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Development and evaluation of a novel lossless image compression method (AIC: artificial intelligence compression method) using neural networks as artificial intelligence

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Abstract

Purpose

This study was aimed to validate the performance of a novel image compression method using a neural network to achieve a lossless compression. The encoding consists of the following blocks: a prediction block; a residual data calculation block; a transformation and quantization block; an organization and modification block; and an entropy encoding block. The predicted image is divided into four macro-blocks using the original image for teaching; and then redivided into sixteen sub-blocks. The predicted image is compared to the original image to create the residual image. The spatial and frequency data of the residual image are compared and transformed.

Materials and methods

Chest radiography, computed tomography (CT), magnetic resonance imaging, positron emission tomography, radioisotope mammography, ultrasonography, and digital subtraction angiography images were compressed using the AIC lossless compression method; and the compression rates were calculated.

Results

The compression rates were around 15:1 for chest radiography and mammography, 12:1 for CT, and around 6:1 for other images. This method thus enables greater lossless compression than the conventional methods.

Conclusion

This novel method should improve the efficiency of handling of the increasing volume of medical imaging data.

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Author information

Authors and Affiliations

  1. Department of Radiology, Nagoya University Hospital, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan

    Hiroshi Fukatsu

  2. Department of Radiology, Nagoya University Post Graduate School, Nagoya, Japan

    Shinji Naganawa

  3. Image Intech Corporation, Tokyo, Japan

    Shinnichiro Yumura

Authors
  1. Hiroshi Fukatsu
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  2. Shinji Naganawa
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  3. Shinnichiro Yumura
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Corresponding author

Correspondence to Hiroshi Fukatsu.

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Fukatsu, H., Naganawa, S. & Yumura, S. Development and evaluation of a novel lossless image compression method (AIC: artificial intelligence compression method) using neural networks as artificial intelligence. Radiat Med 26, 120–128 (2008). https://doi.org/10.1007/s11604-007-0205-8

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  • DOI: https://doi.org/10.1007/s11604-007-0205-8

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