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A Heuristic Algorithm for Arbitrary-criterion Optimization of Quantization Scales

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Abstract

The paper considers the generation of effective quantization scales which meet any quality criteria under any constrains. The analysis of work of available methods allows a concept of a heuristic iterative algorithm for generating near-optimal quantization scales. The concept uses a uniform scale as an initial approach followed by an iterative target-criterion-optimizing recalculation of quantization interval boundaries with adhering to the constrains at each iteration. The formal description of the algorithm is presented. The software implementation of the algorithm is incorporated into the hierarchical image-compression method. The numerical experiments are carried out to test the efficiency of the algorithm and substantiate the convergence of the algorithm to the best solution.

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Funding

The work was partly funded by RFBR according to the research project 19-29-09045 (in parts 1–5), and the RF Ministry of Science and Higher Education within the state project of FSRC “Crystallography and Photonics” RAS (in part “Introduction”).

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Correspondence to M. V. Gashnikov.

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Gashnikov, M.V. A Heuristic Algorithm for Arbitrary-criterion Optimization of Quantization Scales. Opt. Mem. Neural Networks 30, 140–145 (2021). https://doi.org/10.3103/S1060992X21020089

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  • DOI: https://doi.org/10.3103/S1060992X21020089

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