When we stretch a picture it usually gets blur. Quality of a stretched picture reduces. what is the technique that can be used to eliminate or at least improve the quality of the stretched picture in photoshop/paint.net or in any other program. Thanks
to resize, adjust the images size, make sure the pixel is set for printing purposes, adjust resolution pixels. the bigger the print size, resolution must be diminished ...
The best tool I'd suggest to do this is Genuine Fractals photoshop addon. It's the best when it comes to resizing an image drastically with pretty much the same image quality. I use it myself. Works great!
Imagenomic is something you could add on to help with noise if it occurs (for photoshop). You could also sharpen an image if it is a bit blurry. One way is to use a high pass filter of a duplicate layer, and set it to overlay. It might help reduce blur.
In Photoshop, try Filter -> Smart Sharpen, and have a bit of a mess with the settings (the values you use will depend on how much you've changed the image scale by). It can help as long as you're not resizing the image too much. In general though, you'll always lose quality when resizing up so it's best to get source images as large as poss, although I realise that doesn't help much if you can't get bigger images.
I suggest you to make some surface or smart blur on the image and make it sharpen. It works great for myself
Sharpening through the filters is only a slight, "band-aid" fix. Try this instead: 1. Open up the image, then duplicate the layer the image is on (ctrl-J) 2. Run a "high pass" filter (filter > other > high pass), adjust it to your liking 3. Change that layer to a "hard light" layer 4. Your image is sharpened and more vivid without being distorted.
You need to resize a file to a proportional size of its original one, or just use ctrl+t and then use the things on the corner, and press shift while resizing .