Study on image data compression by using neural network

Zhong Zheng; Masayuki Nakajima; Takeshi Agui

doi:10.1117/12.131414

1 November 1992 Study on image data compression by using neural network

Zhong Zheng, Masayuki Nakajima, Takeshi Agui

Proceedings Volume 1818, Visual Communications and Image Processing '92; (1992) https://doi.org/10.1117/12.131414
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

Properties of the neural networks employed in image data compression are studied, and a method for increasing the compression capability is proposed. Since the multiple gray level image have a large quantity of data, the poor mapping capacity of the neural network is the main problem causing the poor data compression capability. In order to increase the compression capability, in the proposed method, first an image is divided into subimages, that is blocks. Then these blocks are divided into several classes. Several independent neural networks are assigned adaptively to these blocks according to their classes. Since the mapping capacity is proportional to the number of the neural networks, and no data quantity increases, the compression capability is increased efficiently by our method. The computer simulation results show that the signal to noise ratio (SNR) of the reconstructed images was increased by about 1 approximately 2 (dB) by our method. Especially the visual image quality has increased.

Citation Download Citation

Zhong Zheng, Masayuki Nakajima, and Takeshi Agui "Study on image data compression by using neural network", Proc. SPIE 1818, Visual Communications and Image Processing '92, (1 November 1992); https://doi.org/10.1117/12.131414

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