earticle

영어

In Fragmented JPEG carving we require header information for a successful recovery of the image. In case of a fragment with a corrupted or missing header we need a way to extract important parameters from the content of the blocks. In this paper the inter block mean absolute difference is proposed to detect the size information of the JPEG fragment. The proposed approach has improved the complexity of the existing image size extraction approach to O(n), moreover we are able to get offset information of the block arrangement in the fragment.