New Version of FREE crw-Converter

[Hartmut]

Available at
http://www.schulla.at/misc/CRW3.1.zip

Benefits: accurate colors, better saturation and contrast, several interpolation methods available for best sharpness and/or less noise, color-smoothing, ICC-profile for D60 included.

And its a LOT sharper than the CANON SDK!
NO blown out highlights!

Usage see doc.txt

In the next weeks (my vacancy) I will try to wrap around a GUI with all controls, thumbnail-preview and profile tagging.
H.

[john_houghton]

Apart from the blue colour balance noted by others, I noticed this quirk in fine white text. The crops are from images of an Epson 750 printer, resampled upwards x3. I used crw.exe 3.1 with standard default settings and Pekka's LS342 with normal sharpening HQ. The comparison image is from Breeze Browser. Admittedly, the text is small and the effect is unlikely to be noticed.

crw - bb comparison

John

[john_houghton]

Ah! Sorry, my link should have been entered as:
crw -bb cpmparison (http://homepage.dtn.ntl.com/j.houghton/crwbbcmp.jpg)

John

[Hartmut]

john_houghton wrote:
Ah! Sorry, my link should have been entered as:
crw -bb cpmparison (http://homepage.dtn.ntl.com/j.houghton/crwbbcmp.jpg)

John
Hi!
I noted this problem also on some but not at all pics, because I'm working for a fix (false color filter).
Here another sample :
http://www.schulla.at/misc/D60hq.jpg
On the other side, I'm wondering about your blue cast.
The pic above was converted using Pekka's LS 342 using HQ. I never had any blue cast with it.
You have to run Pekkas actions without any Profiles previous assigned/converted. (untagged picture).
Regards
Hartmut

[john_houghton]

Hartmut wrote:You have to run Pekkas actions without any Profiles previous assigned/converted. (untagged picture).
When opening the .psd file, Photoshop prompts for a missing profile and I check the option "Leave as is".

John

[Hartmut]

john_houghton wrote:
Hartmut wrote:You have to run Pekkas actions without any Profiles previous assigned/converted. (untagged picture).
When opening the .psd file, Photoshop prompts for a missing profile and I check the option "Leave as is".

John

Which conversion of Pekka's LS342 do you use? When Using HQ there are no coloured artefacts on my pics also when only converting by assigning the 1.4 Profile.!
Regards
H.

[john_houghton]

Hartmut wrote:
Which conversion of Pekka's LS342 do you use? When Using HQ there are no coloured artefacts on my pics also when only converting by assigning the 1.4 Profile.

I'm using Convert (normal sharpening HQ) in Linear sharpen 342. The coloured artifacts on the white lettering are in the PSD file output by crw.exe, so I wouldn't expect LS to eradicate them. Maybe you should have a copy of my crw file for testing.

John

[Hartmut]

john_houghton wrote:
Hartmut wrote:
Which conversion of Pekka's LS342 do you use? When Using HQ there are no coloured artefacts on my pics also when only converting by assigning the 1.4 Profile.

I'm using Convert (normal sharpening HQ) in Linear sharpen 342. The coloured artifacts on the white lettering are in the PSD file output by crw.exe, so I wouldn't expect LS to eradicate them. Maybe you should have a copy of my crw file for testing.

John
Hi!
Here is a new version of crw
http://www.schulla.at/misc/crw3.2.zip
Benefits: blue color cast removed, better interpolation, D30/D60 support!!
Give it a try! Let me know about!
regards
Hartmut

[john_houghton]

I tried crw3.2 on my image of the Epson printer, together with crw3.1 and Breeze Browser. The image was taken with a D30 in daylight from a window with fill-in flash. In the conversion with Breeze Bowser, I opted for a daylight white balance rather than flash. The comparison image shows the result of processing with crw3.1, crw3.2 and Breeze Browser. All were processed with the same Linear Sharpen 342 settings (normal sharpening, HQ). BB seems to give the better colour match. The colour artifacts in the small white text are present in both crw3.1 and crw3.2.

Conversion comparison image (http://homepage.dtn.ntl.com/j.houghton/crwtrio.jpg)

John

[Hartmut]

john_houghton wrote:
I tried crw3.2 on my image of the Epson printer, together with crw3.1 and Breeze Browser. The image was taken with a D30 in daylight from a window with fill-in flash. In the conversion with Breeze Bowser, I opted for a daylight white balance rather than flash. The comparison image shows the result of processing with crw3.1, crw3.2 and Breeze Browser. All were processed with the same Linear Sharpen 342 settings (normal sharpening, HQ). BB seems to give the better colour match. The colour artifacts in the small white text are present in both crw3.1 and crw3.2.

Conversion comparison image (http://homepage.dtn.ntl.com/j.houghton/crwtrio.jpg)

John
Hi!
Thanks for the comparison now its not a real problem to "fine adjust" the conversion process. I think, It will be necessary to implement a "false color filter" to suppress colour artefacts. I'm working!
Regards
Hartmut

[konrad_hoelzl]

Hi Hartmut !
I appriciate your efforts for developing a new "open" CRW converter very much.
Although i already own 3 Converters (Canons, BreezeBrowser, Yarc) i believe that it is great to have a compleetly free alternative too.
Matt Dillon has done a fabulous start with providing the basics of the CRW files and a first attempt for generating a free converter.
Since i have first encountered the sources of his implementation i was alwas thinking of optimizing the way of interpolation he uses to generate the missing color information.
I am wondering if you are using any kind of "more sophisticated" algorithms for demosaicing the Color Array. Searching the internet you can find a lot of informations and attempts for solving this problem. A very good one seems to be developed by ron Kimmel.
"Demosaicing: Image Reconstruction from Color CCD Samples" Ron Kimmel
Thanks for your work and efforts and please excuse my bad english (i am from austria too ;-) )
Konrad

[dave123]

Just to put the record straight Hartmut has just re-compiled and changed a couple of simple internal values from the source code at this site:-

http://www2.primushost.com/~dcoffin/powershot/

He Also includes a ICC profile made from the linear output of canons converter not his converter this will not give accurate results. i.e. blown highlights and color shifts etc

I very much doubt we will ever see a UI or False Color Filter :-)

Prove me wrong Hartmut :-)

[Hartmut]

konrad_hoelzl wrote:
Hi Hartmut !
I appriciate your efforts for developing a new "open" CRW converter very much.
Although i already own 3 Converters (Canons, BreezeBrowser, Yarc) i believe that it is great to have a compleetly free alternative too.
Matt Dillon has done a fabulous start with providing the basics of the CRW files and a first attempt for generating a free converter.
Since i have first encountered the sources of his implementation i was alwas thinking of optimizing the way of interpolation he uses to generate the missing color information.
I am wondering if you are using any kind of "more sophisticated" algorithms for demosaicing the Color Array. Searching the internet you can find a lot of informations and attempts for solving this problem. A very good one seems to be developed by ron Kimmel.
"Demosaicing: Image Reconstruction from Color CCD Samples" Ron Kimmel
Thanks for your work and efforts and please excuse my bad english (i am from austria too ;-) )
Konrad
Thanks for your tipp! I'll try to implement this method too.
Regards
H.

[Hartmut]

Hi!
I've added a new "edge-weighted" interpolation method with a "false color filter". You can activate it with option - d 2 (which is now a default).
"crw pc.crw" will activate the new fcf interpolation.
http://www.schulla.at/misc/crw3.3.zip
Its a quick and dirty code. I hope it will work!
regards
Hartmut

[Hartmut]

Hartmut wrote:
Hi!
I've added a new "edge-weighted" interpolation method with a "false color filter". You can activate it with option - d 2 (which is now a default).
"crw pc.crw" will activate the new fcf interpolation.
http://www.schulla.at/misc/crw3.3.zip
Its a quick and dirty code. I hope it will work!
regards
Hartmut
Sorry!
There was a "programming error"! Version updated!
http://www.schulla.at/misc/crw3.3.zip
Regards
H.

[clkgtr37]

Can someone give me a step by step on how to run this program? I have tried everything but I was wondering exactly what you did for you example picture workflow.

[TonyKInTexas]

I've tried getting to this site and I keep getting a 404 error.

Anyone know of a mirror location?

Thanks,

Hartmut wrote:
Sorry!
There was a "programming error"! Version updated!
http://www.schulla.at/misc/crw3.3.zip
Regards
H.

[emklap]

crw3.3.zip does als not exit, is there a miror somewhere

[mrchips]

Where is the file, I just get 404 errors!!!!!!!!!!