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The Journal of Semiconductor Technology and Science (JSTS) is an international, peer-reviewed, and open-access journal that is published bimonthly.
- Scope: semiconductor processes, devices, circuits, and MEMS.
- Editor-in-Chief: Prof. Woo Young Choi (ECE, Seoul National University)
- Indexed within Science Citation Index Expanded (SCIE), SCOPUS, Korea Citation Index (KCI), and other databases.

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Title Image Lookup Table Compression Using Scaled Partitioning with Memory Data Compression
Authors (Jeonghun Lee) ; (Sanghyun Lim) ; (Seongjo Youn) ; (Jaehee You)
DOI https://doi.org/10.5573/JSTS.2026.26.1.36
Page pp.36-48
ISSN 1598-1657
Keywords LUT compression; LUT input pixel partitioning; error LUT; image data compression; ROM count
Abstract Methodologies to reduce LUT ROM amount are proposed using input pixel partitioning. To minimize the amount of error in the LUT, a scale factor is used to correct the LUT output values for the partitioned inputs, based on the input values. The dynamic range of lower bit group computation is optimized according to the step size of the upper partitioned bit group computation by the scale factor. A LUT computation and hardware design methodologies are presented utilizing image memory compression. 23.4% of the LUT ROM count is reduced for Kodak image dataset without image quality degradation in histogram equalization for verifications using the presented LUT design methods. According to the image memory compression rate, LUT computation and memory access rate can be significantly reduced.