Roadmap - Revision history

Andrey.filippov at 04:22, 17 February 2017

2017-02-17T04:22:25Z

← Older revision		Revision as of 04:22, 17 February 2017
Line 1:		Line 1:
	== Background ==		== Background ==
	Elphel was started in 2001 (Magna, UT USA) when I quit my job inspired by the possibilities that Free Software gives to developers (it was not so obvious for my at the time employer). All the projects were covered in [http://www.linuxdevices.com LinuxDevices] (complete list on the articles is available [http://~~www~~.elphel.com/articles/index.html here]). For several years Elphel was a one-man company, in January 2004 I wrote an article [http://www.computerra.ru/hitech/tech/31862/ Taming of the Iron Penguin (Russian)] in the largest Russain computer-related magazine [http://www.computerra.ru Computerra] and announced there a competition among the software developers for the best video streamer to run in the camera. That was a good idea and after the competition itself was over most of the developers remained in the Elphel team. At first - as volunteers, later - as full/part time employees.		Elphel was started in 2001 (Magna, UT USA) when I quit my job inspired by the possibilities that Free Software gives to developers (it was not so obvious for my at the time employer). All the projects were covered in [http://www.linuxdevices.com LinuxDevices] (complete list on the articles is available [http://legacy.elphel.com/articles/index.html here]). For several years Elphel was a one-man company, in January 2004 I wrote an article [http://www.computerra.ru/hitech/tech/31862/ Taming of the Iron Penguin (Russian)] in the largest Russain computer-related magazine [http://www.computerra.ru Computerra] and announced there a competition among the software developers for the best video streamer to run in the camera. That was a good idea and after the competition itself was over most of the developers remained in the Elphel team. At first - as volunteers, later - as full/part time employees.

	Not all of these developers live in Russia - two, including the winner of the competition are from Kiev, Ukraine. But still all of them know Russian much better than English and so most of our technical discussions were on our private Russian-language forum. So far I failed to move these discussions to the broader audience but believe that Wiki technology can help. Here we will mantain most of the site in English but still have some pages/discussions in Russian, translating documents as we go. Or when somebody else needs it and is not satisfied with [http://babelfish.altavista.com Babelfish] automatic translation. We will try to keep English pages current - anyway even in Elphel not everybody knows Russian.		Not all of these developers live in Russia - two, including the winner of the competition are from Kiev, Ukraine. But still all of them know Russian much better than English and so most of our technical discussions were on our private Russian-language forum. So far I failed to move these discussions to the broader audience but believe that Wiki technology can help. Here we will mantain most of the site in English but still have some pages/discussions in Russian, translating documents as we go. Or when somebody else needs it and is not satisfied with [http://babelfish.altavista.com Babelfish] automatic translation. We will try to keep English pages current - anyway even in Elphel not everybody knows Russian.
Line 408:		Line 408:


	You may do it with the special HTML [http://~~www~~.elphel.com/3fhlo/bootblock/bootblock333.html page] but those serial numbers are supposed to be factory programmed.--[[User:Andrey.filippov\|Andrey.filippov]] 05:36, 30 December 2005 (CST)		You may do it with the special HTML [http://legacy.elphel.com/3fhlo/bootblock/bootblock333.html page] but those serial numbers are supposed to be factory programmed.--[[User:Andrey.filippov\|Andrey.filippov]] 05:36, 30 December 2005 (CST)


	== [[Pricing/Discount/Donation Policy]] ==		== [[Pricing/Discount/Donation Policy]] ==

GChriss: /* How to buy a Canon EOS Lens adapter for Elphel 333 */ can use for any Elphel camera

2011-05-10T19:08:51Z

How to buy a Canon EOS Lens adapter for Elphel 333: can use for any Elphel camera

← Older revision		Revision as of 19:08, 10 May 2011
Line 334:		Line 334:
	One research team of EPFL is working about an auto focus with the Elphel 353 camera. A bi dimensional filter will be used to calculate the sharpness of the image and to search the best in focus image.		One research team of EPFL is working about an auto focus with the Elphel 353 camera. A bi dimensional filter will be used to calculate the sharpness of the image and to search the best in focus image.

	=== How to buy a Canon EOS Lens adapter for Elphel ~~333~~ ===		=== How to buy a Canon EOS Lens adapter for Elphel cameras ===
	Search for "Kipon Canon EOS Mount Lens to C Mount Body Adapter" [http://www.amazon.com/Kipon-Canon-Mount-Lens-Adapter/dp/B004THUG6I ASIN: B004THUG6I], list price ~$30 USD		Search for "Kipon Canon EOS Mount Lens to C Mount Body Adapter" [http://www.amazon.com/Kipon-Canon-Mount-Lens-Adapter/dp/B004THUG6I ASIN: B004THUG6I], list price ~$30 USD

GChriss: /* How to build a Canon EOS Lens adatator for Elphel 333 */ adapters available for purchase, "fix" broken Birger link

2011-05-10T19:08:19Z

How to build a Canon EOS Lens adatator for Elphel 333: adapters available for purchase, "fix" broken Birger link

← Older revision		Revision as of 19:08, 10 May 2011
Line 334:		Line 334:
	One research team of EPFL is working about an auto focus with the Elphel 353 camera. A bi dimensional filter will be used to calculate the sharpness of the image and to search the best in focus image.		One research team of EPFL is working about an auto focus with the Elphel 353 camera. A bi dimensional filter will be used to calculate the sharpness of the image and to search the best in focus image.

	=== How to build a Canon EOS Lens ~~adatator~~ for Elphel 333 ===		=== How to buy a Canon EOS Lens adapter for Elphel 333 ===
			Search for "Kipon Canon EOS Mount Lens to C Mount Body Adapter" [http://www.amazon.com/Kipon-Canon-Mount-Lens-Adapter/dp/B004THUG6I ASIN: B004THUG6I], list price ~$30 USD

			=== How to build a Canon EOS Lens adapter for Elphel 333 ===
	- Canon EOS Lens with adaptator [http://community.elphel.com/pictures/jmfcontrib/jmf_canon_adap1.JPG] [http://community.elphel.com/pictures/jmfcontrib/jmf_canon_adapt2.JPG]		- Canon EOS Lens with adaptator [http://community.elphel.com/pictures/jmfcontrib/jmf_canon_adap1.JPG] [http://community.elphel.com/pictures/jmfcontrib/jmf_canon_adapt2.JPG]

Line 367:		Line 370:

	Expensive project of Adaptor to use EOS Lens can be find on net [http://www.mir.com.my/rb/photography/hardwares/classics/eos/EF-lenses/index.htm]		Expensive project of Adaptor to use EOS Lens can be find on net [http://www.mir.com.my/rb/photography/hardwares/classics/eos/EF-lenses/index.htm]
	or [http://www.birger.com/Merchant2/merchant.mvc?Screen=ef232_home]		or [http://replay.web.archive.org/20090320033850/http://www.birger.com/Merchant2/merchant.mvc?Screen=ef232_home]

	=== Image motion tracking/measurement system ===		=== Image motion tracking/measurement system ===

OneArtPlease at 14:41, 23 November 2009

2009-11-23T14:41:28Z

← Older revision		Revision as of 14:41, 23 November 2009
Line 44:		Line 44:

	=====[[PHP Examples]]=====		=====[[PHP Examples]]=====

			=====[[Binning]]=====

	==== JavaScript library ====		==== JavaScript library ====

Landy: /* JACK audio server for Elphel 353 */

2009-11-17T07:36:48Z

JACK audio server for Elphel 353

← Older revision		Revision as of 07:36, 17 November 2009
Line 103:		Line 103:
	==== JACK audio server for Elphel 353 ====		==== JACK audio server for Elphel 353 ====

	JACK is system for handling real-time, low latency audio. [http://jackaudio.org/, JACK audio web site.]		JACK is system for handling real-time, low latency audio. [http://jackaudio.org/ JACK audio web site.]
	=====[[JACK_in_Elphel_cameras\| Using JACK in Elphel camera]]=====		=====[[JACK_in_Elphel_cameras\| Using JACK in Elphel camera]]=====

Landy: /* JACK audio server for Elphel 353 */

2009-11-17T07:13:54Z

JACK audio server for Elphel 353

← Older revision		Revision as of 07:13, 17 November 2009
Line 104:		Line 104:

	JACK is system for handling real-time, low latency audio. [http://jackaudio.org/, JACK audio web site.]		JACK is system for handling real-time, low latency audio. [http://jackaudio.org/, JACK audio web site.]
			=====[[JACK_in_Elphel_cameras\| Using JACK in Elphel camera]]=====

	=== Client Software ===		=== Client Software ===

Landy: /* JACK audio server for Elphel 353 */

2009-11-17T07:11:50Z

JACK audio server for Elphel 353

← Older revision		Revision as of 07:11, 17 November 2009
Line 103:		Line 103:
	==== JACK audio server for Elphel 353 ====		==== JACK audio server for Elphel 353 ====

	JACK is system for handling real-time, low latency audio.		JACK is system for handling real-time, low latency audio. [http://jackaudio.org/, JACK audio web site.]

	=== Client Software ===		=== Client Software ===

Landy: /* Camera Software */

2009-11-17T07:08:44Z

Camera Software

← Older revision		Revision as of 07:08, 17 November 2009
Line 100:		Line 100:
	==== Control Panel ====		==== Control Panel ====
	The [[Control Panel]] project is a simple page on the cameras to access some commonly used functions, without having to telnet into the camera.		The [[Control Panel]] project is a simple page on the cameras to access some commonly used functions, without having to telnet into the camera.

			==== JACK audio server for Elphel 353 ====

			JACK is system for handling real-time, low latency audio.

	=== Client Software ===		=== Client Software ===

Kimstik at 14:00, 18 November 2008

2008-11-18T14:00:23Z

← Older revision		Revision as of 14:00, 18 November 2008
Line 157:		Line 157:

	==== [[Demosaic on client side]] ====		==== [[Demosaic on client side]] ====
	Our actual FPGA code on the camera uses a very simple algorithm to calculate YCbCr from the Bayer pixels. It uses just a 3x3 block of neighbors. The other point is that this algorithm is time consuming and with the 5MPix sensor the FPGA became the bottleneck. So we have added a special JP4 mode that bypasses the Demosaic in the FPGA and provides an image with pixels in each 16x16 macroblock that are rearranged to separate Bayer colors in individual 8x8 blocks, then encoded as monochrome. Demosaic will be applied during post-processing on the host PC. This section describe different algorithms and implementations used to provide this functionality.		Our actual FPGA code on the camera uses a very simple algorithm to calculate YCbCr from the Bayer pixels. It uses just a 3x3 block of neighbors. The other point is that this algorithm is time consuming and with the 5MPix sensor the FPGA became the bottleneck. So we have added a special [[JP4]] mode that bypasses the Demosaic in the FPGA and provides an image with pixels in each 16x16 macroblock that are rearranged to separate Bayer colors in individual 8x8 blocks, then encoded as monochrome. Demosaic will be applied during post-processing on the host PC. This section describe different algorithms and implementations used to provide this functionality.

	== [[Network configuration]] ==		== [[Network configuration]] ==

OneArtPlease: /* ElphelSoftwareKit */

2008-10-01T13:21:21Z

[[ElphelSoftwareKit]]

← Older revision		Revision as of 13:21, 1 October 2008
Line 153:		Line 153:

	It can be useful for hardware/fpga developers too - to be able to write some code to support the hardware features without spending too much time on mastering the software development process.		It can be useful for hardware/fpga developers too - to be able to write some code to support the hardware features without spending too much time on mastering the software development process.

			==== [[353_firmware_upgrade_procedure \| 353 Firmware Upgrade Guide]] ====

	==== [[Demosaic on client side]] ====		==== [[Demosaic on client side]] ====