Hello,
Ive noticed up on using Nautilus, as well as other file manager like Dolphin, that the Image-Preview Icons of an Image are not the real image but altered in some way.
You can see here that the Image-Preview contains alot area around the hanging coat:
Which is mysteriously added space, because this is the actual real image: The border is touching the coat on the left side.
Another example? The shirt has alot of “padding” to the sides:
Again, the actual image doesnt have it and the padding is way smaller and missing many shapes and details of the prior picture:
Ive opened the picture in GIMP, and it shows the exact same size as you can see here in discourse:
Im not sure whats the reason here:
Is the actual imagefile bigger in dimension but cropped due to some META values, so Ubuntu/Nautilus/Dolphin dont adhere to the cropping and show the raw size while actual Image-Programs like ImageViewer or GIMP adhere to the cropping and wont show me the “extra pixels” - or if this is some spooky “thats an AI feature of your OS” type of stuff that tries to create some minimum icon size and dimension ratio?
Anyway, anyone know how to investigate?
Thanks
I downloaded your IMG_20240126_191602.jpg and i’m unable to see the problem
for ‘Image-Preview Icons’ you mean the thumbnail on the nautilus window?
however I doubt that image-preview can invent anything other than just an extension of the background as in the case of this image.
Note: i’m using Ubuntu 26.04 pre release, what ?buntu do you use? and what version?
Edit: moved to Ubuntu 24.04 still unable to see the problem
I can think of two reasons for this:
- the image originally looked like the thumbnail, was edited (cropped) but the thumbnailer didn’t update. This happened to me several times.
- there’s a thumbnail embedded in the jpeg (would be part of the EXIF-metadata …). The thumbnailer just extracts this, trusting that thumbnail to be correct, but it isn’t. Potentially the creation of this embedded thumbnail happened on the camera. I’ve seen this quite often with scanned images, the thumbnail showed the ‘raw’ scan with a big border of grey around the actual image and with slightly ‘off’ colours while the actual image had the border removed and the colours corrected. There are quite a few image-editing programs around that don’t care about these embedded thumbnails.
1 Like
