Posts:
8,055
Registered:
31-Jan-2006
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Re: Cover photo on a folder page is blurry
Posted:
16 Dec 24, 19:39
in response to: Laza
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Took me a while to realize why things weren't happening as I expected them to, when testing.
I just use the jAlbum ThemeImageProcessor routines, and that takes care of it all for me. My Groovy code never has to call the image processor explicitly. The core knows when the theme images have to be regenerated, so I don't have to.  |
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Posts:
96
Registered:
16-Nov-2012
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Re: Cover photo on a folder page is blurry
Posted:
16 Dec 24, 19:57
in response to: JeffTucker
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Even if I manually delete the folder image in the system and regenerate it through the upload, the quality of the image unfortunately does not change
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Posts:
1,456
Registered:
6-Sep-2005
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 10:18
in response to: JeffTucker
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My skins started generating theme images long before jAlbum had this library, and I can't use it anyway because they generate 3 different sizes with optional blur / grayscale effects.
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1,456
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 10:22
in response to: BRBremen
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I can't see any blurriness in this photo. For sure, it can be even more sharpened, but in most cases that would only add noise.
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1,456
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 10:42
in response to: JeffTucker
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David has confirmed that saving the images the way my skins do takes the image quality settings into account. So after an image quality change (but no change in the skin settings), one might need to remove the folder images from the output folder manually, but after making the album again, the new settings will be applied.
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Posts:
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 13:34
in response to: Laza
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My skins started generating theme images long before jAlbum had this library, and I can't use it anyway because they generate 3 different sizes with optional blur / grayscale effects.
Yes, I had to handle it myself, for the same reason. Once the library was available, I grabbed it. For a grayscale theme image, I pump the theme image through GrayscaleFilter(). At first I thought CSS could take care of it, but it's a background image, so no! Not sure how you could handle multiple sizes, however.... |
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 13:36
in response to: Laza
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...after an image quality change (but no change in the skin settings), one might need to remove the folder images from the output folder manually, but after making the album again, the new settings will be applied.
It would be inefficient, but maybe you should just regenerate those images on every build. I don't like that, but sending the user out into the file system to delete selected things is even uglier. |
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 15:09
in response to: BRBremen
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Just did a little experimenting with that image, and I think I have a clue about one of the problems with it. The bright white of the sides of the train are causing blown-out highlights, which produces some fuzziness. Just a quick, clumsy edit, but try using the attached image. See if that improves things.
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96
Registered:
16-Nov-2012
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 15:33
in response to: JeffTucker
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I don't see any improvement in the title image at the top of the folder page. The slides are still sharp enough, but I find the title image at the top of the folder page to be blurry. I've tried all kinds of resolutions and manual cropping with image editing programs in the meantime and I always get the same bad result. I just want this image to be as good as the slide.
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 15:48
in response to: BRBremen
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I don't see any improvement in the title image at the top of the folder page. The slides are still sharp enough, but I find the title image at the top of the folder page to be blurry. I've tried all kinds of resolutions and manual cropping with image editing programs in the meantime and I always get the same bad result. I just want this image to be as good as the slide.
Sorry, but I just don't see the difference (but I do think the version without the blown-out highlights looks better, especially around the carriage windows).
I think it's an illusion - virtually any photo when viewed at a larger size will appear less sharp. You can take an image, show it in a 1600x1200 frame, then show the same image in a 1200x900 frame, and the smaller one will look sharper. |
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 16:15
in response to: JeffTucker
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Another little experiment....
Grabbed your image, and made an album with my own skin, Neptune, which lets the jAlbum core do all of the theme image processing. Used my "reduced highlights" image for the theme image, but included both, so it's easy to compare the slide images to each other.
Image bounds at the skin default of 1920x1080, scaling is smooth/standard, and I cranked up the JPEG Quality to 85%, and the sharpening to 50% (I wouldn't do that with faces, but with this kind of material it doesn't produce any unpleasant artifacts).
(demo album removed)
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Posts:
96
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16-Nov-2012
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 16:59
in response to: JeffTucker
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I don't see any improvement in the title image at the top of the folder page. The slides are still sharp enough, but I find the title image at the top of the folder page to be blurry. I've tried all kinds of resolutions and manual cropping with image editing programs in the meantime and I always get the same bad result. I just want this image to be as good as the slide.
Sorry, but I just don't see the difference (but I do think the version without the blown-out highlights looks better, especially around the carriage windows).
I think it's an illusion - virtually any photo when viewed at a larger size will appear less sharp. You can take an image, show it in a 1600x1200 frame, then show the same image in a 1200x900 frame, and the smaller one will look sharper.
But what's the point?
Shouldn't a photo that is 2500 px wide and placed in a 1600 px window be displayed sharper than a photo that is exactly the same size and 1600 px wide?
In the same way, a photo that is smaller than 1600 px wide should be displayed blurrier because it has to be enlarged. |
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Posts:
96
Registered:
16-Nov-2012
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 17:01
in response to: JeffTucker
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Another little experiment....
Grabbed your image, and made an album with my own skin, Neptune, which lets the jAlbum core do all of the theme image processing. Used my "reduced highlights" image for the theme image, but included both, so it's easy to compare the slide images to each other.
Image bounds at the skin default of 1920x1080, scaling is smooth/standard, and I cranked up the JPEG Quality to 85%, and the sharpening to 50% (I wouldn't do that with faces, but with this kind of material it doesn't produce any unpleasant artifacts).
https://jefftucker.jalbum.net/tiTest/
In your test, the cover image is not displayed properly either. The two slides have the same quality, but I think your editing is too exaggerated; the colors are too harsh. |
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Posts:
8,055
Registered:
31-Jan-2006
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 17:05
in response to: BRBremen
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I switched to the image with the blown-out highlights for the theme image. View again, and refresh your cache.
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Posts:
96
Registered:
16-Nov-2012
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Re: Cover photo on a folder page is blurry
Posted:
17 Dec 24, 17:25
in response to: JeffTucker
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I switched to the image with the blown-out highlights for the theme image. View again, and refresh your cache.
the image quality is the same, only that the white now stands out more. |
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