Xiao Yang Enmin Song Guangzhi Ma Wanyu Qiu Jia Guo Image Grayscale Enhancement through Frame Accumulation with Shaped-Function Signal. SMC 2025 5612-5617 conf/smc/2025 https://doi.org/10.1109/SMC58881.2025.11343533 db/conf/smc/smc2025.html#YangSMQG25 streams/conf/smc