[Qt-interest] which QImage::Format is the right one, how to construct colortable?
Matthias Pospiech
matthias.pospiech at gmx.de
Mon Jul 12 15:33:15 CEST 2010
I have a camera which has several ways to store the image in an array.
I would like to chose a one which I can pass directly to a QImage,
however I fail to see which one is correct:
This table lists how the camera saves the images:
http://www.ids-imaging.de/frontend/files/uEyeManuals/Manual_ger/uEye_Handbuch/index.html?sdk_allgemeines_farbformate.html
which has only few options where only one pixel is within 32 bit, or
aligned with 32 bit. Especially 8 bit mono versions include 4 pixel in
32 bit.
Now I wonder if these match in storage:
Qt - camera format
-----------------------------------------
QImage::Format_RGB32 - RGB32(8 8 8)
QImage::Format_ARGB32 - RGBY(8 8 8 8)
QImage::Format_RGB16 - BGR16(5 6 5)
QImage::Format_RGB555 - BGR15(5 5 5)
QImage::Format_Indexed8 - Mono8 (8, 8, 8, 8)
I am not familier with these storage formats, so I would appreaciate if
someone could
verify that I am right or wrong.
Besides the format I also need to know how to calculate the BytesPerLine
(which I need to pass)
and I wonder how a colortable would look like, which I need to pass to
the QImage in
image.setColorTable( const QVector<QRgb> colors )
Matthias
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