OSS Ramblings
http://www.ossramblings.com/nook_screensaver_site
Barnes and Noble Nook Wallpaper Site
Submitted by tony on Thu, 01/07/2010 - 15:45.
I've recently launched a wallpaper and screensaver sharing site for the nook called Nook-Look.com.
It allows you to upload, download, rate and comment on images to enhance your nook's overall appeal.
Wallpaper groups can even be uploaded as a zip file, and it will automatically generate animated thumbnails from the uploaded zip file.
I'm still working on it in spare time, so expect the features and design to continue to evolve.
If you have a nook (or even one of those Amazon thingies) check it out!
Copyright 2009 Anthony Maro - All Rights Reserved
Nook-Look.com
Love your site! You've done a really great job with it. Just one suggestion: Any way you can put in a search option?
Yep.
Yep. I've been busy with actual work so development stalled, but I will be getting back to it to enhance features and add search soon. Hopefully. ;-)
bug and feature.
Great site! Started uploading my content.
One bug: Wallpapers don't fit nook screen preview. Gap is at the bottom rather than the top.
One "would be cool if you ever had time" feature: Thumbnails would be "true color" previews. In true color, I mean the gray scale image would be made to look like the e-ink color range. 16 colors, with a more gray color for white, black not quite black. Images that will look good on the nook probably wont look good in the preview, otherwise.
I'm pretty sure you've used the same nook image as I did when creating my background creator. Here are the color adjustments I used after converting the image to 16 color gray scale (trunc(intensity/17)*17, high intensity = 255).
blue = intensity*(187/255)+25;
green = intensity*(185/255)+24;
red = intensity*(184/255)+20;
I have c# opencv code to do this if you're interested.
Thanks
About the "bug" - yeah, it's a feature of my CSS absolute positioning ;-) I may address that in the future, but chose to ignore for now.
The problem with the "true color" (or rather "true 16 gray") previews though - the nook seems to dynamically determine and dither if you provide a full shade grayscale image.
But, if you want to suggest how to do that with ImageMagick command line tools, I'd be happy to run a test of it for thumbnails.
ImageMagick commands
You're right about the dither...and the preview is too small to matter anyways :)
Here is the color correction, if you want to give it a try. Didn't realize you can do pretty much anything with ImageMagick!
convert test.jpg -resize 90x120 -colorspace Gray -colorspace RGB -channel red -fx "r*0.7215686274509804+0.0784313725490196" -channel green -fx "g*0.7254901960784314+0.0941176470588235" -channel blue -fx "b*0.7333333333333333+0.0980392156862745" out.jpg
So, it:
- resizes first (to save cycles for the rest) to, in this case, 90x120.
- forces image to grayscale,
- forces back to color (since color correction is in RGB),
- corrects each color channel to match the nook behind the preview.
I think your "whites" are a
I think your "whites" are a bit too dark compared to how the nook actually looks under good lighting conditions. I've never used the channel fx before, but I'm going to toy with it to get it more to where I think it should be.
I've implemented it on the site already - so new uploads should come out truer to display for the thumbnails. Thanks!
Nook wallpapers
Your wallpaper/Screensaver site is great. I've used it to successfully download and install several screensavers on the nook. However, when copying a wallpaper download to the wallpaper folder on the nook, the file transfers correctly, appears when viewing the nook files on my PC, but nothing appears to have happened when opening the nook. There's no reference on the nook for the new wallpaper file and therefore, no way to activate it.
Any ideas?
I'm guessing you didn't
Wallpapers should appear automatically when in the right folder. A lot of people have trouble picking screensavers though due to how they must be added.
I've also found that my nook will sometimes not find new files until I reboot it completely - press and hold the power button until it turns off, then press again to turn it back on and see if that helps.
If you mean screensaver, then I'm guessing you didn't create a subfolder for the screensaver. A screensaver on the nook is really a series of images, not just one. You place them in a subfolder.
Check the "How to use a screensaver" in the FAQ at nook-look.com:
http://www.nook-look.com/pages/howto
Nook wallpapers
Thanks. It turns out that wallpapers differ from screen savers in that, screen savers are stored in a sub-folder of the "My Screensavers" folder, whereas, wallpapers are single files and not stored in sub-folders within "My Wallpapers".
Wallpaper photo - trying again!
I'm having the same problem, too --
I just tried that again this morning (I now have three of the pic in the wallpaper folder under different names). I exported the picture again into the My Wallpapers and they are there. In fact, when you go to the Nook drive after plugging in the USB, it shows the flower pics x 5 now, sigh. But when I disconnect the Nook and go to Settings - Display - Wallpaper ---- all I see are the four original Nook ones. I am unable to scroll or see my new flower picture under any of the names I've given it.
Is there something wrong with my Nook? Other than this, everything is fine. It seems minor with everything else it CAN do, but it's bugging me thinking it might be defective.
Problems finding new wallpaper downloaded on Nook
I have downloaded at least five times a photograph I would like to use as wallpaper instead of the tulip. I was able to figure out how to successfully download the screensaver, but the wallpaper is eluding me. Before I found your site, I had made a subfolder in the E:/Nook wallpaper folder. Then after reading your posts, I created a new folder in the E:/Nook to download into while it was plugged into the computer. When I click on all these folders (!) while the Nook is connected via USB to the computer, I see the picture/s. But after I disconnect, I'm still stuck with "nook" "nook_Pattern" "Tulip" and "Falling_Leaf" when I touch the Wallpaper display. I also did a power down reset and reboot. What do I need to do? Thanks for your help!
Thanks!
Hey Tony,
Thanks for the great site! I frequent to it occasionally and each time praise you for the effort. Guess most of the nookboards visitors too, though them people are lazy judging on the downloads / rates ratio :)
All the best,
Vad
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