Re: [Boost-users] [GIL] rotated90cw_view - jpeg lossless rotation

Subject: Re: [Boost-users] [GIL] rotated90cw_view - jpeg lossless rotation
From: Christian Henning (chhenning_at_[hidden])
Date: 2009-12-06 11:08:32

Hi all,

> Rotation is lossless, but the jpeg format is not. There is a quality setting
> in the jpeg parameters that affects file size. I believe the new jpeg IO
> that Christian wrote exposes that setting, Christian is that true?

Yes.

>
>> What can I do make sure the exif tags are preserved ?
> Christian, is this possible?

Good question. I think libjegp provides several lossless
transformations while reading an image. This is not part of the
current new gil::io. I'll investigate how hard it might be to add such
feature.

Christian