Hello @hhentschel,

Sorry, you'd need to give some sample images and show the problem.

At a guess, perhaps your input image has a colour profile? dzsave will strip profiles from tiles as it writes, since most people will not want a copy of the same (potentially quite large) profile in every output tile.

Hi jcupitt,

it is the same image we discussed in this question.

If you don´t have it anymore, i could send it again to you.
The image does have a color profile.
Is there a way to disable the removal of the color profile? Or will the image grow very big then?

I would convert the image to srgb before making the deepzoom pyramid. This will make your pyramid smaller and it should look the same to your users.

Try:

vips colourspace 234144.jpeg x.dz srgb

To make x.dzi and x_files.

Thanks, unfortunatly it is not working.
i get the same result.

i also tried converting first only the image

vips colorspace 234144.jpeg x.jpg srgb

and then your line of code, but did`nt work.

It looks like your profile only works with perceptual intent. Try:

vips icc_transform 234144.jpeg x.dz srgb --intent perceptual --embedded

still no luck.
i also tried relative instead of perceptual, but no difference.

it looks like icc_transform makes it more redish, which is missing
when i try the colorspace.
And there is a difference in the redish tone, when viewing the whole image (
a lot of red) and as soon as i zoom in, there is less red.

Could you have made a mistake? It's working for me.

I ran:

vips icc_transform 234144.jpeg x.dz srgb --intent perceptual --embedded
vipsthumbnail 234144.jpeg 

Here's x_files/9/0_0.jpeg. It has no profile and has been converted to sRGB:

Here's the output of vipsthumbnail. It still has a profile and is in Adobe98 (I think):

They look the same to me.

Thats true, i get the same result. But a soon as you zoom in, the color changes.
Your first image is like this one, no zooming in:

But as soon as i zoom in the red tone disappears and it gets more green:

The difference is hard to see here in the comment, but in the viewer it is quite obvious.
Here is another example:
Original:

and after converting it:

Perhaps you have some tiles left over from an earlier run? Maybe your web browser has cached the old tiles? I would try saving to a new directory under a new name.

Good Point. I will/can test that on monday.

Is there also a way to sharpen the image with vips?

Yes, many ways. Have a look at vips sharpen.

I think we're done, I'll close.

Hi,
sorry for that delay:
Just to recap and for future questions:
First issue: it's working now, probably the browser cache, but i also saved them in a new directory.

Second Question: vips sharpen works great. I had some issues finding the right coding formular, but with this, it works just fine for me:
vips sharpen x.jpeg newname.jpeg --m2 25

thanks!