As has already been said, it looks like you haven't successfully recovered all of your original image file. Most JPG images contain an embedded thumbnail as well as the actual picture data, so it looks like you have been able to retrieve this part only - or the remainder is wholly or partially corrupted.
If your original file was readable before deletion then my guess is that the disk sectors containing the now unreadable parts of the file were overwritten before Recuva could make a stab at retrieving them. If not, the previous respondant's reply contains the answer. To get the best chance of retrieving accidentally deleted data it is vital to do nothing with the disk containing it until a program like Recuva has been used for retrieval to another disk.
You may still be able to salvage more of your restored files if they are corrupted by missing or incorrect byte stream terminations. There are several freeware and shareware programs out there that claim to "mend broken files", which they do by re-writing the missing terminations.
I hope this helps out - Peter.
