SkippingBinning - Revision history

Andrey.filippov: /* Binning Modes */

2011-01-25T22:56:30Z

Binning Modes

← Older revision		Revision as of 22:56, 25 January 2011
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	http://cameraIP/parsedit.php?embed=0.18&DCM_HOR&DCM_VERT&BIN_HOR&BIN_VERT		http://cameraIP/parsedit.php?embed=0.18&DCM_HOR&DCM_VERT&BIN_HOR&BIN_VERT

	Yes it is possible to change some of the camera parameters by modifying directly the values of the sensor registers, but this is designed to be used for development/testing/experimentation, until some particular parameter is supported by the camera driver. When the decimation is modified, camera needs to program the FPGA compressor accordingly, the JPEG headers have to be modified too. Additionally software takes care of the camera pipeline latency - compressor has to be programmed to different image size at exact frame - all that happens when the higher level parameters are modified. And of course, different sensors have different registers that control binning and decimation, different values/combinations of values are allowed for these parameters - driver validates the values using of sensor capabilities tables, no validation, pipeline synchronization happens when the sensor registers are modified directly. --[[User:Andrey.filippov\|Andrey.filippov]] 22:32, 25 January 2011 (UTC)		Yes it is possible to change some of the camera parameters by modifying directly the values of the sensor registers, but this is designed to be used for development/testing/experimentation, until some particular parameter is supported by the camera driver. When the decimation is modified, camera needs to program the FPGA compressor accordingly, the JPEG headers have to be modified too. Additionally software takes care of the camera pipeline latency - compressor has to be programmed to different image size at exact frame - all that happens when the higher level parameters are modified. And of course, different sensors have different registers that control binning and decimation, different values/combinations of values are allowed for these parameters - driver validates the values using of sensor capabilities tables; no validation, pipeline synchronization happens when the sensor registers are modified directly. --[[User:Andrey.filippov\|Andrey.filippov]] 22:32, 25 January 2011 (UTC)

Andrey.filippov: /* Binning Modes */

2011-01-25T22:55:31Z

Binning Modes

← Older revision		Revision as of 22:55, 25 January 2011
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	echo elphel_get_P_value(ELPHEL_SENSOR_REGS+32);		echo elphel_get_P_value(ELPHEL_SENSOR_REGS+32);

	'''Note: correct way to control binning and decimation in the camera:'''		'''Note: correct way to control binning and decimation in the camera'''
			[[Image:Bin_decim_cntrl.png\|thumb\|Image control panel]] You may control the binning and decimation of the camera sensor using the camera control interface (camvc). These for parameters:
			DCM_HOR, DCM_VERT, BIN_HOR and BIN_VERT
			are also available in parsedit program or from the custom PHP script running in the camera :

	http://cameraIP/parsedit.php?embed=0.18&DCM_HOR&DCM_VERT&BIN_HOR&BIN_VERT		http://cameraIP/parsedit.php?embed=0.18&DCM_HOR&DCM_VERT&BIN_HOR&BIN_VERT

	Yes it is possible to change some of the camera parameters by ~~changing~~ values of the sensor registers, but this ~~way~~ is ~~mostly~~ used for development/experimentation, until some particular parameter is supported by the camera driver. When the decimation is modified, camera needs to program the FPGA compressor accordingly, the JPEG headers have to be modified too. Additionally software takes care of the camera pipeline latency - compressor has to be programmed to different image size at exact frame - all that happens when the higher level parameters are modified. And of course, different sensors have different registers that control binning and decimation, different values/combinations of values are allowed for these parameters - driver validates the values using of sensor capabilities tables, no validation, pipeline synchronization happens when the sensor registers are modified directly. --[[User:Andrey.filippov\|Andrey.filippov]] 22:32, 25 January 2011 (UTC)		Yes it is possible to change some of the camera parameters by modifying directly the values of the sensor registers, but this is designed to be used for development/testing/experimentation, until some particular parameter is supported by the camera driver. When the decimation is modified, camera needs to program the FPGA compressor accordingly, the JPEG headers have to be modified too. Additionally software takes care of the camera pipeline latency - compressor has to be programmed to different image size at exact frame - all that happens when the higher level parameters are modified. And of course, different sensors have different registers that control binning and decimation, different values/combinations of values are allowed for these parameters - driver validates the values using of sensor capabilities tables, no validation, pipeline synchronization happens when the sensor registers are modified directly. --[[User:Andrey.filippov\|Andrey.filippov]] 22:32, 25 January 2011 (UTC)

Andrey.filippov: /* Binning Modes */

2011-01-25T22:32:33Z

Binning Modes

← Older revision		Revision as of 22:32, 25 January 2011
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	Using PHP you can access this register with:		Using PHP you can access this register with:
	echo elphel_get_P_value(ELPHEL_SENSOR_REGS+32);		echo elphel_get_P_value(ELPHEL_SENSOR_REGS+32);

			'''Note: correct way to control binning and decimation in the camera:'''
			http://cameraIP/parsedit.php?embed=0.18&DCM_HOR&DCM_VERT&BIN_HOR&BIN_VERT

			Yes it is possible to change some of the camera parameters by changing values of the sensor registers, but this way is mostly used for development/experimentation, until some particular parameter is supported by the camera driver. When the decimation is modified, camera needs to program the FPGA compressor accordingly, the JPEG headers have to be modified too. Additionally software takes care of the camera pipeline latency - compressor has to be programmed to different image size at exact frame - all that happens when the higher level parameters are modified. And of course, different sensors have different registers that control binning and decimation, different values/combinations of values are allowed for these parameters - driver validates the values using of sensor capabilities tables, no validation, pipeline synchronization happens when the sensor registers are modified directly. --[[User:Andrey.filippov\|Andrey.filippov]] 22:32, 25 January 2011 (UTC)

OneArtPlease at 08:53, 25 January 2011

2011-01-25T08:53:09Z

← Older revision		Revision as of 08:53, 25 January 2011
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	But be careful: Binning/Decimation effectively result in a certain amount of subsampling artifacts.		But be careful: Binning/Decimation effectively result in a certain amount of subsampling artifacts.

			{\| border="0" cellpadding="2"
			\|-
			\| [[Image:Fullres_200zoom.jpg\|thumb\|200% Zoom - NO Skipping/Binning]] \|\| [[Image:Skipping_200zoom.jpg\|thumb\|200% Zoom - with Skipping (2x2), NO Binning]] \|\| [[Image:Binningandskipping_200zoom.jpg\|thumb\|200% Zoom - with Skipping (2x2), with Binning (2x2)]]
			\|-
			\|}

	==Binning Modes==		==Binning Modes==

OneArtPlease: /* Articles describing "Binning" */

2011-01-24T20:29:19Z

Articles describing "Binning"

← Older revision		Revision as of 20:29, 24 January 2011
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	Using both skipping and binning at the same time reduces subsampling artifacts but does not eliminate them completely.		Using both skipping and binning at the same time reduces subsampling artifacts but does not eliminate them completely.

	==~~Articles~~ describing "Binning"==		==Article describing "Binning"==

	~~http://www.ccd.com/ccd103.html~~

	~~http://www.imagingu.com/articles/binning.html~~

	http://www.echenique.com/index.php/2009/05/16/phaseone-sensor-pixel-binning-and-the-future-of-digital-photography/		http://www.echenique.com/index.php/2009/05/16/phaseone-sensor-pixel-binning-and-the-future-of-digital-photography/

	~~http://www.ptgrey.com/support/kb/index.asp?a=4&q=163~~

	==Pixel Binning in Elphel Cameras==		==Pixel Binning in Elphel Cameras==

OneArtPlease at 20:20, 24 January 2011

2011-01-24T20:20:17Z

← Older revision		Revision as of 20:20, 24 January 2011
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	=Skipping=		=Skipping=
	Also called "Decimation" means that a certain amount of photosites is not read out ->skipped (horizontally, vertically or in both axis). This reduces resolution of the resulting image but introduces subsampling artifacts. This is an on-sensor-feature.		Also called "Decimation", means that a certain amount of photosites is not read out ->skipped (horizontally, vertically or in both axis). This reduces resolution of the resulting image but introduces subsampling artifacts. This is an on-sensor-feature.


	=Binning=		=Binning=
	~~'''~~Pixel Binning~~'''~~ refers to the method of combining (averaging or summing) charges of blocks of neighbouring same-color-photosites. This is an on-sensor-feature.		Pixel Binning refers to the method of combining (averaging or summing) charges of blocks of neighbouring same-color-photosites. This is an on-sensor-feature.

	Using both skipping and binning at the same time reduces subsampling artifacts but does not eliminate them completely.		Using both skipping and binning at the same time reduces subsampling artifacts but does not eliminate them completely.

OneArtPlease at 20:19, 24 January 2011

2011-01-24T20:19:49Z

← Older revision		Revision as of 20:19, 24 January 2011
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	=~~What is it?~~=		=Skipping=
	~~'''Pixel Binning''' refers to the method~~ of ~~combining blocks~~ of ~~photosites on~~ the ~~sensor into a bigger "virtual" photosite~~. This is an on-sensor-feature.		Also called "Decimation" means that a certain amount of photosites is not read out ->skipped (horizontally, vertically or in both axis). This reduces resolution of the resulting image but introduces subsampling artifacts. This is an on-sensor-feature.

	==Articles describing "Binning" ~~(also sometimes refered to as "Pixel Binning")~~==
			=Binning=
			'''Pixel Binning''' refers to the method of combining (averaging or summing) charges of blocks of neighbouring same-color-photosites. This is an on-sensor-feature.

			Using both skipping and binning at the same time reduces subsampling artifacts but does not eliminate them completely.

			==Articles describing "Binning"==

	http://www.ccd.com/ccd103.html		http://www.ccd.com/ccd103.html
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	==Pixel Binning in Elphel Cameras==		==Pixel Binning in Elphel Cameras==

	Using Binning you can:		Using Skipping/Binning you can:
	* lower the resolution of an image while using ~~a bigger~~ sensor area		* lower the resolution of an image while using the same sensor area
	* achieving higher FPS for the same resulting resolution		* achieving higher FPS for the same resulting resolution
	* decrease image noise (averaging) or increase light sensitivity (summing)		* decrease image noise (averaging) or increase light sensitivity (summing)

	But be careful: Binning/Decimation effectively ~~results~~ in ~~skipped pixels (both horizontally and vertically) meaning smooth lines will be subject to stepping/block artefacts!~~		But be careful: Binning/Decimation effectively result in a certain amount of subsampling artifacts.

	==Binning Modes==		==Binning Modes==

	The "normal" Binning mode averages the charges from photosites ~~in the same "bin"~~ thus reducing noise in the image but not altering light sensitivity.		The "normal" Binning mode averages the charges from photosites thus reducing noise in the image but not altering light sensitivity.
	[http://community.elphel.com/pictures/binning/binning_average.jpeg]		[http://community.elphel.com/pictures/binning/binning_average.jpeg]

OneArtPlease: moved Binning to SkippingBinning

2011-01-24T20:11:07Z

moved Binning to SkippingBinning

← Older revision	Revision as of 20:11, 24 January 2011
(No difference)

OneArtPlease at 19:52, 24 January 2011

2011-01-24T19:52:09Z

← Older revision		Revision as of 19:52, 24 January 2011
Line 1:		Line 1:
			=What is it?=
			'''Pixel Binning''' refers to the method of combining blocks of photosites on the sensor into a bigger "virtual" photosite. This is an on-sensor-feature.

	==Articles describing "Binning" (also sometimes refered to as "Pixel Binning")==		==Articles describing "Binning" (also sometimes refered to as "Pixel Binning")==

Line 9:		Line 12:
	http://www.ptgrey.com/support/kb/index.asp?a=4&q=163		http://www.ptgrey.com/support/kb/index.asp?a=4&q=163

	==Binning in Elphel Cameras==		==Pixel Binning in Elphel Cameras==

			Using Binning you can:
			* lower the resolution of an image while using a bigger sensor area
			* achieving higher FPS for the same resulting resolution
			* decrease image noise (averaging) or increase light sensitivity (summing)

	~~Using~~ Binning ~~you can lower the resolution of an image while using a bigger sensor area as well as achieving higher FPS as well as lower image noise or higher light sensitivity.~~		But be careful: Binning/Decimation effectively results in skipped pixels (both horizontally and vertically) meaning smooth lines will be subject to stepping/block artefacts!

	==Binning Modes==		==Binning Modes==

OneArtPlease at 14:34, 23 November 2009

2009-11-23T14:34:53Z

← Older revision		Revision as of 14:34, 23 November 2009
Line 11:		Line 11:
	==Binning in Elphel Cameras==		==Binning in Elphel Cameras==

	Using Binning you can lower the resolution of an image while using a bigger sensor area as well as achieving higher FPS.		Using Binning you can lower the resolution of an image while using a bigger sensor area as well as achieving higher FPS as well as lower image noise or higher light sensitivity.

	==Binning Modes==		==Binning Modes==
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	[http://community.elphel.com/pictures/binning/binning_sum.jpeg]		[http://community.elphel.com/pictures/binning/binning_sum.jpeg]

	In ~~the~~ Elphel Camera (since 8.X Software) the different binning modes can be set at http://cameraIP/parsedit.php?embed=0.18&SENSOR_REGS32		In Elphel Camera (since 8.X Software) the different binning modes can be set at http://cameraIP/parsedit.php?embed=0.18&SENSOR_REGS32

	The default value is "0x40" which means averaging binning mode.		The default value is "0x40" which means averaging binning mode.
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	If you set it to "0x60" you switch to summing binning mode and will get increased light sensitivity.		If you set it to "0x60" you switch to summing binning mode and will get increased light sensitivity.

	Using PHP you can access ~~these registers~~ with		Using PHP you can access this register with:
	echo elphel_get_P_value(~~SENSOR_REGS~~ + 32);		echo elphel_get_P_value(ELPHEL_SENSOR_REGS+32);