Problem on Image Int. persists!!!"God Bless the Ctrl button!!!"

[pmesquita]

Hello all,

after my previous frustrated outburst I finally cooled down and started to listen (bought them) to warrens videos.

I have encountered my 1st obstacle on Batch Processing and I can't seem to find any Canon official info on this: finding out which my 600D Bayer pattern.
On Warrens' video #7 The De-bayer area of Batch *Processing asks for a choice of the Bayer pattern of my camera. It's a Canon 600d and the drop box on PI has 4 options (RGGB, BGGR, GBRB, GRBG)


On the box below, in the same section, I need to choose one of three Be-bayer methods too:
SUPER PIXEL, BILINEAR AND VNG

can someone help me with this? Maybe there's a website that tells me what the Bayer pattern on my 600D is...

cheers and thatnks for reading
Paulo

[Nocturnal]

Hi,

this method can be used with any debayer software, including PI:

http://qhy8.wikispaces.com/How+do+I+verify+my+colors+are+correct%3F

As for the correct method you'll probably want to try VNG and Bilinear and see how they compare for your data. If there was one optimal way to do it for every case then that would be the only method provided.

[pmesquita]

Hello again,

thanks for the tip. I did the easy part: photographing your three color squares as you said to do. After that I was lost. I'm not at all familiar with DSS (struggling with PI is enough:-)))...and I have now 3 CR2 images with me but I don't understand on how to de-bayer the Green, Red and Blue images on PI.

I op+en the images, I go to Batch de-bayer...but then the menu asks me to choose a mosaic...and that's exactly my initial problem...I don't know which mosaic pattern is my 600D correct one.

I'm really stuck on this one and I'd like to do exactly as Warren is saying on his video.

cheers
paulo

[ZephanRC]

I'm rather new to using PI myself, and had trouble finding anywhere online what the bayer  pattern is for my T3i (600D), but I noticed that when PI imports my RAW files the process console shows that PI sees the pattern as RGGB.  That is what I have been using.

[Nocturnal]

As I said, the method can be used with any debayer software. I wrote it for DSS but it can be used with PI as well.

[ZephanRC]

Hello again,

thanks for the tip. I did the easy part: photographing your three color squares as you said to do. After that I was lost. I'm not at all familiar with DSS (struggling with PI is enough:-)))...and I have now 3 CR2 images with me but I don't understand on how to de-bayer the Green, Red and Blue images on PI.

I op+en the images, I go to Batch de-bayer...but then the menu asks me to choose a mosaic...and that's exactly my initial problem...I don't know which mosaic pattern is my 600D correct one.

I'm really stuck on this one and I'd like to do exactly as Warren is saying on his video.

cheers
paulo

If I understand what Nocturnal is doing here....   Once you have the three (R,G,B) RAW files then you want to load them into PI (you need to set the RAW format to not interpolate or debayer "http://pixinsight.com/forum/index.php?action=dlattach;topic=2570.0;attach=1351;image").  Then you can use the DeBayer Process to debayer the three images right in PI without saving new files (BatchDebayer Script).  The three images should look Red, Green and Blue respectively if you picked the right patter in the Debayer process.  If they don't look R,G&B then undo and try a different Bayer pattern.

[pfile]

it's RGGB. all canon cameras are RGGB.

as for debayer methods, i suppose that's a personal choice - whatever yields the best results on the particular DSO you have shot.

[ZephanRC]

By the way, in the RAW format preferences, I actually use the "RAW Bayer CFA" option versus the "RAW Bayer RGB" so that PI imports them into a single monochrome/grayscale versus separate RGM planes, but the DeBayer process, I believe, should debayer either the CFA or RGB Bayer images.  I'm not at home to try this on my computer with PI, but I hope that I am telling you the right things.

[ZephanRC]

it's RGGB. all canon cameras are RGGB.

as for debayer methods, i suppose that's a personal choice - whatever yields the best results on the particular DSO you have shot.

Thanks pfile for the confirmation...  I thought they were RGGB.

[chris_todd]

When you do the STF, try unlinking the channels (it's one of the icons on the left hand side of the STF dialog box).

[Nocturnal]

There are 4 debayer options. Two are clearly wrong as they leave a checker pattern so that leaves only 2 options. It should not be a big deal to figure out which one to use. After debayering your colors will suck (for lack of a better word). You can expect your images to be green because DSLRs and most OSC sensors are optimized for green.

Learn about the powerful color correction processes PI offers. Debayering will -not- get you natural color.

http://carpephoton.com/index.php?option=com_content&view=article&id=31

and

http://qhy8.wikispaces.com/How+do+I+verify+my+colors+are+correct%3F

[pmesquita]

hello again,

I really need help on this. I've tried everything and the linear image comes out green after Image Integration:

1 - I've uninstalled PI and re-installed
2 - I've tried Star Ilignment with all 4 of the bayer mosiac formats
3 - I've tried Image Integration with all 4 of the bayer mosiac formats
4 - I've tried Star Alignment  + Image Integration with all 4 of the bayer mosiac formats


finally I went to my 1st (published here)  M42  and tried the entire process again...the linear image came out green (for the 20th time). So I decided to place two pics here:

One of the original 1st M42 with a STF stretch on the linear photo after Image Integration (reddish result...normal with defiltered DSLR)
....and One of the original 1st M42 with a STF stretch on the linear photo after Image Integration...and with my GREEN PROBLEM THAT SHOWED UP LAST WEEK AND THAT I CAN'T GER RID OF!!!!!

PLEASE CAN ANYONE HELP ME GET THE DEFAULY SETUP BACK?

Desperately,
Paulo

[oldwexi]

Hallo Paulo!
Using the Canon 600D - i use "RGGB" in Debayer of PI to debayer
ALL my images. Includes terrestical. It works.
So, take a raw image of M42
 run Debayer with RGGB
Unlink(!!!) the RGB butto in STF as mentioned by chris_todd
 press A in STF und you should have temporary the correct color in the single image...

After that do the same with an calibrated image to check if there is an issue in the calibration process.
Aloha
Gerald

[georg.viehoever]

Try to uncouple the three channels in STF (Button on the top left of STF), then hit the A (automatic) button. Note that this is only a temporary change. If you want to make it permanent, you need to do a similar thing with HistogramTransform.
Georg

[pmesquita]

Hello again.

I'm quite familar with the PI STF group and ungroup feature. i've used it quite a bit by now. And with the HST conversion. There is another problem here. The Auto SFT funcion when PI is "normal will always give me reddish images like pic one. Pic 2 is an aberation. When I free the green button and try to make it dissapear I get the weirdest squarish shapes on the background of the image. Like a soccer goal net...seriously!

There is some config that I changed and that I cant seem to get back to default...and I've  spent almost a week on this. Its very frustrating...even the stars are green to a point where all STF, Color calibrarion, and HST are totally useless....

I'm still in the dark here....

Cheers
Paulo

Try to uncouple the three channels in STF (Button on the top left of STF), then hit the A (automatic) button. Note that this is only a temporary change. If you want to make it permanent, you need to do a similar thing with HistogramTransform.
Georg