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Axis Technical Presentation

Axis Technical Presentation. Ian Qvist. Agenda. Advanced Technical Presentation Introduction Axis 205 DNS function Introduction Camera Electronics and Optics HTTP – API command set Customized Web page with Axis Camera I/O control Scripting possibilities in Axis Camera. AXIS Dynamic DNS.

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Axis Technical Presentation

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  1. Axis Technical Presentation Ian Qvist

  2. Agenda • Advanced Technical Presentation • Introduction Axis 205 DNS function • Introduction Camera Electronics and Optics • HTTP – API command set • Customized Web page with Axis Camera • I/O control • Scripting possibilities in Axis Camera

  3. AXIS Dynamic DNS

  4. AXIS Dynamic DNS

  5. AXIS Dynamic DNS

  6. Camera Electronics and Optics

  7. Introduction to cameras • A video sensor (CCD or CMOS) capture the light to create an electric signal

  8. CCD size comp. to: 1" 2/3" H=12.8 V=9.6 D=16 H=8.8 V=6.6 D=11 1/2" H=6.4 V=4.8 D=8.0 1/3" H=4.4 V=3.3 D=5.5 1/4" H=3.2 V=2.4 D=4.0 1/5 1/6”

  9. CCD size • CCD size reduction helps: • Smaller cameras because of smaller optics • Reduction of sensor price • Sensitivity constant or increased • CCD size reduction is helped by: • Improvement of manufacturing processes • Clean rooms

  10. CCD technology • Hyper HAD OCL • Sony Micro lens technology improved sensitivity and reduced smear • 80-100%of light captured by pixel • -30dB Smear +100% sensitivity compared to HAD

  11. 1 CCD Camera Colour CCD B/W CCD Each Pixel has a Colour Filter

  12. Lens, first in the camera Optics – Lens • f value is specifying the field of view, trough above formula we can calculate what f value we need • F is the value of the iris and is telling us how light sensitive the lens is, number should be as low as possible

  13. Let´s build a Camera IR-filter IR-Filter • Is letting visible light go through and is stopping IR. • In a color camera there is always IR filter but normally not on b/w. Day and night color cameras is changing between day and night by taking the IR filter on or off.

  14. Let´s build a Camera IR-Filter CCD Image Sensor • On high quality cameras the sensor is a CCD on low-end it´s C-MOS • 752x582 is the amount of pixel and it is not equal to the resolution but, it is the maximum theoretical resolution so it have substantial impact on picture quality, should be as high as possible

  15. Let´s build a Camera IR-Filter CCD AGC AGC (Automatic Gain Control) • If there is not enough of light, this circuit willamplifying the signal to a sufficient level. This is making the picture brighter but have a disadvantage in increase noise • Function is normally automatic but in more advanced cameras it can be switch off

  16. Let´s build a Camera IR-Filter CCD AGC A/D converter A/D converter • Signal from CCD is analogue and AGC have to be analogue but from now on the signal will be digital trough Analogue/Digital conversion

  17. Let´s build a Camera IR-Filter CCD AGC A/D converter DSP Digital Signal Processor • Control: Iris, Shutter, AGC, White balance, Back light compensation • Create the color • Making picture artificial sharp by Detail Iris

  18. Let´s build a Camera IR-Filter CCD AGC A/D converter DSP Memory Memory • Is keeping the picture until it is ready to be send Iris Video out D/A converter

  19. Let´s build a Camera IR-Filter CCD AGC A/D converter DSP Memory Ethernet interface Ethernet interface • Is where the data is packed for TCP/IP RJ45 TP Iris Video out D/A converter

  20. Let´s build a Camera. However!!! ARTPEC ETRAX IR-Filter CCD RJ45 TP Iris AGC A/D converter DSP Ethernet interface Compression AXIS using it´s core technology to make network cameras. • ARTPEC • ETRAX, (Ethernet Token Ring, Axis) Memory

  21. HTTP – API introduction • HTTP commands, Web design • Understand camera HTTP commands. • Seek HTTP command in manual and use these. • Understand HTML structure. • Make own HTML Web page. • Construct own camera Web page on Web Server. • Construct own camera Web page placed in camera. • HI-HIT Web server

  22. HTTP command in URL URL address

  23. HTTP command with parameters ? = delimiter to parameters & = delimiter to the next parameter. Compression = 0 no compression Compression = 100 max compression

  24. HTML commands http://www.w3.org/MarkUp/Guide/ <html> <head> <title>New Page 1</title> </head> <body> your code here </body> </html>

  25. HTML tags title>My first HTML document</title> <h1>An important heading</h1> <h2>A slightly less important heading</h2> <p>This is a paragraph.</p> <img src=“axis.jpg" width="200" height="150"> This a link to <a href=“my_page.html">My best page</a>. <font color="#FF0000">hello in red</font> <b> bold </b> <br> = new line

  26. Camera Web page 2. Right click on white area 1. Go to demo 3. Click Source

  27. Camera Web page HTML code Enter camera IP address You may change as you wish Only camera resolution to be given

  28. HI – HIT Web Server Thousands connections to Internet One FTP stream Read the entire manual on following link: http://www.axis.com/techsup/cam_servers/tech_notes/live_video_iis.htm

  29. HI –HIT configuration a) Configure Web Server Create the image directory on the Web server.Example: c:\inetpub\ftproot\liveCreate a Web Server alias (virtual directory) and use this as the image path in the Web pageExample: http://[WebServer]/live/ Get the LiveImg.dll and copy it to the "execute" directory in your Web server file tree (typically c:\inetpub\wwwroot\cgi-bin if you are using Microsoft IIS/PWS). b) Configure Camera to FTP transfer

  30. HI – HIT modification of Camera stream Change these Parameters in your HTML code: path: The image path (i.e. /live/image.jpg).fps | fpm: Frames/second or frames/minute.duration: For how many seconds the images should be pushed to the client.timeout: The image feed stops after timeout seconds if the image has not been updated. Examples:Deliver 3 images/second during 60 seconds. Stop after 30 seconds if the image has not been updated (default parameter values):http://<web_server>/cgi-bin/liveimg.dll?path=/live/image.jpg

  31. Axis Camera I/O Control

  32. Layout with I/O control

  33. Layout with Output Buttons

  34. HTTP I/O Check Input Activate Output Note: camera returns status -> web browser get white

  35. Scripting in Axis Camera

  36. File system and memory ROMFS (read only) bin/ – built-in applicatinons, executeable files dev/ – device files lib/ – C-libraries used by applications proc/ – process information usr/ – built-in web pages, cgi’s, scripts JFFS (read/write) Configuration files, task.list, custom scripts, custom web RAMFS (read/write) Temporary files, image buffer

  37. Built-in editor – editcgi http://<IP address>/admin-bin/editcgi.cgi?file=<file> Edit files, create new files, browse the file system

  38. FTP and telnet • FTP • Get files • Put files • Set permisson on files (chmod 755) • Create directories • Telnet (enable telnet in the file /etc/inittab) • Run scripts/applications • Run shell commands • Create/delete directories/files • Set permissions on files

  39. Built-in applications

  40. Built-in applications – bufferd Pre-Buffer Stop! Post-Buffer Capture images and store them on the RAM-disk (/tmp) The pre-buffer is continuously storing images in FIFO-order; whereby the latest image overwrites the eldest On ’stop’, the pre-buffer stops. The post-buffer is then filled with the pre-specified number of images. When the last image has been saved a status file is created.

  41. Built-in applications – smtpclient Send e-mails with attachment

  42. Built-in applications – sftpclient Upload images to an FTP server FTP server

  43. Built-in applications – shttpclient • Open an HTTP connection • Internally to local host (127.0.0.1) • Externally to a remote Web server

  44. Built-in applications – parhandclient • Parameter handler • Set parameters • Get parameters to a file as different types NAMEVALUE: root.Network.IPAddress=”10.13.17.76” RAW: 10.13.17.76

  45. Built-in applications – alarm Send a TCP message to a remote host

  46. Built-in applications – logger Write messages to a log file Output example in /var/log/messages: Oct 10 08:13:14 AxisProduct myScript: Up and running

  47. utask & task.list

  48. utask & (user.)task.list /bin/utask init /etc/inittab Task scheduler Trigger app Trigger script utask /etc/task.list/etc/user.task.list

  49. Task.list – events • Trigger the script or application ... • by time • by date • by boot • by digital input • by motion • by video input (video servers)

  50. Custom web pages

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