IP cam SoC Edit
hackaday raspebbery streaming use Hi3518E IP Camera SoC as alternative to Raspberry pi hack an old CCTV outdoor camera, replace the internal board with a rooted Hi3518E, add ESP32 with an IR sensor to wake up the cam and upload a few seconds of video to a cloud service? Low duty cycle, so it’s powered by solar and battery. Uses [http://www.ovt.com/uploads/parts/OV9712%20PB%20v1.1%20WEB.pdf OV9712 from ovt.com omnivision. PC (720P) Motorized Zoom & Auto Focal LEN 1/3" Aptina CMOS sensor AR0130 +Hi3518C CCTV IP camera module PCB board +LAN cable supports external wifi dongle (chip RT3070).
- http://www.openipcam.com/ modding , hacking ip cameras.
- https://jelmertiete.com/2016/03/14/IoT-IP-camera-teardown-and-getting-root-password/ rooting Logilink or Apexis JP8015 IP camera.
- https://blog.tho.ms/hacks/2016/08/28/openwrt-on-logilink-wc0030a.html operwrt on logilink ip cam.
- http://customcam.blogspot.co.za/ rooting webcam . See Gprs and wifi streaming and Tech blogs
- Linux camera driver (V4L2) for 13MP MIPI CSI-2 camera module . Full hd 1080 pix at 30frames, 13meg pix at 14fps, Ultra HD at 22fps.
Jetson TK1 camera board is a 4-lane MIPI CSI-2 camera solution for NVIDIA Tegra K1 CPU. It has a 13MP camera module and an adapter board to connect the camera with the Jetson TK1 development kit. The Jetson TK1 development kit is a full-fledged platform for Tegra K1 embedded applications. The e-CAM130_CUTK1 camera is interfaced to the Jetson development kit through 4-lane MIPI CSI-2 interface. e-con provides the full-fledged MIPI CSI-2 camera driver for this module that enables the customers to take full advantage of 4-lane MIPI CSI-2 interface supported by the NVIDIA Tegra K1 CPU. The e-CAM130_CUTK1 camera is exposed as a standard V4L2 device and customers can use the V4L2 APIs to access this camera and control the same. This e-CAM130_CUTK1 supports linux and android. See Derek Molloy on V4L2 c code .
- https://store.gumstix.com/caspa-fs.html Caspa FS camera board has a CMOS imager (Aptina MT9V032, 752 x 480, 60 FPS, color) making it ideal for robotics computer vision. Without an optical filter, the Caspa FS receives the full-spectrum including infra-red range. https://danstrother.com/2011/01/14/mt9v032-lvds-camera-board/ There are a few big reasons for selecting the MT9V032 – but the biggest, by far, is its global shutter (“TrueSNAP” in Aptina’s marketing parlance). The vast majority of CMOS image sensors use a simpler rolling shutter, which leads to all sorts of troublesome visual artifacts. The MT9V032, on the other hand, is able to expose all of its pixels for the exact same slice of time, making it immune to many of those artifacts. That doesn’t, of course, do any good for more conventional artifacts – like motion blur; only shorter exposures can help with that. ...Beyond raw sensitivity, the MT9V032 supports a form of high-dynamic-range exposures. By progressively reducing the sensitivity of its pixels over the course of an exposure, the sensor is able to approximate a non-linear response. This significantly increases the dynamic range that the sensor can capture in a single exposure – making it much easier to operate in environments with wildly varying lighting conditions (e.g. outside on a sunny day). For a mobile robot operating in an unstructured outdoor environment, each of those features is pretty compelling (perhaps even mandatory). Finding them all in one device is even better. Those features come at a (monetary) cost, however – in small quantities, it’s easily twice the price of less-functional VGA sensors.
3g dvr Edit
- Ambarella SoC mpeg4 video compression system
Ip cameras Edit
Attach a 1/2inch CCD Watec analogue camera(Google Ebay and Watec) to PAL/NTSC to USB converter(http://www.newegg.com/product/product.aspx?Item=N82E16882203057). The USB in turn connects via an USB-Ethernet adapter to a small embedded Wi-Fi AP to stream real-time video from a UAV etc. Or use DVR
WebRTC from google implements real-time video commmunication.
http://www.epiphan.com/products/frame-grabbers/vga2usb/ usb version http://www.epiphan.com/products/frame-grabbers/vga2ethernet/ framegrabber that converts an analogue or s-video signal to an Mpeg4Compression stream that is transmitted from the Uav robotics drone with a generic MeshNetworking access point modem, preferably 2.4ghz 802.11b and not d or g, because b has the furthest range.
Attach an analogue Watch 0.003lux camera to a mpeg4 module which interfaces with an embedded Wi-Fi radio. Most retail analogue-mpeg4 converters are Windows based.
- OpenTLD open source object recognition and tracking. Can automatically detect intruder and track him, engaging him with Net gun and PepperBall gun. Automatically detects a vehicle and can determine if vehicle stopped and then alert if hijackers disengaged, while ignoring the kids playing in the street. This will improve a CCTV surveillance system. Humans can't concentrate for more than 10mins.
Spectral response limits Edit
0.003Lux from http://www.wateccameras.com and http://www.ryshin.com is the limit in lux sensitivity for surveillance purposes. The values higher than this are used in astronomy (0.0001lux) and can't be used with moving objects since it smears the picture. http://www.wateccameras.com and http://www.supercircuits.com are the preferred suppliers of high sensitive lux cameras. Adverts for CCTV cameras are deceptive, they will state that for night time vision in the presence of InfraRedLeds the CCD camera has a sensitivity of 0lux. There is no such thing as 0.0000000000000......0000lux. Security outlets selling cameras exploit the public's ignorance by stating their cameras operate at 0 lux. 0 lux implies 0.000000000000000000000000001 lux , there is no such camera. We have the following without IR illumination:
- 0.5 lux on 1/4 inch sensors
- 0.1 lux on 1/4 inch sensors which is also limit for color images
- 0.01 lux on 1/3inch sensors B/W
- 0.003 lux CCD limit before image smearing takes place on 1/2 inch CCD sensors with movement. B/W
- 0.0001 lux used in AstronomyCameras because the night sky is static.
The larger the CCD sensor the higher the sensitivity and cost of the camera. Only BW are available at 0.003lux. UavInTheNews uses 0.003 lux camera for aerial monitoring. A CCTV brochure must state the lux sensitivity (0 lux is not true) and image sensor size. The more sensitive ranges of lux requires less InfraRedLeds to illuminate a dark area.
webcam to scope Edit
http://www.securitycamera2000.com/products/Core-Mechanism-1%7B47%7D3%27%27-SONY-CCD-700TVL-27X-ZOOM-for-PTZ-Dome-Camera-OSD.html Sony block camera used for UAV drone http://diydrones.com/profiles/blogs/fpv-gimbal-for-zoom-camera?id=705844%3ABlogPost%3A1875571&page=2#comments
- https://www.youtube.com/watch?v=uvsHrKIafQ8 flir on uav
- https://www.youtube.com/watch?v=npFp09kIb08 Sony block camera on Quad frames, QuadroCopter
Ebay shippers Edit
- Will ship combined orders, most ebay merchants refuse
Watec retailers Edit
Build own analogue camera Edit
Reverse engineer Sanyo and others via http://www.bomarc.org/catalogs/Catalog-upload/VIDEO.txt BoMarc and build own CCTV camera and sell via FrontingCompany. http://www.dspfpga.com/?lang=en design with Sony CCD sensors.
FSO and cameras Edit
Digitize the video signal as the camera source and transmit the signal back via FreeSpaceOptics instead of using a VideoBalun . Nearly unlimited repeater nodes are created with FSO. Use FSO to repeat a camera signal back to the base.
CCTV stops crime in Natal Edit
Lenses used in CCTV Edit
Build pan, tilt, Zoom system with RS485 Edit
Spectral response and CCD sizes Edit
The larger the CCD sensor the better the spectral response or the better image resolution is achieved. 1/2 CCD coupled with an Infra-red laser can detect motion at 800m. 1/3 provides a good trade-off between cost and performance. 1/4inch, 1/3 and 1/2inch are sizes used for night vision. The lux value must be at least 0.01lux for long distance vision.
Astronomy cameras for CCTV Edit
* South African distributor of http://www.wateccameras.com: Scientific Alert 011 476 5718 * http://www.ultech.co.za
* 0.003lux camera * 0.08lux camera * See AstronomyCameras
* http://www.cctvforum.com/archive/post/video_over_Power_over_ethernet-9452-17.html * http://books.google.co.za/books?id=DaQY8CrmqFcC&pg=PA278&lpg=PA278&dq=%22analogue+video+to+ethernet%22&source=web&ots=PVOq4dWsJb&sig=LjCxYzpf7myaikQfUhnmQHcJ-o4&hl=en&sa=X&oi=book_result&resnum=76&ct=result
Pulnix has UltraViolet sensitive cameras.
Nightvision for CCD are achieved in the 820-880nm(semi-covert) and 940nm(completely covert) pectrum. A cluster of high power InfraRedLeds(820nm) will glow like red dragon eyes. For street surveillance 940nm must be used which is completely invisable to the human eye. The diodes are more expensive and the spectral response of the CCD must sensitive in the 940nm region. To prevent headlights from blinding the camera a IR filter lens is attached. Discriminating between a human walking down the street and a car driving past is possible. See http://www.zoneminder.com wiki for details on this. Eyes of animals work as the same way like CCTV Cameraswhile in the dark.
http://www.baxall.com sells a camera with an A/D converter on every pixel of the CCD sensor. The camera is usually used to attenuate sharp light overloading the CCD sensor. http://www.reditron.co.za will be able to provide more info on the Baxall range. http://www.axis.com Ethernet camera's CCD sensor are not suitable for nightvision applications. A high end mini-itx connected to a KMC-4400r or Pico capture card should be used and the mini-itx Ethernet port connected to the network. http://ffmpeg.mplayerhq.hu are used by ZoneMinder to stream Jpeg images over the network. In this way an Axis ethernet camera functionality is simulated. For a high current(2A, 12v) long range IR camera like the E-558(eaglecctv) use a standard PC power supply. Bridge the Green and Black contacts on the ATX connector to power it up.
CCD sensors Edit
1/4 , 1/3, 1/2 inch Ccd's Edit
In the days of vcr's we all used to use wither vhs (240 tvl colour) or svhs (supossidly >400tvl) and cameras were either med res (380 tvl b/w/330 colour) or high res (570 tvl b/w 480 tvl colour). Now as you could only resolve 240 on vhs why use high res cameras? Well you do end up with a slightly sharper image from high res kit even though your only recording the same actual number of pixels, i assume its to do withthe way the camera makes 380 tvl source into a 625 tvl transmission but i dont know. I would say always go for high res where possible (on the cam front)
Note on format sizes 1/4 1/3 and 1/2 inch ccd's all have (or can have) the same number of pixels. As most cctv is made from camcorder chips we tend to follow that industry, thats why the really specilist cctv are so much money (1/2 frame transfers etc). Even though a 1/4" can produce the same number of pixels a 1/2" chip can it needs a lot more light or gain to be able to do this. This is why cheapo cams have leds on them as they use 1/4 pickups and through their own light rather than 1/2 which can use clear starlight. Id go with a 1/3 as its a good balance between cost and low light performance. But if you have the light it matters little. Plus the smaller factors need cheaper lenses so you can save there.
Protecting the CCTV camera against sabotage Edit
PIR detectors are protected from having the heat sensing unit spray painted with black paint by using a short range Ultra-Sonic detector to detect any attempt as masking the PIR. See ElecTronics. It is known in the trade as PIR anti-masking. Clamp such an Ultra-Sonic detector against the camera to determine if a thief spray paints the camera. This is especially useful if the camera is not in motion detection mode.
Via Mini-itx and megapixel-camera Edit
* http://www.c-o-n-e.org/acone/software.html * http://www.c-o-n-e.org/acone/hardware.html Pictures of thermal regulated camera box.
Commercial DVR Edit
* $200 http://www.gadspot.com/product_info.php?&products_id=84 * $4 VGA converter http://www.gadspot.com/product_info.php?products_id=100&osCsid=bcda1909ab55e091277b97685723b340
Build own Ethernet cameras Edit
Build a circuit based on CircuitCellar June 2007 issue of video analogue to digital conversion using ARM processor and H-V line syncroniser seperator. Using an ASIC ciruit the digital data interfaces with an embedded ethernet controler which in turn interfaces with a switch. The switch connects to the VDSL2+ DsLam modem for video surveillance network.
LENSES FOR CAMERAS $59
ELECTRONIC HEARING OF GUNSHOT.
Nightvision goggles for R1000
Video surveillance specialists
* http://www.activesolutions.com/ * http://www.globalcomputer.com/applications/searchtools/search.asp?mnf=509&cat=35
* OGG THEORA
Elphel Model 333 A Linux-based network camera that uses the Ogg Theora decoder, implemented on an FPGA in open source code. Ogg Theora is said to allow, for the first time, both a low bitrate and high-resolution, high-framerate video. details. http://linuxdevices.com/articles/AT3888835064.html http://www.elphel.com/3fhlo/samples/333_samples/
MPEG4 linux boards from the aviosys website
- www.asterix.org? spelt right?
- Cctv streaming
Other notes Edit
CCTV stops crime Edit
* http://www.theregister.co.uk/2008/12/19/cctv_tracker_ware/ Tracks person through city * http://cctv-dvr.blogspot.com/ * http://www.camerasecuritynow.com/ * http://www.vio-pov.com/ Wearable cameras from http://news.thomasnet.com/fullstory/557874 * ThermalImagingCameras * SerialCameras * AstronomyCameras * http://www.euroshoponline.co.za/product_page.aspx?cat=4893&pid=3031 Quad processors with motion detection * http://www.supercircuits.com * http://www.cctvdepot.com Ether camera * http://www.ccdcameraweb.com/ * http://www.cmucam.org/ 115kbs Embedded serial camera for RoboTics * http://www.cmucam.org/wiki/Projects SEE Security projects with this cam * Mpeg4Compression - Look for stretch.com Embedded IP camera design that converts analogue to digital. * http://svconline.com Sound and Video journal See Rs485Post104 * http://www3.elphel.com/en/products FPGA network cameras * http://www.quasarelectronics.com/cmos_cameras.htm * http://cctvpro.co.za/?gclid=CJ6q4vbuxIwCFSdPEgod7U3hbA * http://www.securitywarehouse.co.za * http://www.extremecctv.com/product_detail.php?producttype_id=&page=1&product_id=189 * http://www.eaglecctv.co.za * http://www.reditron.co.za * http://www.roithner-lasers.com * http://en.wikipedia.org/wiki/Camera * http://www.liquidcctv.com/CCTV-Tools/Lens-Calculator.aspx * http://www.midafricam.co.za/www/ * http://www.camerapedia.org/wiki/Main_Page * http://www.doktorjon.co.uk/whatsnew1.html * Featuring Extreme’s US Patented UF500 IR illuminators, * http://yro.slashdot.org/yro/07/05/01/177254.shtml * http://www.infowars.net/articles/april2007/270407lip_reading.htm * http://news.bbc.co.uk/1/hi/uk/6108496.stm * http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=405477&in_page_id=1770 * http://infowars.net/articles/january2007/310107xraycams.htm