JPEG compression question
I'm wondering how "intelligent" JPEG compression is...
I have a jpeg image that's currently 14 KB in size. The dimensions are 800 wide by 600 high. I'm using the image as a background to a web page, so I'd like to increase it's dimensions to 1600 by 1200 (twice as wide & twice as high) to avoid having to tile the image within the browser window.
Now, I don't want to actually enlarge anything within the image itself. I want to reflect the original image on both its horizontal and vertical axes, as well as on its lower right corner, in order to yield an image with 4x the original surface area. (I hope I explained that so it makes sense.)
My question: Is jpeg compression "smart" enough to know that I'm simply taking the original image, making 3 copies of it, rotating those copies in various ways, and then "stitching" them all together? In other words, will the resulting jpeg image be 56 KB in size, or closer to the original 14 KB?