In this study an auto-block coding method was proposed. This method regulates the number of quantization levels in each block automatically according to its characteristics. The method uses the mean quantified level quantification, two-level quantification and four-level quantification integrated multi-level approach to quantify the image coding image. It can recover the detail information of the image accurately and improve the quality of decoding image. This study introduces the principle of the auto-block coding method in detail and compare with two-level block coding method. Experimental results with MATLAB? are provided to demonstrate the effectiveness of the proposed method.
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