Talk:Known problems - Revision history

Andrey.filippov at 23:02, 25 January 2011

2011-01-25T23:02:58Z

← Older revision		Revision as of 23:02, 25 January 2011
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	--[[User:Andrey.filippov\|Andrey.filippov]] 12:42, 26 August 2006 (CDT)		--[[User:Andrey.filippov\|Andrey.filippov]] 12:42, 26 August 2006 (CDT)

			That problem (only for 3MPix sensors, 5 Mpix did not have it) is fixed in the current code of the 353 camera --[[User:Andrey.filippov\|Andrey.filippov]] 23:02, 25 January 2011 (UTC)

Andrey.filippov at 17:44, 26 August 2006

2006-08-26T17:44:24Z

← Older revision		Revision as of 17:44, 26 August 2006
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	[[Image:binning_2.jpg\|alt text]] <br>		[[Image:binning_2.jpg\|alt text]] <br>
	[[Image:binning_3.jpg\|alt text]] <br>		[[Image:binning_3.jpg\|alt text]] <br>

			'''Vertical lines in binning mode'''

	Yes, it is a known problem. The CMOS sensor in the camera is mounted upside-down, as the board benefited from the fact that 1-2-3MPix sensors by Micron are pin-compatible. The board was designed for 1.3MPix MT9M001 that did have flip-x and flip-y features (as most other CMOS sensors) so there was no problems to mount the sensor 180 degrees - I was just optimizing the PCB layout. In 3MPix sensors these mirroring features where dropped (at least from the datasheet available online on their web site). Fortunately it turned out that it is possible to mirror images (I just tried undocumented bits in different registers), but horizontal binning with horizontal flip (default) does not work.		Yes, it is a known problem. The CMOS sensor in the camera is mounted upside-down, as the board benefited from the fact that 1-2-3MPix sensors by Micron are pin-compatible. The board was designed for 1.3MPix MT9M001 that did have flip-x and flip-y features (as most other CMOS sensors) so there was no problems to mount the sensor 180 degrees - I was just optimizing the PCB layout. In 3MPix sensors these mirroring features where dropped (at least from the datasheet available online on their web site). Fortunately it turned out that it is possible to mirror images (I just tried undocumented bits in different registers), but horizontal binning with horizontal flip (default) does not work.

Andrey.filippov at 17:42, 26 August 2006

2006-08-26T17:42:37Z

← Older revision		Revision as of 17:42, 26 August 2006
Line 19:		Line 19:
	[[Image:binning_2.jpg\|alt text]] <br>		[[Image:binning_2.jpg\|alt text]] <br>
	[[Image:binning_3.jpg\|alt text]] <br>		[[Image:binning_3.jpg\|alt text]] <br>

			Yes, it is a known problem. The CMOS sensor in the camera is mounted upside-down, as the board benefited from the fact that 1-2-3MPix sensors by Micron are pin-compatible. The board was designed for 1.3MPix MT9M001 that did have flip-x and flip-y features (as most other CMOS sensors) so there was no problems to mount the sensor 180 degrees - I was just optimizing the PCB layout. In 3MPix sensors these mirroring features where dropped (at least from the datasheet available online on their web site). Fortunately it turned out that it is possible to mirror images (I just tried undocumented bits in different registers), but horizontal binning with horizontal flip (default) does not work.

			Quick fix - turn the camera upside-down and unselect mirroring.

			--[[User:Andrey.filippov\|Andrey.filippov]] 12:42, 26 August 2006 (CDT)

Jmf at 17:29, 26 August 2006

2006-08-26T17:29:06Z

← Older revision		Revision as of 17:29, 26 August 2006
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	Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)		Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)

	--[[User:~~Jean-Marc.fages~~]] 26 august 2006		--[[User:Jmf]] 26 august 2006

	3 pictures just to illustrate known problems of CMOS with binning <br>		3 pictures just to illustrate known problems of CMOS with binning <br>

Jmf at 17:26, 26 August 2006

2006-08-26T17:26:03Z

← Older revision		Revision as of 17:26, 26 August 2006
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	Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)		Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)

	--[[User:Jean-Marc ~~FAGES~~]] 26 august 2006		--[[User:Jean-Marc.fages]] 26 august 2006

	~~Just~~ to illustrate ~~problem~~ of CMOS with binning		3 pictures just to illustrate known problems of CMOS with binning <br>
	[[Image:binning_1.jpg\|alt text]] <br>		[[Image:binning_1.jpg\|alt text]] <br>
	[[Image:binning_2.jpg\|alt text]] <br>		[[Image:binning_2.jpg\|alt text]] <br>
	[[Image:binning_3.jpg\|alt text]] <br>		[[Image:binning_3.jpg\|alt text]] <br>

Jmf at 17:24, 26 August 2006

2006-08-26T17:24:24Z

← Older revision		Revision as of 17:24, 26 August 2006
Line 13:		Line 13:
	Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)		Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)

			--[[User:Jean-Marc FAGES]] 26 august 2006

	Just to illustrate problem of CMOS with binning		Just to illustrate problem of CMOS with binning
	[[Image:binning_1.jpg\|alt text]]		[[Image:binning_1.jpg\|alt text]] <br>
	[[Image:binning_2.jpg\|alt text]]		[[Image:binning_2.jpg\|alt text]] <br>
	[[Image:binning_3.jpg\|alt text]]		[[Image:binning_3.jpg\|alt text]] <br>

Jmf at 17:22, 26 August 2006

2006-08-26T17:22:01Z

← Older revision		Revision as of 17:22, 26 August 2006
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	Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)		Now it is gone --[[User:Andrey.filippov\|Andrey.filippov]] 03:57, 22 November 2005 (CST)



			Just to illustrate problem of CMOS with binning
			[[Image:binning_1.jpg\|alt text]]
			[[Image:binning_2.jpg\|alt text]]
			[[Image:binning_3.jpg\|alt text]]

Andrey.filippov at 09:57, 22 November 2005

2005-11-22T09:57:05Z

New page

Just noticed - all MJPEG versions of 333 code (at least from v 6.3.4) skip each other frame, so the actual fps is just 1/2 of that of the sensor. Theora version works fine, I also remember fixing that for the 313 cameras. And so far nobody (including me) noticed that (or at least told me).

I'll work full speed on this issue, it is most likely caused by missing interrupts.

--[[User:Andrey.filippov|Andrey.filippov]] 19:10, 21 November 2005 (CST)
'''Found it''', will fix shortly. It was because only 2 extra lines were added to frame to accomodate 18x18tiles for 16x16 MCUs (how it was in 313), not 4 for 20x20 tiles. So compressor was waiting for the last 2 lines that came only with the new frame - too late.

So I'll test the fixed code, but still sensor driver need a complete rebuild - it is too messy by now after many modifications fro new sensors and cameras. So now period calculation is not correct when binning is used (and not all the data is in the Micron datasheet as actually binning works for up to 8, not just 3 as they write.
We also need to make a cleaner driver as more sensors aree coming soon - and they will have different controls.

--[[User:Andrey.filippov|Andrey.filippov]] 02:10, 22 November 2005 (CST)

Now it is gone --[[User:Andrey.filippov|Andrey.filippov]] 03:57, 22 November 2005 (CST)