] Motion 3.2.12 Started

[0] Motion going to daemon mode 


이렇게 하니.. 8081 8082 포트로 접속이 된다.

$ sudo vi /etc/motion/motion.conf
# thread config files.

thread /etc/motion/thread1.conf

thread /etc/motion/thread2.conf

; thread /usr/local/etc/thread3.conf

; thread /usr/local/etc/thread4.conf 



8080 에서는 작동중인 쓰레드가

8081 에는 cam1


8082에는 cam2



15 프레임 캡쳐 / 15 프레임 스트리밍 해둔건데 cpu가 1개 코어 100%를 먹네.. ㄷㄷㄷ



+

그나저나 아이패드에서는 영상이 가로/세로 바꾸거나 스크롤을 하는 동안에만 잠시 보인다..

머가 문제라서 리프레시가 자동으로 안될까?


+

갤럭시 S2 에서는 다운로드..


+

IE 에서도 다운로드

크롬외에는 쓸모가 없나 -ㅁ-?

아니면.. HTTP 스트리밍이 되는.. vlc?


Posted by 구차니
프로그램 사용/VLC2015. 9. 15. 12:00

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.





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Posted by 구차니