RPICAM2DNG() not converting mode 2 High Quality Cam

[David Carr]

Get the following error when trying to extract raw DNG from photos taken in mode 2 on rpi high quality camera
(raspistill --mode 2 -r -o test.jpg):

Traceback (most recent call last):
d.convert(im)
File "C:\Users\daggy\AppData\Roaming\Python\Python39\site-packages\pidng\core.py", line 267, in convert
rawFrame = self.process(image, process)
File "C:\Users\daggy\AppData\Roaming\Python\Python39\site-packages\pidng\core.py", line 232, in process
rawImage = self.extractRAW(input_file)
File "C:\Users\daggy\AppData\Roaming\Python\Python39\site-packages\pidng\core.py", line 195, in extractRAW
assert data[:4] == 'BRCM'.encode("ascii")
AssertionError

[Csaba Nagy]

Can you send a link to this RAW image?

[David Carr]

<!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm; font-size:11.0pt; font-family:"Calibri",sans-serif;} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} .MsoChpDefault {mso-style-type:export-only;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 72.0pt 72.0pt 72.0pt;} div.WordSection1 {page:WordSection1;} -->Thanks for spending time looking into this, the example image link is here:https://github.com/dgcarr/rawimage/blob/main/image-0000354.jpg  best regardsdgcarr Sent from Mail for Windows From: Csaba NagySent: 12 September 2021 06:58To: schoolpost/PiDNGCc: David Carr; AuthorSubject: Re: [schoolpost/PiDNG] RPICAM2DNG() not converting mode 2 High Quality Cam (#50) Can you send a link to this RAW image?—You are receiving this because you authored the thread.Reply to this email directly, view it on GitHub, or unsubscribe. 

[Csaba Nagy]

The reason for this error because even though you are using mode 2 RAW, the jpeg file is still creating a 4056x3040 sized image and therefore PiDNG assumes it is full size RAW. ( which is the correct assumption based the jpeg )

So two ways around this:

1. Make the JPEG output the same dimensions as the RAW output ( so 2028x1520 )
2. Edit the EXIF data of the jpeg and change the ImageWidth and ImageLength to 2028x1520
3. Edit the PiDNG source and set the version variable to version 4.
   

   PiDNG/pidng/core.py

   Lines 178 to 183 in 30bee22

     
    if int(str(self.__exif__['Image ImageWidth'])) == 2028 \ 
        and int(str(self.__exif__['Image ImageLength'])) == 1520 \ 
            and ver == 3: 
        ver = 4 
     

So you could add a line and just set "ver = 4"

[David Carr]

Awesome, thanks! It's a good workaround

…

On Mon, 13 Sep 2021, 4:35 pm Csaba Nagy, ***@***.***> wrote: The reason for this error because even though you are using mode 2 RAW, the jpeg file is still creating a 4056x3040 sized image and therefor PiDNG assumes it is full size RAW. So two ways around this: 1. Make the JPEG output the same dimensions as the RAW output ( so 2028x1520 ) 2. Edit the EXIF data of the jpeg and change the ImageWidth and ImageLength to 2028x1520 3. Edit the PiDNG source and set the version variable to version 4. https://github.com/schoolpost/PiDNG/blob/30bee229654f07532a473963e7c704a4a8e1af04/pidng/core.py#L178-L183 So you could add a line and just set "ver = 4" — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#50 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABO66SA6O6UYEM2V2UMXQODUBWLTFANCNFSM5D22Y5TQ> .