Pedia cover recommended quality ? (scan)

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Pedia cover recommended quality ? (scan)

Postby lucg2 » Tue Nov 05, 2019 7:14 am

Can you please tell me which quality is recommended if i want to scan a book a CD or a blu ray.
200dpi max ? more or less ?
or a size in pixel ?
Should I scan and save in JPEG or PNG ?
Should i delete the background (alpha channel) ?
Thank you.

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Re: Pedia cover recommended quality ? (scan)

Postby rpali » Wed Nov 13, 2019 9:00 pm

For CDs, I use a simple 800x800 pixels. The DPI setting makes no difference. I also use JPEG because it's good enough and saves a bit of space.
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Re: Pedia cover recommended quality ? (scan)

Postby randian » Sun Apr 12, 2020 8:54 am

Bear in mind that what a Pedia saves to disk is not what you drag to the picture window. It re-encodes the image, which loses quality. This cannot be turned off. If you want to preserve the original image you have to copy it directly to the Covers folder, replacing the image the Pedia saved.
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Re: Pedia cover recommended quality ? (scan)

Postby FineWine » Sun Apr 12, 2020 5:54 pm

The pedia's have been coded for the jpeg format at 72 DPI and it will automatically convert to that. Obviously if you start with a higher quality image you end up with a higher quality on down sizing. Quality in = Quality out or garbage in = garbage out

Now having said that. That was in versions prior to the 64bit major overhaul version 6. There has been talk about transparent edges and using png formats. Whether this has occurred I am not sure.
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Re: Pedia cover recommended quality ? (scan)

Postby rpali » Fri Apr 17, 2020 11:56 pm

FineWine wrote:The pedia's have been coded for the jpeg format at 72 DPI and it will automatically convert to that.


I wonder why that is. The DPI setting on an image displayed on screen really has no effect.
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