A Novel Approach to Sparse Histogram Image Lossless Compression using JPEG2000

نویسندگان

  • Marco Aguzzi
  • Maria Grazia Albanesi
چکیده

In this paper a novel approach to the compression of sparse histogram images is proposed. First, we define a sparsity index which gives hints on the relationship between the mathematical concept of matrix sparsity and the visual information of pixel distribution. We use this index to better understand the scope of our approach and its preferred field of applicability, and to evaluate the performance. We present two algorithms which modify one of the coding steps of the JPEG2000 standard for lossless image compression. A theoretical study of the gain referring to the standard is given. Experimental results on well standardized images of the literature confirm the expectations, especially for high sparse images.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Compressing High Bit Depth Images of Sparse Histograms

To improve the lossless compression ratios for images having sparse histograms, a method of histogram packing was introduced. The method was found to be effective for low bit depth images. We investigate effects of packing histograms of high bit depth images—medical CR, CT, and MR images as well as various natural 16-bit ones. We analyze an off-line packing method, which requires encoding the o...

متن کامل

Compressing Images of Sparse Histograms

Most single-frame single-band medical images, like CR, CT, and MR, are of a high nominal bit depth, which usually varies from 12 to 16 bits per pixel. The actual number of pixels' intensity levels found in those images may be smaller, than implied by the nominal bit depth, by an order of magnitude or even more. Furthermore, levels are distributed throughout almost all the entire nominal intensi...

متن کامل

Performance evaluation of lossless medical and natural continuous tone image compression algorithms

In this study we evaluate the performance of several lossless grayscale image compression algorithms: algorithms that are standards in medical image transmitting and archiving systems, other algorithms used for compressing medical images in practice and in image compression research, and of a couple of universal algorithms applied to raw and preprocessed image data. In the experiments we use a ...

متن کامل

L−Infinity Progressive Image Compression

Abstract : This paper presents a lossless image coding approach that produces an embedded bit−stream optimized for L−infinity−constrained decoding. The decoder is implementable using only integer arithmetic and is able to deduce from the bit−stream the L−infinity error that affects the reconstructed image at an arbitrary point of decoding. The lossless coding performance is compared with JPEG−L...

متن کامل

A Novel Color Image Compression Method Using Eigenimages

Since the birth of multi–spectral imaging techniques, there has been a tendency to consider and process this new type of data as a set of parallel gray–scale images, instead of an ensemble of an n–D realization. Although, even now, some researchers make the same assumption, it is proved that using vector geometries leads to better results. In this paper, first a method is prop...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009