[sane-devel] backend Kodak i260 Image depth 48 bits stream. How is coded?

[m. allan noah]

i've never used photoshop CS, but i slapped a pnm header on top of the
raw file saying that it was 8 bit grayscale, 3600 x 2200, and i see
the car pretty clearly, with some weird stretched ghost image on top.
the ghost might be some sort of high bit count Y channel?

allan

On Sat, Aug 30, 2008 at 4:47 AM,  <jgobuzon-lm at yahoo.com> wrote:
> Allan:
>
>   A 1.5 bytes per pixel cool!. Maybe was my imagination, but I can see a
> odd repeated image when I open the RAW image with Photoshop CS2 with this options:
>
>  1200 width, 1000 height, 3 channels, 16 bits depth and 0 bytes size header.
>
>
>  I'd put a zip-file with the RAW image on the next url
>  (a Windows-generated JGP image of the same car was included too)
>
>   http://www.upitus.net/08354nussl68/imageCar.zip.htm
>
>   and here too
>
>   http://www.gigasize.com/get.php?d=t7m1l42fxrc
>
>
>  The scanner header-image date values are:
>
> STS : srbsts/0x01 hres/0x00000000 pcbActualData/256
> DMP : aSizeof:                           256
> DMP : aImageSize:                        7833600
> DMP : aImageIdentifier:                  3
> DMP : aResolution:                       200
> DMP : aXoffset:                          0
> DMP : aYoffset:                          0
> DMP : aImageWidth:                       2400
> DMP : aImageHeight:                      2176
> DMP : aBitDepth:                         48
> DMP : aCompression:                      0
> DMP : aPrintString:                      <                                        >
> DMP : aDocumentCount:                    0
> DMP : aTokenCount:                       0
> DMP : aRegeneration:                     0
> DMP : aDeskewEnabled                     0
> DMP : aDeskewStatus:                     0
> DMP : aRif:                              0
> DMP : aSkewAngle:                        0
> DMP : aPatchType:                        0
> DMP : aPatchDetected                     0
> DMP : aImageStatus:                      0
> DMP : aAdditionalLength:                 0
> DMP : aImageSegmentNumber:               0
> DMP : aImageLastSegment:                 0
>
>
>
>
> Jose Osuna
>
>
>
> On Fri, Aug 29, 2008 at 8:52 PM, Jose Guadalupe Osuna Chavez
> <jose.chaves at sat.gob.mx> wrote:
>>
>>        Another weird thing about bit depth is as a result of the read_imageheader command I get values of: 2400 width, 2176 length with a total image bytes of 7833600. That doesn't match with an image of 2400 x 2176 x 6 bytes per pixel.
>
> sounds like it is compressed. i think the 48 bit value is a red
> herring. the i1860 requires something like 96 bits in that spot, even
> though it only scans in 24 bit color.
>
>>
>>        I'm just have watch on inquiry result a label with aFrontCameraYCCOutput:1 and aFrontCameraYRGBOutput:0. YCC is a Kodak image format, isn't?
>
> no, shortened form of YCbCr.
>
>>
>>        Later I'll post an URL to a RAW image file scanned (without graphic format header).
>
> sounds good. i might be able to figure it out.
>
> allan
>
>>
>>        Thanks a lot.
>
>
>
>
>
>
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