Yes, it’s called Photoshop CSI and runs on MovieOS 😉
But seriously, enlarging an image in Photoshop will not improve it. Details that aren’t there in the first place will not miraculously appear.
Think about it this way.
you have 9 tiles each one is one square foot.
group them 3 x 3 and you have a 3 foot by 3 foot square.
now with out adding more tiles you want to cover more space with the same 9 tiles. so you move them apart. Now you have these big gaps in between the tiles so you fill in the extra space with grout.
this is what happens when you enlarge a picture in photoshop. It takes your original image and fills in the extra spaces with made up pixels. depending the amount of the enlargement depends how bad or good the final image looks.
Actually it depends on your image format. There are 2 types of images: bitmap and vector.
Most web images are bitmap (tiny square dots or pixels). The size of a bitmap image depends on the number of pixels and the resolution. You can change either to enlarge a picture, although web browsers will only display images in 72 dpi regardless of the resolution setting saved in the image. When a bitmap image is enlarged, the number of pixels are increased so that whereas details looked fine when they are small, the larger view will look blocky. Just look at an image onscreen from afar then come really close to the screen and you’ll see the pixels. That’s similar to the what happens when you enlarge a bitmap image.
Now if your image is vector graphics, the image is not made of pixels, but mathematical equations of how to draw the image. That means that the image is scalable. You can enlarge or shrink the image however you like, and the image will mathematically draw the image however it was designed to be drawn scaled to whatever size you set, and the highest quality of the image will be retained.
Actually it depends on your image format. There are 2 types of images: bitmap and vector.
well since Photoshop is a raster app chances are real high that hamid is talking about bitmap.
