- 期刊
- OpenAccess
A Nearly Optimum Generalized Multilevel Block Truncation Coding Algorithm with a Fast Nonexhaustive Search Based on a Mean Square Error Criterion
並列摘要
Block Truncation Coding (BTC), using a one-bit moment preserving quantizer to quantize a block, is a simple compression method; however, compression with BTC cannot be used to obtain a sufficiently high quality image, especially an image with many edges. In this paper, a new generalized multilevel BTC algorithm, which arbitrarily specifies the number of quantization levels, is developed. In the proposed algorithm, a nearly optimum quantizer is proposed based on a multiplication-free and non- exhaustive search such that the computational complexity is very low. The simulation results indicate that both the computational complexity and the reconstructed image quality obtained using the proposed multilevel BTC algorithm are better than those obtainable with other existing multilevel BTC algorithms.
延伸閱讀
- Li, Z., Wang, Y., Tan, F., Wan, X., & Nie, T. (2012). The Solution of a Class of Singularly Perturbed Two-Point Boundary Value Problems by the Iterative Reproducing Kernel Method. Abstract and Applied Analysis, 2012(), 2032-2038-818. https://doi.org/10.1155/2012/984057
- Lee, H. Y. (2017). Inference on Constant Stress Accelerated Life Tests under Log-Location-Scale Lifetime Distributions with Type-I Hybrid Censoring [master's thesis, Tamkang University]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0002-2507201715272800
- Yu, Y. R., & Sheng, D. (2012). On the Strong Convergence of an Algorithm about Firmly Pseudo-Demicontractive Mappings for the Split Common Fixed-Point Problem. Journal of Applied Mathematics, 2012(), 685-693-141. https://doi.org/10.1155/2012/256930
- 宋秉恩（2011）。A Reversible Information Hiding Scheme by Applying Difference Expansion and Median Edge Detector on Block Truncation Coding〔碩士論文，亞洲大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0118-1511201215471709
- Li, Z. (2013). Existence of Multiple Positive Periodic Solutions to Two Species Parasitical Model with Impulsive Effects and Harvesting Terms. Discrete Dynamics in Nature and Society, 2013(), 346-354-039. https://doi.org/10.1155/2013/198927