Analyzing and Decoding Images(Picture) with an Unknown Format

Write a decoder for binary files storing high resolution images exported from a machine. There are no details about the image format itself - meaning that the source format needs to be reverse-engineered. However, for each image we can provide a small jpg file showing, in less detail, the actual image. The decoder will accept one image file as described above and will produce a file storing the decoded image in a standard format (e.g. png, jpg, etc) Sample files can be provided upon request.