[Digikam-users] jpeg compression

[Francesco Scaglioni]

Hi,

> This suggests, that maybe something like 70 was used inside of the camera?
> 
> From the number of pixels Nx * Ny, the number of bytes needed
> to store the image (without) compression should follow from
> Nx * Ny * (8+8+8), i.e. one Byte per R, G, B.

On a resolution of 3264 x 2448 I get jpeg file sizes of between
2.2 and 4 MB per image (subject matter depending).

3264 x 2448 x 24 = 191,766,528

For a particular image of size 3,974,526 (size and
resolution stated by digikam) the compression facto does not
make sense to me (in that I don't fully understand ).  A
factor of 48 cannot be possible : surely.

Any suggestions ?

Regards,

Francesco

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