IEEE Trans Image Process - Scanned compound document encoding using multiscale recurrent patterns.

Tópicos

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{ medic(1828) order(1363) alert(1069) }
{ signal(2180) analysi(812) frequenc(800) }
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{ group(2977) signific(1463) compar(1072) }
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{ method(2212) result(1239) propos(1039) }

Resumo

In this paper, we propose a new encoder for scanned compound documents, based upon a recently introduced coding paradigm called multidimensional multiscale parser (MMP). MMP uses approximate pattern matching, with adaptive multiscale dictionaries that contain concatenations of scaled versions of previously encoded image blocks. These features give MMP the ability to adjust to the input image's characteristics, resulting in high coding efficiencies for a wide range of image types. This versatility makes MMP a good candidate for compound digital document encoding. The proposed algorithm first classifies the image blocks as smooth (texture) and nonsmooth (text and graphics). Smooth and nonsmooth blocks are then compressed using different MMP-based encoders, adapted for encoding either type of blocks. The adaptive use of these two types of encoders resulted in performance gains over the original MMP algorithm, further increasing the performance advantage over the current state-of-the-art image encoders for scanned compound images, without compromising the performance for other image types.

Resumo Limpo

paper propos new encod scan compound document base upon recent introduc code paradigm call multidimension multiscal parser mmp mmp use approxim pattern match adapt multiscal dictionari contain concaten scale version previous encod imag block featur give mmp abil adjust input imag characterist result high code effici wide rang imag type versatil make mmp good candid compound digit document encod propos algorithm first classifi imag block smooth textur nonsmooth text graphic smooth nonsmooth block compress use differ mmpbase encod adapt encod either type block adapt use two type encod result perform gain origin mmp algorithm increas perform advantag current stateoftheart imag encod scan compound imag without compromis perform imag type

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