Hot pixel mapping for the C-2100 UZ works!

Started Sep 5, 2003 | Discussions
Mocha_hk New Member • Posts: 20
Re: USB for the C-2100 UZ in XP

Maybe I will give it a try, but what exactly is the remap theory?

corhoin wrote:

Mocha_hk wrote:

I tried it on my E100RS, when I used the "Read pixels" function, it
gave me these:

OLYMPUS E-100RS 1.00
Reading the defect pixels.
Elapsed time: 1 sec (100%).
Read 0 defect pixels.

I think the program may not be able to read the E100RS 28MHz CCD,
so I decided not to try the remap function because nobody knows
what is going to happen!!

This is exactly what usually happens with my C-2100UZ also. The
reading function does not read the CCD, it only reads the already
saved hot pixels from the camera's memory. The reading thing
doesn't always work, yet the remapping seems to work. Besides, it's
the camera that reads the CCD (with its shutter being automatically
closed) when remapping, not the computer. The PC only triggers the
same internal command that's been included in the newer models'
user interface, and displays the log the camera sends to it.

Cheers,

Vesa
--
Corhoin Wizardonik Customworks, Finland

-- hide signature --

E-100RS

Inigo Montoya Forum Pro • Posts: 13,586
Worse results after remapping?

Unless you got your image labels backwards, I see a lot more noise/hot pixels in the "after" shots taken at 16 seconds for both ISO 100 and 400.

The 4 second exposures do seem improved, and I guess it's worth the trade off at the extra-long end of the exposure range unless you're into 16 second night/astro shots?

James H. wrote:

I made a serial cable using a Radio Shack 3/32" Stereo Phone Plug
on one end a female DB9 connector. Soldered all pins exactly as
diagramed from the link provided by Corhoin
( http://forums.dpreview.com/forums/read.asp?forum=1008&message=6031586 )

James H. Contributing Member • Posts: 719
Re: Worse results after remapping?

Yes, I did noticed what you saw.

The pix you saw from my dotphoto album is limited because of the size you were able to view.

At 1600x1200, the iso 400, 16s in the "before" pic gave lots of noise with pronounced levels of intensity, size, colors and tend to appear in clumps at spots throughout the picture.

After running the program, you see more noise but they are pretty much all about the same level of intensity and size with less differences in colors and are evenly distributed throughout the entire area of the picture.

Maybe what it is after the remapping is what it is supposed to be like. And again maybe it did actually gotton worse. I'm not sure (Any one have an idea here?).

In any case, I am pleased that at 4 sec and at any ISO, I no longer get the 3 or 4 bright hot pixel that used to appear in the picture at even 1/2 sec. If it is a trade-off then I'd gladly take it because I do 95% of my picture taking at faster than 1 second.

Inigo Montoya wrote:
Unless you got your image labels backwards, I see a lot more
noise/hot pixels in the "after" shots taken at 16 seconds for both
ISO 100 and 400.
The 4 second exposures do seem improved, and I guess it's worth the
trade off at the extra-long end of the exposure range unless you're
into 16 second night/astro shots?

James H. wrote:

I made a serial cable using a Radio Shack 3/32" Stereo Phone Plug
on one end a female DB9 connector. Soldered all pins exactly as
diagramed from the link provided by Corhoin
( http://forums.dpreview.com/forums/read.asp?forum=1008&message=6031586 )

-- hide signature --

James H.
Oly C2100Uzi & Oly C-3000z (until I sell it)

OP corhoin New Member • Posts: 16
Re: Worse results after remapping?

Inigo Montoya wrote:

Unless you got your image labels backwards, I see a lot more
noise/hot pixels in the "after" shots taken at 16 seconds for both
ISO 100 and 400.
The 4 second exposures do seem improved, and I guess it's worth the
trade off at the extra-long end of the exposure range unless you're
into 16 second night/astro shots?

The 16-second results depend very much on the temperature of the camera. If the camera has been on for some time, the CCD and other electronic parts are very warm. Now there's much more noise in long exposures than right after turning the camera on after a half-hour break. It's called thermal noise, and can't be avoided by mapping out the noisy pixels, as they are all more or less noisy. The only way to avoid this is to cool the CCD somehow, e.g. with a peltier cooler like in real astro applications.

It looks to me that the erratic pixels are gone in these pics, and there's only noise left.

If you really want to take low-noise 16-second pictures with an UZI, the final noise could be easily reduced by taking a dark calibration shot with the lens cover on just after every "real pic" - just like the noise reduction function in new cameras. After this you could use the Mediachance BlackFrame NR software to eliminate most of the noise. It can also be used to reduce the effect of real "hot" or "stuck" pixels, but the sharpening and JPEG compression won't make your job easier at all - that's why it's better to eliminate the faulty pixels or pixel groups before any further image processing.

Cheers,

Vesa
--
Corhoin Wizardonik Customworks, Finland

Corne Senior Member • Posts: 1,595
Stuck pixel mapping for the C-3000z works!

Well I didn't really have much of a problem yet, but I decided to give it a go.
couple of 16s exposures to warm up the ccd
before shot, iso400 1/10s (big)

http://www.imagestation.com/picture/sraid79/p365ec01ea483403c7b170bb8d6931abe/fb1e2b89.jpg.orig.jpg
ran the program
some more 16s exposures
after shot, iso400 1/10s (big)

I can see 2 obvious hot/stuck pixels (purple and green) in the before shot that are gone in the after shot. Think I'll try to find one of those serial cables for the next time I need remapping (a colleague was nice enough to lend me the one I used)
Thank you Vesa and that russian programmer

Corne Senior Member • Posts: 1,595
Watch it, large pic in message above!

Had a little accident with the keyboard. Sorry bout that

Corne wrote:

Well I didn't really have much of a problem yet, but I decided to
give it a go.
couple of 16s exposures to warm up the ccd
before shot, iso400 1/10s (big)

http://www.imagestation.com/picture/sraid79/p365ec01ea483403c7b170bb8d6931abe/fb1e2b89.jpg.orig.jpg
ran the program
some more 16s exposures
after shot, iso400 1/10s (big)

http://www.imagestation.com/picture/sraid79/pc22eb1c9cfdeadeff6276a75916df97d/fb1e2c0d.jpg.orig.jpg

I can see 2 obvious hot/stuck pixels (purple and green) in the
before shot that are gone in the after shot. Think I'll try to find
one of those serial cables for the next time I need remapping (a
colleague was nice enough to lend me the one I used)
Thank you Vesa and that russian programmer

Brian Steele Contributing Member • Posts: 638
It woiks! It woiks!

I "borrowed" a serial cable from an old Olympus that we had hanging around the office, and ran the utility. What a difference! Highly recommended.

http://www.spiceisle.com/brian/personal/misc/remap/

 Brian Steele's gear list:Brian Steele's gear list
Olympus C-2100 UZ Olympus E-520 Olympus E-620 Olympus PEN E-PL5 Olympus Zuiko Digital ED 12-60mm 1:2.8-4.0 SWD +9 more
stevegriz Junior Member • Posts: 48
Re: It woiks! It woiks!

I am having problems. The program connects and I get the following info..
SR95A
Firmware: v352u-73
SN: 00000001

Obviously the SN is incorrect. When I read it gives me 0 and when I tell it to remap it takes 60 sec and says it is done but the shutter keeps clicking. I stop it and turn the camera off and back on and reconnect and it still says 0.

I do have a green dot in all of my pics even when cold so I know there should be some mapped.

Any suggestions.

Rich-D Regular Member • Posts: 326
Serail Cable Compatability Q....

Anyone know....Would a serial cable from a C-1400L/D-600 work on the Uzi? There is one on Ebay for $2 AU plus $6.50 AU shipping to Canada. So less than $7USD total I think.
--
©º°¨¨°º©©º°¨¨°º© C-2100 UZi owner ©º°¨¨°º©©º°¨¨°º©

OP corhoin New Member • Posts: 16
Re: It woiks! It woiks!

stevegriz wrote:

I am having problems. The program connects and I get the following
info..
SR95A
Firmware: v352u-73
SN: 00000001

Obviously the SN is incorrect. When I read it gives me 0 and when I
tell it to remap it takes 60 sec and says it is done but the
shutter keeps clicking. I stop it and turn the camera off and back
on and reconnect and it still says 0.

Just try it again - it should work then. The program is obviously trying to communicate with the camera, but can't get the remapping command through.

This similar repetitive clicking (not from the shutter I think) often occurs also with other software - like the Pine Tree camera controller, and it happens when the computer tries and tries to communicate with the camera.

With the remapping program there should be a clearly different kind of "click" to be heard: the shutter closes first and after ten seconds or so it will open once again when everything is done. Now you should get a report of the remapped pixels on your screen.

Cheers,

Vesa
--
Vesa T. Korhonen
Corhoin Wizardonik Customworks, Finland

Jola Senior Member • Posts: 2,212
Re: Serail Cable Compatability Q....

As far as I know Olympus never changed their serial cable - so it should work.

The last Olympus that had a serial port is the C-3030z as far as I know (3030 had USB (not mass storage) AND serial!).

Rich-D wrote:

Anyone know....Would a serial cable from a C-1400L/D-600 work on
the Uzi? There is one on Ebay for $2 AU plus $6.50 AU shipping to
Canada. So less than $7USD total I think.
--
©º°¨¨°º©©º°¨¨°º© C-2100 UZi owner ©º°¨¨°º©©º°¨¨°º©

Corne Senior Member • Posts: 1,595
Re: Serail Cable Compatability Q....

I think Jola is right. Fwiw, I borrowed the one I used from a colleague, who has a D490 I think.

Rich-D wrote:

Anyone know....Would a serial cable from a C-1400L/D-600 work on
the Uzi? There is one on Ebay for $2 AU plus $6.50 AU shipping to
Canada. So less than $7USD total I think.
--
©º°¨¨°º©©º°¨¨°º© C-2100 UZi owner ©º°¨¨°º©©º°¨¨°º©

stevegriz Junior Member • Posts: 48
Re: It woiks! It woiks!

I still cannot get it to remap. I wonder if anyone else has gotten theirs to work with firmware 73. This is an older version and maybe that is the problem?

corhoin wrote:

Just try it again - it should work then. The program is obviously
trying to communicate with the camera, but can't get the remapping
command through.

This similar repetitive clicking (not from the shutter I think)
often occurs also with other software - like the Pine Tree camera
controller, and it happens when the computer tries and tries to
communicate with the camera.

With the remapping program there should be a clearly different kind
of "click" to be heard: the shutter closes first and after ten
seconds or so it will open once again when everything is done. Now
you should get a report of the remapped pixels on your screen.

Cheers,

Vesa
--
Vesa T. Korhonen
Corhoin Wizardonik Customworks, Finland

-- hide signature --

Just having fun and learning with my 2100

HOLLAND STJOHN Forum Member • Posts: 78
Try warming the camera

I've remapped 3 UZIs and a C2020Z and found that if the remap gives repeated "60 second" messages that warming the camera slightly will cause the remap to progress.

Turn on your camera, turn off sleep in the menus, turn on the lcd monitor, wrap the turned on camera in a blanket for 5 minutes, then run the remap with the warmed camera.

Holland

stevegriz wrote:

I still cannot get it to remap. I wonder if anyone else has gotten
theirs to work with firmware 73. This is an older version and maybe
that is the problem?

-- hide signature --

Holland
C21oo(2 UZIs, just in case...), B3oo, E1ooRS, FL-4o

fmoore Veteran Member • Posts: 7,669
d490 remapping?

Would this remapping work with the d490 or only with oly c series?

Corne wrote:
I think Jola is right. Fwiw, I borrowed the one I used from a
colleague, who has a D490 I think.

Rich-D wrote:

Anyone know....Would a serial cable from a C-1400L/D-600 work on
the Uzi? There is one on Ebay for $2 AU plus $6.50 AU shipping to
Canada. So less than $7USD total I think.
--
©º°¨¨°º©©º°¨¨°º© C-2100 UZi owner ©º°¨¨°º©©º°¨¨°º©

-- hide signature --

Fred

Corne Senior Member • Posts: 1,595
Re: d490 remapping?

That's sort of what I asked, 'will this work on the c3000 or only on the Uzi'. I got this reply http://forums.dpreview.com/forums/read.asp?forum=1008&message=6056695

Up to you if you want to give it a try. It's quite possible it will work for the D490. I did show the before/after shots to my colleague, but that's probably the first time he saw stuck pixels. So he'll probably not try remapping his D490 (yet).

fmoore wrote:

Would this remapping work with the d490 or only with oly c series?

Mocha_hk New Member • Posts: 20
Re: USB for the C-2100 UZ in XP

Confirmed not work with E-100RS. I received this after trying the remap function:
Remapping the defect pixels.
Remap complete. (46 sec)
Result is undefined.

I checked the log file and all procedures returned a value. Too bad it doesn't work with my firework ezi.

Mocha_hk wrote:
Maybe I will give it a try, but what exactly is the remap theory?

corhoin wrote:

Mocha_hk wrote:

I tried it on my E100RS, when I used the "Read pixels" function, it
gave me these:

OLYMPUS E-100RS 1.00
Reading the defect pixels.
Elapsed time: 1 sec (100%).
Read 0 defect pixels.

I think the program may not be able to read the E100RS 28MHz CCD,
so I decided not to try the remap function because nobody knows
what is going to happen!!

This is exactly what usually happens with my C-2100UZ also. The
reading function does not read the CCD, it only reads the already
saved hot pixels from the camera's memory. The reading thing
doesn't always work, yet the remapping seems to work. Besides, it's
the camera that reads the CCD (with its shutter being automatically
closed) when remapping, not the computer. The PC only triggers the
same internal command that's been included in the newer models'
user interface, and displays the log the camera sends to it.

Cheers,

Vesa
--
Corhoin Wizardonik Customworks, Finland

-- hide signature --

E-100RS

Rich-D Regular Member • Posts: 326
I did it and IT WORKED [pics]

Read Pixels:

SR95A
FIRMWARE: v352u-73
S/N: #00000001
Reading the defect pixels.
Elapsed time: 25 sec (100%).
Read 16 defect pixels.
1 1299 593
2 1241 407
3 1226 1103
4 448 64
5 342 152
6 1162 542
7 233 444
8 368 357
9 139 691
10 1101 760
11 1482 383
12 720 33
13 420 517
14 518 393
15 209 715
16 304 139

Remap Pixels:

Remapping the defect pixels.
Remap complete. (23 sec)
It's been found 512 defect pixels.

You will see the bright blue and green pixels that were apparent in every pic I took. These 2 pixels are the reason I wanted to do this in the first place really.

All crops are from the same corner of the ccd (bottom right) at approx. the same size (within a few pixels)
Here are the results:
Lots of Hot Pixels here
16 sec ISO 100 5 min warmup %100crop

Better, but the remapped pixels are showing some while warm
16 sec ISO 100 right after remap still warm %100 crop

Really, only the 2 that were bothering me showing here
16 Sec ISO 100 cold %100 crop

GONE GONE GONE
16 sec ISO 100 16 after remap cold %100 crop

-- hide signature --

©º°¨¨°º©©º°¨¨°º© C-2100 UZi owner ©º°¨¨°º©©º°¨¨°º©

littleflurry aka Jenn Z. Senior Member • Posts: 2,127
which version should I use?

gonna try it on my c-2100uz...

Rich-D wrote:

Read Pixels:

SR95A
FIRMWARE: v352u-73
S/N: #00000001
Reading the defect pixels.
Elapsed time: 25 sec (100%).
Read 16 defect pixels.
1 1299 593
2 1241 407
3 1226 1103
4 448 64
5 342 152
6 1162 542
7 233 444
8 368 357
9 139 691
10 1101 760
11 1482 383
12 720 33
13 420 517
14 518 393
15 209 715
16 304 139

Remap Pixels:

Remapping the defect pixels.
Remap complete. (23 sec)
It's been found 512 defect pixels.

You will see the bright blue and green pixels that were apparent in
every pic I took. These 2 pixels are the reason I wanted to do this
in the first place really.
All crops are from the same corner of the ccd (bottom right) at
approx. the same size (within a few pixels)
Here are the results:
Lots of Hot Pixels here
16 sec ISO 100 5 min warmup %100crop

Better, but the remapped pixels are showing some while warm
16 sec ISO 100 right after remap still warm %100 crop

Really, only the 2 that were bothering me showing here
16 Sec ISO 100 cold %100 crop

GONE GONE GONE
16 sec ISO 100 16 after remap cold %100 crop

-- hide signature --
Rich-D Regular Member • Posts: 326
Jenn.....

use this one http://e2500.narod.ru/cpixmap_v0.12.zip

littleflurry aka Jenn Z. wrote:

gonna try it on my c-2100uz...

-- hide signature --

©º°¨¨°º©©º°¨¨°º© C-2100 UZi owner ©º°¨¨°º©©º°¨¨°º©

Keyboard shortcuts:
FForum MMy threads