thumbnails

I'm trying to genererate thumbnails from image files stored in a folder under the website root, I am currently using the built in capebilites in .NET to dynamically generate the thumbnails but the quality gets quite bad and since its an webshop thats a real problem my question is if there is any good (open source?) frameworks that can help me hanlde the image thumbnail creation and rezise and possible help with image file size compression during upload? I've looked but havent found any yet? Thanks in advance. I've written some code you could use. Please don't sell it ;) This is the code: /* *

I'm trying to thumb an image as fast as possible regardless of the usage of resources to be used in my ImageList and listview and this is currently how i'm doing it but it seems to be slow: public Image toThumbs(string file, int width, int height) { image = null; aspectRatio = 1; fullSizeImg = null; try { fullSizeImg = Image.FromFile(file); float w = fullSizeImg.Width; float h = fullSizeImg.Height; aspectRatio = w / h; int xp = width; int yp = height; if (fullSizeImg.Width > width && fullSizeImg.Height > height) { if ((float)xp / yp > aspectRatio) { xp = (int)(yp * aspectRatio); } else { yp =

I have seen the API demos of android (/ApiDemos/src/com/example/android/apis/view/Gallery1.java) , but they take images from the res folder within the project. I want to create a gallery of the images which are put up in the folder: /mnt/sdcard/Android/data/com.myapp/files/Pictures/ All i could come up was this code, which, i suppose, displays all images. public class ExistingPicGallery extends Activity { private Cursor cursor; private int columnIndex; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.gallery1); Gallery g

I'm going to write a function for thumbnail creation. I can use both Imagemagick & GD Library methods. Which method creates better thumbnails and is faster and better for server (load, ...)? Thanks $im = imagecreatefromjpeg('photo.jpg'); $ox = imagesx($im); $oy = imagesy($im); $nx = 320; $ny = 240; $nm = imagecreatetruecolor($nx, $ny); imagecopyresized($nm,$im,0,0,0,0,$nx,$ny,$ox,$oy); imagejpeg($nm, 't_photo.jpg'); VS exec('convert photo.jpg -resize 320x240 t_photo.jpg'); What do you think? Also every good thumbnail should be sharpened a bit... exec('convert photo.jpg -resize 320x240 -unsharp

I want to use GS to generate thumbnails from pdf files. The thumbnail must fit a 90x120 pixel rectangle The image should not be rotated The image should be resized to fit the rectangle with keeping aspect ratio I use the following command: gswin32 -dPDFFitPage -dPARANOIDSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=0 -dDEVICEWIDTH=90 -dDEVICEHEIGHT=120 -dORIENT1=true -sDEVICE=jpeg -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sOutputFile=output.%d.jpg input.pdf Result: If I use some PDF with portrait pages like this example , which you can download, then the