20.500.12556/RUL-135536 A hybrid radix-4 and approximate logarithmic multiplier for energy efficient image processing Multiplication is an essential image processing operation commonly implemented in hardware DSP cores. To improve DSP cores’ area, speed, or energy efficiency, we can approximate multiplication. We present an approximate multiplier that generates two partial products using hybrid radix-4 and logarithmic encoding of the input operands. It uses the exact radix-4 encoding to generate the partial product from the three most significant bits and the logarithmic approximation with mantissa trimming to approximate the partial product from the remaining least-significant bits. The proposed multiplier fills the gap between highly accurate approximate non-logarithmic multipliers with a complex design and less accurate approximate logarithmic multipliers with a more straightforward design. We evaluated the multiplier’s efficiency in terms of error, energy (power-delay-product) and area utilisation using NanGate 45 nm. The experimental results show that the proposed multiplier exhibits good area utilisation and energy consumption and behaves well in image processing applications. approximate multiplier approximate computing arithmetic circuit design hybrid encoding radix-4 encoding logarithmic encoding energy-efficient processing aproksimativni množilnik aproksimativno računalništvo načrtovanje aritmetičnih vezij hibridno kodiranje radix-4 kodiranje logaritemsko kodiranje energijsko učinkovito računanje true false true Angleški jezik Slovenski jezik Članek v reviji 2022-03-17 15:37:51 2022-03-17 15:37:52 2022-09-14 04:13:52 0000-00-00 00:00:00 2021 0 0 20 str. iss. 10, art. 1175 Vol. 10 May 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004 2079-9292 10.3390/electronics10101175 63386371 RAZ_Lotric_Uros_2021.pdf RAZ_Lotric_Uros_2021.pdf 1 7F1C9156F408AC721BBACFF2CC85874F ff82f829ab4eb51422bedd47691fb0729199c99b682b1b53b2077d838ffb8d47 1722a242-a600-11ec-8556-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154662 https://www.mdpi.com/2079-9292/10/10/1175 1 d15816db-a5ff-11ec-8556-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154661 Fakulteta za računalništvo in informatiko 0 0 0