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!
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