The design of approximate adders has been widely researched to advance energy-efficient hardware for computation-intensive multimedia applications, such as image, audio, or video processing. The design of approximate adders has been widely researched to advance energy-efficient hardware for computation intensive multimedia applications, such as image/audio/video processing. Several static and dynamic approximate adders exist in the literature, each of which endeavors to balance the conflicting demands of high performance, computational accuracy, and energy efficiency. This work introduces a novel approximate adder that is more energy- and area-efficient than existing adders, while achieving improved or comparable accuracy, as demonstrated by simulation results. The proposed adder's ability to digitally reconstruct high quality images is further demonstrated by the deployment of the design for an image processing task.

翻译：近似加法器的设计已被广泛研究，旨在为计算密集型多媒体应用（如图像、音频或视频处理）推进高能效硬件的发展。文献中已存在多种静态与动态近似加法器，每一种都致力于在性能、计算精度和能量效率这些相互冲突的需求之间取得平衡。本文提出了一种新型近似加法器，其能量效率和面积效率均优于现有加法器，同时实现了提升或相当的精度，仿真结果证实了这一点。通过将该设计部署于一项图像处理任务，进一步证明了所提加法器能够以数字方式高质量重建图像。